Compass Limited Rear Drive Module issue - Jeep Compass Forum
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post #1 of 51 Old 02-17-2018, 03:13 PM Thread Starter
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Compass Limited Rear Drive Module issue

My wife purchased an 2014 jeep Cherokee Limited and to date we have had no issues. The same year I purchased a Honda Civic Ex and also had zero issues. After seeing the new 2018 Jeep Compass one evening at our local dealer I decided to trade in my Civic for the a new Compass Limited because I wanted a 4x4 for the winters here in eastern Pa.

All seemed good with my jeep until around 300 miles when this strange groaning noise and vibration appeared around 30 to 35 miles an hour coming from the rear of the vehicle. There was also a single knocking sound when decelerating from speeds over 40 mph. I contacted the dealer where we purchased it from and they scheduled an appointment. The service tech took the Compass for a test drive and stated that he could not duplicate the noise so the service manager asked me to go for a drive with the tech. We went about about one mile up the road when the groaning noise appeared and the tech threw the auto shift lever into manual mode and the noise stopped instantly. He told me to head back to the dealership as he now knew what the issue was. He told me the Rear Drive Modual needed to be replaced. The service manager stated they needed to order the part and would call when it arrived at the dealer. The following week Monday, the dealership called and said my part was in and asked if I could drop it off and they provided me a loaner vehicle. Two days later I had my Compass back and all seemed good again until around 200 miles later when the same noise appeared. This was very upsetting to say the least but I know things happen! Another issue started, after washing the Compass the side monitoring lights would come on and stay on. Called the dealer and told them about the noise issue again and also the side monitoring light issue. They scheduled an appointment and two trips back to the dealer still having the same issues. We decided to open a claim with Jeep resolution Department. Our claim was assigned to Dana who called me the next morning and assured me she had the resources and technicians to fix my vehicle. We were given a case # and told she would keep us informed as to what she found after calling our service dept. Dana called back two days later and said the service manager stated to her they replaced the Rear Drive Module and checked the connections for the blind spot sensors. He noted to her that some connections to the sensors were resealed and they were unable to figure out what the issue was. He also stated to her that there was no fix for the Rear Drive Modual issue and would need to have a tech sent down to check things over to determine what was causing both issues. Dana then proceeded to tell me on the phone just to turn up the volume on my radio so the noise was muffled??? Really..turn up the radio??? I flipped and she quickly ended the call. I called her back the next day left a message and no return call from her. I called the dealer back several times to find out when this so called special tech was going to look at our Jeep and the service manager would not return my two messages. Really?? Go figure! Now I'm getting extremely.. p***ed off.

So now at 4000 miles and same issues. Two weeks ago we contacted another dealer and they scheduled an appointment for the issues with the groaning and vibration from the Drive Module. They stated to us that this problem was well known but a fix to the issue was not available. Our jeep was dropped off 2/12 and two days later the dealer called and said that our Jeep was ready to be picked up. They told me that they addressed an airbag recall issue and replaced the Rear Drive Modual but sadly the noise was still present when they test drove it. They stated to me that they spoke with a Chrysler representative who stated that they are waiting for a software update that should resolve the issues with the rear drive module noise. I was also told that the Drive Module that was replaced had metal shavings in it which was disheartening to find. No issue was found with the blind spot monitoring light issue we are having. Advised us to see when it happens to possibly find the issue. So we now know that the 2018 jeep Compass has a Rear Drive Module issue that the dealers and Jeep are aware of. Our issues are currently ongoing with no resolve. I love my Compass but we may need to pursue a full buy back from Jeep for a new vehicle. This is completely unacceptable from a new vehicle costing $34,000.
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post #2 of 51 Old 02-17-2018, 03:38 PM
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I, like many, have the CLUNK around 38 MPH. It is the AWD kicking in when the temps are around 40 or below. Do me a favor, go drive the routes you normally do and where you hear the noise. Then, LOCK the AWD and do it again. The clunk should go away. I've just come to expect it. Lets me know its working . As for a grinding noise, I have no such thing. No signs of leaking anywhere under the Jeep either, as I just did an oil change and full inspection last weekend. My Trailhawk Cherokee always had something leaking by this point (9,000 miles).

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post #3 of 51 Old 02-17-2018, 10:21 PM
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This is even more disheartening - on top of the electrical gremlins we're STILL experiencing (haven't even had the car a day and it's throwing ESS error lights at me), its sounding like the 35-40 mph rear groaning is a serious issue. I'm in the process of lawyering up.

FCA insisted that the electrical issues weren't temperature related, but lo and behold, the errors came back the moment the temperatures dropped below freezing.

Oh - funny that you got Dana. She was assigned to me too. Didn't hear from her all week (Even though she said she'd be in touch MONDAY). Another rep eventually reached out after I blasted Jeep on Twitter.
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post #4 of 51 Old 02-19-2018, 01:29 PM
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Yeah you would think that someone at FCA would send out a memo telling people to never say things like "turn up the radio", "they all do that", "it was fine when we drove it" and so on. That is just so classic Chrysler. At least they aren't actually blaming the customer as they used to also do. Could be an amazing company if they just stopped being ****ing *******s. And fire Sergio, of course.
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post #5 of 51 Old 02-19-2018, 01:41 PM
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Originally Posted by Mudman1 View Post
I, like many, have the CLUNK around 38 MPH. It is the AWD kicking in when the temps are around 40 or below. Do me a favor, go drive the routes you normally do and where you hear the noise. Then, LOCK the AWD and do it again. The clunk should go away. I've just come to expect it. Lets me know its working . As for a grinding noise, I have no such thing. No signs of leaking anywhere under the Jeep either, as I just did an oil change and full inspection last weekend. My Trailhawk Cherokee always had something leaking by this point (9,000 miles).
Simplest explanation for the clunk is just excessive backlash. Fixable I expect. My 2014 makes absolutely no noise going in or out of 4wd. Just to emphasize the point, I'm super sensitive to mechanical equipment and many times I've picked up impending failures on equipment long before the electronic monitoring or NDT inspections showed anything. It definitely makes no noise.
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post #6 of 51 Old 02-19-2018, 03:41 PM
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Mine does the clunk at 38 MPH when decelerating in the cold, AFAIK they all do because we have discussed this before in other threads here and the consensus is that it is a normal operating noise.

I hear mine doing it in the cold but I don't really care, or worry about it at all. To me, its simply the sounds and process of the rear axle being hooked up after being in 2WD at highway speed for some time. The rear driveshaft has electrically controlled disconnects at both the front and the back, as you slow down from highway speed the front disconnect re-engages and gets the driveshaft up to speed but the rear is still disconnected, it is at this point that you will hear the humming sound if the differential oil is cold. As you slow down further and cross the 38 MPH threshold the rear disconnect engages and hooks up the spinning driveshaft to the spinning differential. It is not unusual that there would be a small audible clunk as this engagement happens, these two parts are spinning fairly fast and have to lock into each-other at speed.

To me these sounds are not concerning at all. The vehicle is designed to operate as an AWD at low speeds and disconnect the driveshaft/rear end at highway speeds to be more fuel efficient. It has to re-connect the spinning parts when you drop down to low speeds again to go back into AWD and there is no surprise that a small amount of noise is associated with those actions. In my experience, it is nearly unnoticeable when the differential oil is warm. Possibly switching to a really high-end full-synthetic gear oil back there would keep the noise down a bit in the winter. If you really don't want to hear it when its cold out pop the 4WD button and the rear end will stay engaged, its not like it will really make a meaningful difference in fuel economy to most of us in an average commute unless you are driving at least 50 miles on the interstate steady.

I'm surprised the dealership even accepted it from you as an issue. Its a part-time AWD system in a borderline-economy vehicle, there can be some noise as it goes in and out of 2WD and thats fine, its not hurting anything. The vehicle has not failed or wound up stranded on the side of the road with an exploded differential. They've replaced what was probably a perfectly good rear end two or three times now because both you and the dealer think that metal gears spinning at high speed in cold oil should mesh silently?
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post #7 of 51 Old 02-19-2018, 06:50 PM Thread Starter
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Mine does the clunk at 38 MPH when decelerating in the cold, AFAIK they all do because we have discussed this before in other threads here and the consensus is that it is a normal operating noise.

I hear mine doing it in the cold but I don't really care, or worry about it at all. To me, its simply the sounds and process of the rear axle being hooked up after being in 2WD at highway speed for some time. The rear driveshaft has electrically controlled disconnects at both the front and the back, as you slow down from highway speed the front disconnect re-engages and gets the driveshaft up to speed but the rear is still disconnected, it is at this point that you will hear the humming sound if the differential oil is cold. As you slow down further and cross the 38 MPH threshold the rear disconnect engages and hooks up the spinning driveshaft to the spinning differential. It is not unusual that there would be a small audible clunk as this engagement happens, these two parts are spinning fairly fast and have to lock into each-other at speed.

To me these sounds are not concerning at all. The vehicle is designed to operate as an AWD at low speeds and disconnect the driveshaft/rear end at highway speeds to be more fuel efficient. It has to re-connect the spinning parts when you drop down to low speeds again to go back into AWD and there is no surprise that a small amount of noise is associated with those actions. In my experience, it is nearly unnoticeable when the differential oil is warm. Possibly switching to a really high-end full-synthetic gear oil back there would keep the noise down a bit in the winter. If you really don't want to hear it when its cold out pop the 4WD button and the rear end will stay engaged, its not like it will really make a meaningful difference in fuel economy to most of us in an average commute unless you are driving at least 50 miles on the interstate steady.

I'm surprised the dealership even accepted it from you as an issue. Its a part-time AWD system in a borderline-economy vehicle, there can be some noise as it goes in and out of 2WD and thats fine, its not hurting anything. The vehicle has not failed or wound up stranded on the side of the road with an exploded differential. They've replaced what was probably a perfectly good rear end two or three times now because both you and the dealer think that metal gears spinning at high speed in cold oil should mesh silently? [IMG class=inlineimg]http://www.myjeepcompass.com/forums/images/smilies/New/dunno.gif[/IMG]
If you read my post you would have known it was a load groaning noise from a defective rear drive module. Not just the loud clunking heard while decelerating from speeds. Read the whole post before offering your own personal response.
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post #8 of 51 Old 02-19-2018, 10:25 PM
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I did read the whole post, but without any video or audio from you we don't have much to go on here except our own personal experiences with our Compasses. From what I understand, another perfectly normal low humming noise that commonly happens while cruising at medium speeds happens when the Multi-air II system is doing its internal EGR thing, that would be difficult to confuse with rear-end noise though I'm sure. At any rate, there are some normal humms, groans, and clunks that are typical of this vehicle and without hearing yours we don't know anything for sure but if it hasn't exploded and left you stranded on the side of the road then there is no proof yet that anything is or was ever truly wrong with your particular vehicle. If the dealer decides to go ahead with some warranty work they are going to say "oh yes it was blah blah blah blah blah" because for them if it turns out nothing was ever wrong then they don't get paid from FCA for the work they've done.
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post #9 of 51 Old 02-20-2018, 02:36 PM
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Originally Posted by Ricksabdl View Post
My wife purchased an 2014 jeep Cherokee Limited and to date we have had no issues. The same year I purchased a Honda Civic Ex and also had zero issues. After seeing the new 2018 Jeep Compass one evening at our local dealer I decided to trade in my Civic for the a new Compass Limited because I wanted a 4x4 for the winters here in eastern Pa.

All seemed good with my jeep until around 300 miles when this strange groaning noise and vibration appeared around 30 to 35 miles an hour coming from the rear of the vehicle. There was also a single knocking sound when decelerating from speeds over 40 mph. I contacted the dealer where we purchased it from and they scheduled an appointment. The service tech took the Compass for a test drive and stated that he could not duplicate the noise so the service manager asked me to go for a drive with the tech. We went about about one mile up the road when the groaning noise appeared and the tech threw the auto shift lever into manual mode and the noise stopped instantly. He told me to head back to the dealership as he now knew what the issue was. He told me the Rear Drive Modual needed to be replaced. The service manager stated they needed to order the part and would call when it arrived at the dealer. The following week Monday, the dealership called and said my part was in and asked if I could drop it off and they provided me a loaner vehicle. Two days later I had my Compass back and all seemed good again until around 200 miles later when the same noise appeared. This was very upsetting to say the least but I know things happen! Another issue started, after washing the Compass the side monitoring lights would come on and stay on. Called the dealer and told them about the noise issue again and also the side monitoring light issue. They scheduled an appointment and two trips back to the dealer still having the same issues. We decided to open a claim with Jeep resolution Department. Our claim was assigned to Dana who called me the next morning and assured me she had the resources and technicians to fix my vehicle. We were given a case # and told she would keep us informed as to what she found after calling our service dept. Dana called back two days later and said the service manager stated to her they replaced the Rear Drive Module and checked the connections for the blind spot sensors. He noted to her that some connections to the sensors were resealed and they were unable to figure out what the issue was. He also stated to her that there was no fix for the Rear Drive Modual issue and would need to have a tech sent down to check things over to determine what was causing both issues. Dana then proceeded to tell me on the phone just to turn up the volume on my radio so the noise was muffled??? Really..turn up the radio??? I flipped and she quickly ended the call. I called her back the next day left a message and no return call from her. I called the dealer back several times to find out when this so called special tech was going to look at our Jeep and the service manager would not return my two messages. Really?? Go figure! Now I'm getting extremely.. p***ed off.

So now at 4000 miles and same issues. Two weeks ago we contacted another dealer and they scheduled an appointment for the issues with the groaning and vibration from the Drive Module. They stated to us that this problem was well known but a fix to the issue was not available. Our jeep was dropped off 2/12 and two days later the dealer called and said that our Jeep was ready to be picked up. They told me that they addressed an airbag recall issue and replaced the Rear Drive Modual but sadly the noise was still present when they test drove it. They stated to me that they spoke with a Chrysler representative who stated that they are waiting for a software update that should resolve the issues with the rear drive module noise. I was also told that the Drive Module that was replaced had metal shavings in it which was disheartening to find. No issue was found with the blind spot monitoring light issue we are having. Advised us to see when it happens to possibly find the issue. So we now know that the 2018 jeep Compass has a Rear Drive Module issue that the dealers and Jeep are aware of. Our issues are currently ongoing with no resolve. I love my Compass but we may need to pursue a full buy back from Jeep for a new vehicle. This is completely unacceptable from a new vehicle costing $34,000.
Hello Ricksabdl,
We would like to extend our sincerest apologies, as we understand your desires to have this addressed. We recognize how this could be frustrating and would like to look into your situation further. Please send us a private message with your VIN.
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post #10 of 51 Old 03-04-2018, 10:22 PM Thread Starter
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Hi Julie, I tried to send you a private message but your inbox was full. Do you have an email address to get the vin# to you?
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post #11 of 51 Old 03-05-2018, 03:19 PM
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Hi Julie, I tried to send you a private message but your inbox was full. Do you have an email address to get the vin# to you?
We have freed up some space in out inbox, Ricksabdl. Please feel free to send us a PM at anytime.
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post #12 of 51 Old 03-07-2018, 09:43 PM
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Rick, I've experience this issue with 2017 Jeep Compass I own and from what I've read in the Renegade forums, it's quite common on FCA 9 Speed engines. Mine happens around 35mph and makes a noise like if you are riding treads. The noise isn't there when the weather is AWD capable, under 40, but anything above 40, the sound is there. I haven't taken it to my dealership since there hasn't been a day over 40 here in Northern Nevada to replicate the sound. I noticed it a few days in Jan when we randomly hit 60, but since then, it hasn't been present. I've read on multiple forums that FCA is working on a software fix, but nothing as of yet. Let me know if anything comes of your issue.
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post #13 of 51 Old 03-10-2018, 01:17 AM Thread Starter
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Julio, I sent Julie from jeep cares on here two messages and she replied to the first message and then I did not hear back from my second message to her. Not sure what to think about this whole ordeal.
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post #14 of 51 Old 03-14-2018, 10:40 PM
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I'm in the same boat as you. I've contacted Jeep and they are aware of the issue, but they have no time frame on the fix. Although it is a simple frustration with the noise, I find it hard to believe that a fix is not available. They've had issues with the Renegade 9 Speed engines for two years now with that same noise. It's a similar engine in the compass. I truly hope that they find a solution to the vehicle, otherwise I'll weigh my options.
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post #15 of 51 Old 03-15-2018, 03:55 PM
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Originally Posted by Julio Villegas
they have no time frame on the fix
Probably because nothing is actually broken stop being so paranoid, its a simple low-cost part-time AWD system that makes a little noise in certain circumstances. Nothing is broken, nobody has been stranded on the side of the road from this.

You guys would have HATED having a four wheel drive vehicle from the mid-nineties or earlier, some models could only be put in 4x4 at a stop and they almost always had a front-end growl or humm once engaged. Worked just fine though, and people knew the noise was normal.

Is anybody ever going to record a video of this alleged problem? Then at least we would know if the normal operating noises I hear are the same ones you guys are referring to. Its not impossible that something is wrong with your particular vehicle but without actually hearing it we can only guess our cars are doing the same thing.
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post #16 of 51 Old 03-15-2018, 07:05 PM Thread Starter
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Listen up! If you choose to spend your hard earned money on something that is not operating as designed that's your problem. I myself am not the kind of person that rolls over and accepts what I've been told as an acceptable answer because someone who has no clue of what the issue is with the vehicle is gives me a line of BS!! So for the last time keep "your" opions to yourself. No one cares what you think.
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post #17 of 51 Old 03-16-2018, 04:19 PM
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Listen up! If you choose to spend your hard earned money on something that is not operating as designed that's your problem. I myself am not the kind of person that rolls over and accepts what I've been told as an acceptable answer because someone who has no clue of what the issue is with the vehicle is gives me a line of BS!! So for the last time keep "your" opions to yourself. No one cares what you think.
I don't have much input in this thread, the noise is not something I have noticed, but I don't really have an ear for that. But besides getting angry at some random person on forum which just plainly isn't a healthy thing, I should note that the point he was making and your complaint is that you have assumed that it is not operating as designed. It may not be working as you expect it, it may not be running as you demand it, it may in fact be not running as designed and you should look as you are into a solution. But just because you have assumed that it is not running as designed doesn't mean that is the case.
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post #18 of 51 Old 03-16-2018, 06:02 PM Thread Starter
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I don't have much input in this thread, the noise is not something I have noticed, but I don't really have an ear for that. But besides getting angry at some random person on forum which just plainly isn't a healthy thing, I should note that the point he was making and your complaint is that you have assumed that it is not operating as designed. It may not be working as you expect it, it may not be running as you demand it, it may in fact be not running as designed and you should look as you are into a solution. But just because you have assumed that it is not running as designed doesn't mean that is the case.

Really?? Read the original thread before commenting. What part of noboby cares about your personal Non professional opinion don't you understand??? Random comments regarding nonsense and personal opinions mean absolutely nothing to me so keep them to yourself!! If your having an issue with your personal vehicle and choose to do nothing about it thst's your problem and your money to piss away not mine. I'm not here telling you to just deal with it.
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post #19 of 51 Old 03-16-2018, 08:36 PM
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Uggh, calm down, I know my posts are sometimes worded strongly and come off as condescending but believe it or not I don't want to piss people off. I just have a natural reaction thats hard to control when people come on and post

"blah blah my car makes a noise and I don't know what it is and even though it drives 100% fine and has not broken or left me stranded I'm convinced it has some problem! "

I just want to see proof that there is actually an issue. Thats all. A bit of humming and a clunk from the front or rear driveshaft disconnect is not an issue as far as I know. The reason you didn't experience it right off the bat is probably because it wasn't cold enough when you bought it in the late summer or end of fall but then it got cold it started doing its winter mode stuff. We don't have a ton of concrete information since FCA is rather tight-lipped about the programming of their vehicles but we DO have the aggregate data from bunches of forum members here and with our cousins the Renegade and some of the Cherokee models with the same engine and transmission, seems like tons of people in cold winter states report observing this sound and as of yet nobody has seen any actual issue as a result.

At this point, we aren't going to get anything real useful from you it seems. You don't seem to want to make a video or do any diagnostics yourself, you pretty much just want to b**** and moan about it so ... we can't help you. But we can still post here so that some other person who buys a Compass and hears the noise in the winter and gets curious doesn't get needlessly freaked out when he or she googles around and finds your thread here. When there is proof that there is an issue, then we will have something to talk about. In the meantime, I reserve the right to post critically of alleged issues on a vehicle that has not actually broken down or malfunctioned in any way.

We have every right to post here so sorry to piss you off but you don't get to decide who can post and who can't. I realize I'm not doing the best job of reassuring you that your car is fine (I swear thats all I meant to do) but I don't get paid for sharing my knowledge and opinions so too bad, so sad, this is what you get buddy. Now you are too mad to even give the idea a fair consideration (that your car could be fine). And the dealership is probably willing to soothe your ego and say "oh yes there is something wrong" because they get paid from FCA to work on it so its money for them, and if they get halfway into the job and realize "oh crap, its not actually broken" they are not going to want to admit that because then FCA will not pay them for the work, and obviously neither will you, so they lose and they don't like that. They will label perfectly functioning parts as "broken" and replace them all day long to keep the warranty money rolling in and the customer placated. I'm just sitting back wondering what they are going to tell you after the third round of major service happens and it still works exactly the same...

Anyways, again, I do not mean to insult your intelligence or make you upset. I try not to write abrasively but sometimes it happens. I don't have all day to sugar coat things and it doesn't come naturally to me. But I hope if the dealer replaces yet another part and the same sound continues you will at least think about how many thousands of these are driving around every day, many people reporting the curious sound but essentially none of them have left anyone stranded as far as we can tell and they probably won't based on the track record of the Renegades with nearly exactly the same drivetrain so... give it a chance.

If or when your Compass actually blows out a differential or the PTU unit and leaves you stuck on the side of the road, feel free to come back here and scream and holler at me all you want. I'll apologize then. In the meantime try to keep that blood pressure down and enjoy your (probably perfectly fine) Compass
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post #20 of 51 Old 03-16-2018, 10:01 PM
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Here is what I see and feel the clunk at around 35-40 MPH in cold weather is pretty much normal but noise from the rear PTU is something I would be concerned with especially since the dealer has made the comment that it is a known issue and a software fix is supposedly in the works. This says they know there is an issue with at least some number of vehicles. Then the fact the dealer found and was concerned about metal shavings in the unit. This means very likely whatever software issue going on may be damaging the unit. This issue is a big deal and if it were mine I would be getting pretty angry as well.

Yes often 4x4 vehicles make all kinds of weird sounds and it gets worse with AWD or automatic 4wd systems. However there are sounds and issues that fall out of the norm. When this happens it needs to be dealt with as it is very possible damage may be being done.

If I were you Ricksabdl I would be holding onto every piece of documentation you get. I would be on the phone with a Jeep caseworker and expressing your concern that this issue may still exist with your Jeep after your warranty is over and if they plan on extending your warranty at least with this issue until it is fully resolved. They should also replace your PTU when and if the software fix is done as since one PTU showed damage from this issue there is no reason to think the new PTU has also not been damaged and be a issue later down the road.


If you don't get the answers you're looking for I would start looking into your states lemon law. Search out others with this so called well known issue and getting statements from them may help. If you can't find a lot of people with a Jeep Compass or Renegade with this issue that goes a long ways towards saying your Jeep was broken right out the gate. Personally if I were Jeep I would be considering vehicle replacement if they cannot guarantee a fix in a reasonable time frame.

How a company stands behind their product says a lot about them and leaving someone hanging with a faulty product will have an impact on their sales. FCA does have a lot of negative press at the moment though I feel it is not earned they still need to show they will stand behind their vehicles more than ever right now.
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post #21 of 51 Old 03-17-2018, 03:48 PM
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I am glad that I found this thread. It looks like, that this issue made it over to Germany too. Had may car already at the dealership to check the transmission with no result, the noise is still there. Now I was able to advise the dealership to look at the 4 WD system. Our European uConnect 8.4 has an app called Jeep Skills, it shows a real-time graphic of the drive train. This grinding noise comes right at the point, when the rear axle kicks in.

Thank you guys for this useful thread!

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post #22 of 51 Old 03-17-2018, 03:57 PM Thread Starter
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Here is what I see and feel the clunk at around 35-40 MPH in cold weather is pretty much normal but noise from the rear PTU is something I would be concerned with especially since the dealer has made the comment that it is a known issue and a software fix is supposedly in the works. This says they know there is an issue with at least some number of vehicles. Then the fact the dealer found and was concerned about metal shavings in the unit. This means very likely whatever software issue going on may be damaging the unit. This issue is a big deal and if it were mine I would be getting pretty angry as well.

Yes often 4x4 vehicles make all kinds of weird sounds and it gets worse with AWD or automatic 4wd systems. However there are sounds and issues that fall out of the norm. When this happens it needs to be dealt with as it is very possible damage may be being done.

If I were you Ricksabdl I would be holding onto every piece of documentation you get. I would be on the phone with a Jeep caseworker and expressing your concern that this issue may still exist with your Jeep after your warranty is over and if they plan on extending your warranty at least with this issue until it is fully resolved. They should also replace your PTU when and if the software fix is done as since one PTU showed damage from this issue there is no reason to think the new PTU has also not been damaged and be a issue later down the road.


If you don't get the answers you're looking for I would start looking into your states lemon law. Search out others with this so called well known issue and getting statements from them may help. If you can't find a lot of people with a Jeep Compass or Renegade with this issue that goes a long ways towards saying your Jeep was broken right out the gate. Personally if I were Jeep I would be considering vehicle replacement if they cannot guarantee a fix in a reasonable time frame.

How a company stands behind their product says a lot about them and leaving someone hanging with a faulty product will have an impact on their sales. FCA does have a lot of negative press at the moment though I feel it is not earned they still need to show they will stand behind their vehicles more than ever right now.
Bingo, Finally an intelligent individual responds. Outstanding response Chris Jacobs!! You read the post and understood with total clarity what the major issue and concerns were. I must applaud you Sir! ����

Not like the other rocket scientists who post this total BS, You think that you are a certified technician but in fact you're commenting on things you have no idea what you're talking about. I told you to read the whole post. Did you? Answer ..No!!! Instead you post this crap. You can take you hard earns money and shove it for all I care.!!

"We have every right to post here so sorry to piss you off but you don't get to decide who can post and who can't. I realize I'm not doing the best job of reassuring you that your car is fine (I swear thats all I meant to do) but I don't get paid for sharing my knowledge and opinions so too bad, so sad, this is what you get buddy.Now you are too mad to even give the idea a fair consideration (that your car could be fine)."

Brilliant!!��
.
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post #23 of 51 Old 03-17-2018, 04:49 PM Thread Starter
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Quote:
Originally Posted by Ricksabdl View Post
Quote:
Originally Posted by Chris Jacobs View Post
Here is what I see and feel the clunk at around 35-40 MPH in cold weather is pretty much normal but noise from the rear PTU is something I would be concerned with especially since the dealer has made the comment that it is a known issue and a software fix is supposedly in the works. This says they know there is an issue with at least some number of vehicles. Then the fact the dealer found and was concerned about metal shavings in the unit. This means very likely whatever software issue going on may be damaging the unit. This issue is a big deal and if it were mine I would be getting pretty angry as well.

Yes often 4x4 vehicles make all kinds of weird sounds and it gets worse with AWD or automatic 4wd systems. However there are sounds and issues that fall out of the norm. When this happens it needs to be dealt with as it is very possible damage may be being done.

If I were you Ricksabdl I would be holding onto every piece of documentation you get. I would be on the phone with a Jeep caseworker and expressing your concern that this issue may still exist with your Jeep after your warranty is over and if they plan on extending your warranty at least with this issue until it is fully resolved. They should also replace your PTU when and if the software fix is done as since one PTU showed damage from this issue there is no reason to think the new PTU has also not been damaged and be a issue later down the road.


If you don't get the answers you're looking for I would start looking into your states lemon law. Search out others with this so called well known issue and getting statements from them may help. If you can't find a lot of people with a Jeep Compass or Renegade with this issue that goes a long ways towards saying your Jeep was broken right out the gate. Personally if I were Jeep I would be considering vehicle replacement if they cannot guarantee a fix in a reasonable time frame.

How a company stands behind their product says a lot about them and leaving someone hanging with a faulty product will have an impact on their sales. FCA does have a lot of negative press at the moment though I feel it is not earned they still need to show they will stand behind their vehicles more than ever right now.
Bingo, Finally an intelligent individual responds. Outstanding response Chris Jacobs!! You read the post and understood with total clarity what the major issue and concerns were. I must applaud you Sir! ����

Not like the other rocket scientists who post this total BS, You think that you are a certified technician but in fact you're commenting on things you have no idea what you're talking about. I told you to read the whole post. Did you? Answer ..No!!! Instead you post this crap. You can take you hard earns money and shove it for all I care.!!

"We have every right to post here so sorry to piss you off but you don't get to decide who can post and who can't. I realize I'm not doing the best job of reassuring you that your car is fine (I swear thats all I meant to do) but I don't get paid for sharing my knowledge and opinions so too bad, so sad, this is what you get buddy.Now you are too mad to even give the idea a fair consideration (that your car could be fine)."

Brilliant!!��
.
Not sure why the question marks in Black they were supposed to be thumbs up emojis sorry Chris!

The ones at the very bottom were thumbs down emojis.
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post #24 of 51 Old 03-17-2018, 04:52 PM Thread Starter
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Originally Posted by Toy View Post
I am glad that I found this thread. It looks like, that this issue made it over to Germany too. Had may car already at the dealership to check the transmission with no result, the noise is still there. Now I was able to advise the dealership to look at the 4 WD system. Our European uConnect 8.4 has an app called Jeep Skills, it shows a real-time graphic of the drive train. This grinding noise comes right at the point, when the rear axle kicks in.

Thank you guys for this useful thread!
Your welcome! Hope you guys have better luck with a fix.
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post #25 of 51 Old 03-17-2018, 06:41 PM
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Not sure why the question marks in Black they were supposed to be thumbs up emojis sorry Chris!

The ones at the very bottom were thumbs down emojis.

It's all good I have a hard time figuring out how to work some forums for a bit and goof up all kinds of stuff.

I have been driving 4wd vehicles for a long time now. In fact right now there are 5 vehicles in the driveway all 4wd. I have been on some sort of forum for sometime for given 4wd or general for all 4wd vehicles. I actually understand arudlang's post if they have been part of other forums dealing with 4wd vehicles. It is very common for someone that had never before owned a 4x4 to jump on a forum being very concerned with noises and actions of their 4x4 that they had never experienced from their 2wd vehicles. Some can get upset when they have convinced themselves they have a bad problem when in fact nothing is wrong. I have actually seen people get so angry over a normal operation they did not like that they sold their 4x4 swearing they will never own another 4wd vehicle.

Since I am not a forever owner of 4wd vehicles I think I am just calmer about trying to help people understand what things are going on and when to be concerned. I remember my first 4wd was an 86 lifted Jeep Cherokee XJ and it made all kinds of clunks and noises and jerking in 4wd. Luckily I had gotten it from a friend and had spent some time riding around in it and asking about these things. If not I'm petty sure I would have been convinced the thing was trying to tear itself in half. So I have been there worried about what was normal and what was not.

Then we have the issue that each type of vehicle has things unique to them. We have a 4x4 Suburban with an auto 4wd mode. It works great most of the time but the rear is allowed to slip too much before the front kicks in. On the road in the snow and ice where the front is near the same speed as the rear it is fine. Get in the mud where the front might be stopped or near stopped and the rear spinning the auto 4wd violently kicks in the front to the point your sure something broke. Solution is very simple in these conditions don't use the auto mode and go to 4wd. When going into 4wd mode you get a little clunk moving the first few feet forward as the the front kicks in then it is done.

By contrast my 03 chevy Tracker has the sweetest 4wd I have ever owned. It does not have an auto mode but moving between modes including low range there are no clunks at all and I have driven at speeds up to 55 in snow and ice without any vibrations or noises. The only time it has complained on is tighter turns on drier pavement and that is 100% normal for any part time 4x4 so when conditions look like 2wd is all that is needed you have to remember to shift back to 2wd.

Now so far a bit over 1000 miles our Compass has been great. In fact I have not even heard or felt the clunk of the driveshaft kicking in or out in 20* weather. But I suspect as it keeps breaking in that will loosen up enough to be noticeable. I did pick up on some minor noise and vibration at certain speeds on certain road road surfaces. I was quickly able to tell this is coming from the Wildpeak tires the Trailhawks get. These tires have the road manors of a much more aggressive tire it does not bother me knowing what it is but someone else might be concerned not knowing this.

I fear in your case the PTU for some reason is not allowing for enough speed difference between front and rear axles in the turns or to account for pressure that can build up from small differences in axle speeds while operating in 4wd. It is not enough to cause binding just complaining in the form of noise. This also will increase wear on certain driveline components this could account for the metal shavings. I have seen these types of things on part time 4wd systems that were run on high traction surfaces by people that had no clue they should not do this. I have even seen u-joints that blew out and ring and pinion gears break teeth in extreme conditions. But often it is just greatly increased wear in one or more places in the system as parts are forced together harder from the pressure that build up till a tire slips to relieve that pressure then it starts building again.

But keep in mind I'm just an old shade tree and these Jeeps have a pretty complicated 4wd system. I think it is using wet clutches to vary how much if any power is transferred front to rear (I'm not 100% sure on this). The computer should adjust the slippage as needed to stop driveline pressure from building when the system is in a 4wd mode. It is possible something in the software in some of these Jeeps is not doing that correctly. It is also possible there could be a mechanical issue with how the system does this. It is even possible if it mechanical as parts wear and break in the issue resolves itself.

My worry in such a case is how much damage might have been done in this process that shows up later down the road. If you love this Jeep and want to keep it outside of the warranty period I would look into one of the extended warranties FCA offers. If you explain your concerns they might even give you a better deal on an extended warranty.

If we continue to love our Compass as much as we do we will buy the lifetime unlimited warranty with a $200 deductible as by the time my wife is ready for a new vehicle I may want to keep this one as a toy.
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post #26 of 51 Old 03-17-2018, 06:48 PM
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Hope you guys have better luck with a fix.
😂 LOL, America first! For sure, they will fix your cars, before they fix ours. We are always behind, especially if they have to adapt the fixes to our Diesel models.

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post #27 of 51 Old 03-17-2018, 09:08 PM Thread Starter
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Originally Posted by Ricksabdl View Post
Not sure why the question marks in Black they were supposed to be thumbs up emojis sorry Chris!

The ones at the very bottom were thumbs down emojis.

It's all good I have a hard time figuring out how to work some forums for a bit and goof up all kinds of stuff.

I have been driving 4wd vehicles for a long time now. In fact right now there are 5 vehicles in the driveway all 4wd. I have been on some sort of forum for sometime for given 4wd or general for all 4wd vehicles. I actually understand arudlang's post if they have been part of other forums dealing with 4wd vehicles. It is very common for someone that had never before owned a 4x4 to jump on a forum being very concerned with noises and actions of their 4x4 that they had never experienced from their 2wd vehicles. Some can get upset when they have convinced themselves they have a bad problem when in fact nothing is wrong. I have actually seen people get so angry over a normal operation they did not like that they sold their 4x4 swearing they will never own another 4wd vehicle.

Since I am not a forever owner of 4wd vehicles I think I am just calmer about trying to help people understand what things are going on and when to be concerned. I remember my first 4wd was an 86 lifted Jeep Cherokee XJ and it made all kinds of clunks and noises and jerking in 4wd. Luckily I had gotten it from a friend and had spent some time riding around in it and asking about these things. If not I'm petty sure I would have been convinced the thing was trying to tear itself in half. So I have been there worried about what was normal and what was not.

Then we have the issue that each type of vehicle has things unique to them. We have a 4x4 Suburban with an auto 4wd mode. It works great most of the time but the rear is allowed to slip too much before the front kicks in. On the road in the snow and ice where the front is near the same speed as the rear it is fine. Get in the mud where the front might be stopped or near stopped and the rear spinning the auto 4wd violently kicks in the front to the point your sure something broke. Solution is very simple in these conditions don't use the auto mode and go to 4wd. When going into 4wd mode you get a little clunk moving the first few feet forward as the the front kicks in then it is done.

By contrast my 03 chevy Tracker has the sweetest 4wd I have ever owned. It does not have an auto mode but moving between modes including low range there are no clunks at all and I have driven at speeds up to 55 in snow and ice without any vibrations or noises. The only time it has complained on is tighter turns on drier pavement and that is 100% normal for any part time 4x4 so when conditions look like 2wd is all that is needed you have to remember to shift back to 2wd.

Now so far a bit over 1000 miles our Compass has been great. In fact I have not even heard or felt the clunk of the driveshaft kicking in or out in 20* weather. But I suspect as it keeps breaking in that will loosen up enough to be noticeable. I did pick up on some minor noise and vibration at certain speeds on certain road road surfaces. I was quickly able to tell this is coming from the Wildpeak tires the Trailhawks get. These tires have the road manors of a much more aggressive tire it does not bother me knowing what it is but someone else might be concerned not knowing this.

I fear in your case the PTU for some reason is not allowing for enough speed difference between front and rear axles in the turns or to account for pressure that can build up from small differences in axle speeds while operating in 4wd. It is not enough to cause binding just complaining in the form of noise. This also will increase wear on certain driveline components this could account for the metal shavings. I have seen these types of things on part time 4wd systems that were run on high traction surfaces by people that had no clue they should not do this. I have even seen u-joints that blew out and ring and pinion gears break teeth in extreme conditions. But often it is just greatly increased wear in one or more places in the system as parts are forced together harder from the pressure that build up till a tire slips to relieve that pressure then it starts building again.

But keep in mind I'm just an old shade tree and these Jeeps have a pretty complicated 4wd system. I think it is using wet clutches to vary how much if any power is transferred front to rear (I'm not 100% sure on this). The computer should adjust the slippage as needed to stop driveline pressure from building when the system is in a 4wd mode. It is possible something in the software in some of these Jeeps is not doing that correctly. It is also possible there could be a mechanical issue with how the system does this. It is even possible if it mechanical as parts wear and break in the issue resolves itself.

My worry in such a case is how much damage might have been done in this process that shows up later down the road. If you love this Jeep and want to keep it outside of the warranty period I would look into one of the extended warranties FCA offers. If you explain your concerns they might even give you a better deal on an extended warranty.

If we continue to love our Compass as much as we do we will buy the lifetime unlimited warranty with a $200 deductible as by the time my wife is ready for a new vehicle I may want to keep this one as a toy. <img src="http://www.myjeepcompass.com/forums/images/smilies/icon_smile.gif" border="0" alt="" title="" class="inlineimg" />
" I fear in your case the PTU for some reason is not allowing for enough speed difference between front and rear axles in the turns or to account for pressure that can build up from small differences in axle speeds while operating in 4wd. It is not enough to cause binding just complaining in the form of noise. This also will increase wear on certain driveline components this could account for the metal shavings. I have seen these types of things on part time 4wd systems that were run on high traction surfaces by people that had no clue they should not do this. I have even seen u-joints that blew out and ring and pinion gears break teeth in extreme conditions."

Chris, this is what is so frustrating. The new PTU had only 1400 miles on it before the techs found the metal shavings in it. It starting groaning at about 100 miles after replacement. The tech told me over the phone how disheartening it was to see the metal shavings in the unit. As we speak the thing is still groaning and vibrating. What a shame as my wife's 2014 Jeep Cherokee is quite and has had no issues what so ever. That was one of the reason I went with the Compass in the first place.
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post #28 of 51 Old 03-17-2018, 09:51 PM
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" I fear in your case the PTU for some reason is not allowing for enough speed difference between front and rear axles in the turns or to account for pressure that can build up from small differences in axle speeds while operating in 4wd. It is not enough to cause binding just complaining in the form of noise. This also will increase wear on certain driveline components this could account for the metal shavings. I have seen these types of things on part time 4wd systems that were run on high traction surfaces by people that had no clue they should not do this. I have even seen u-joints that blew out and ring and pinion gears break teeth in extreme conditions."

Chris, this is what is so frustrating. The new PTU had only 1400 miles on it before the techs found the metal shavings in it. It starting groaning at about 100 miles after replacement. The tech told me over the phone how disheartening it was to see the metal shavings in the unit. As we speak the thing is still groaning and vibrating. What a shame as my wife's 2014 Jeep Cherokee is quite and has had no issues what so ever. That was one of the reason I went with the Compass in the first place.

I had a few minutes to goof off and see what I could find relating to your problem. Not only to see if I could help you and others but I also like to be aware of any issues I might see at some point. As you can guess there simply is not much out there for our 2nd gen Compass they are just too new and not enough of them on the road with many miles on them. However the Compass sister vehicle the Renegade has been around a bit longer. Many of these share our complete drivetrain and chassis so a bit of searching under those yielded the thread below on another forum and it warrants reading all the way through as there are references to a PTU software update when available. There are also some tips that might help you determine if your issue relates like shifting to 4wd when you hear the noise to see if it stops. If nothing else if your issue is the same you know if it is that common of an issue.

Grinding/vibration/rumble Noise at ~30mph - Jeep Renegade Forum
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post #29 of 51 Old 03-17-2018, 10:18 PM
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I too have had the moaning noise at 40mph,but if I disengage traction control it immediately goes away. So why is this not repeatable by service tech?
FCA is also very un sympathetic to the issue. There is a known issue but there is no apparent fix yet. My first trailhawk lasted 7days and was replaced by the dealer. Now I am growing tired of the cannot duplicate statement from the dealer.
I just might be turning up the radio in a competitors vehicle.
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post #30 of 51 Old 03-17-2018, 11:30 PM
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I too have had the moaning noise at 40mph,but if I disengage traction control it immediately goes away. So why is this not repeatable by service tech?
FCA is also very un sympathetic to the issue. There is a known issue but there is no apparent fix yet. My first trailhawk lasted 7days and was replaced by the dealer. Now I am growing tired of the cannot duplicate statement from the dealer.
I just might be turning up the radio in a competitors vehicle.

Sadly if you spend less than 80-90k on a vehicle most play this kind of game when issues come up. This has become worse with vehicles that have so much computer involvement from bumper to bumper. Now they often try to come up with a much cheaper software fix to even mechanical problems.

It really bothers me when manufacturers start saying something is a problem without a fix like this. For a mechanical mind it is just this simple. If not all the units are having an issue only a small percentage go through the units having an issue and see what is different to those without the issue. If it is a software issue compare the software to one that does not have the issue and fix it. Mechanical issues resolve the same way.

So the way this feels is they know they have a number of Jeeps with this issue and their solution is to make a custom software to cover what might might would be an expensive mechanical fix. In some cases this might be ok in other cases you might be affecting vehicle performance and longevity.

I know someone with a small ford car right now it is on it's second automatic transmission and still having issues. They claimed software issue and now the car stretches out 1st gear barely stays in 2nd then jumps to 3rd with a huge lug to the engine till it is going fast enough to be at the right RPM for 3rd gear. Going up hill or passing it does the same thing in reverse and tachs hard in 1st. The rest of the gears are fine. Now they are saying that is the software fix and is considered normal operation. My guess is there is something about the transmission operation in 2nd gear that is the problem so they programmed the computer to use 2nd gear as little as possible

This is the kind of stuff that made me almost not want to buy a new car. It is just a dang if you do dang if you don't thing. Had a good factory backed warranty not been available I might would have just bought an older simpler vehicle and just rebuilt it!
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