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@ASD, I agree that's early for a battery to fail. I've never had a battery fail that young. At least your dealer discounted the replacement. I hope that's your last problem for a long time.
 

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Just happened to me. Battery is two years old and then it dies after not using it for a weekend. Nothing was left on for certain. Helfman Jeep in Houston tried to sell me a new one for $423. Wish I knew what drained it.
 

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they system is trying to charge two batteries at the same time and as stated these aren't the greatest batteries. Also, these batteries/charging system doesn't like short trips and cool/colder weather. Ours probably won't make the winter, no Start/Stop for the past 2 months "system charging" and showing 14.4v charging while running. for this past week the battery is holding at 12.15v in the AM. i chatted with with Jeep customer service yesterday and i may pay the diagnostic fee, if even that. the compass is 1 year 10 months with 11,250 miles. seems odd for the extra charge unless ya'll are over the 3/36 warranty?
 

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Just happened to me. Battery is two years old and then it dies after not using it for a weekend. Nothing was left on for certain. Helfman Jeep in Houston tried to sell me a new one for $423. Wish I knew what drained it.
Hi Andy9381,
We're sorry to hear about this. If you need any assistance while working with your dealer, please send us a PM.
Alex
JeepCares
 

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NewCsport said:
i may pay the diagnostic fee, if even that. the compass is 1 year 10 months with 11,250 miles. seems odd for the extra charge unless ya'll are over the 3/36 warranty?
There are no fees when its under warranty, unless your stealership is more crooked than they usually already are.
 

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Hey everyone,

Has anyone else had an issue where their 2018 Jeep compass battery is completely dead after sitting for 2 days or the weekend? I mean dead to the point the doors won't even unlock. I have an appointment to take it to the dealer AGAIN for this reoccurring problem and I was just curious if it was a common problem.

The only thing I have done to the vehicle electric wise was change the dome lights to LED; I'm sure that wouldn't cause an issue.
Yes, I have exactly the same problem. And the replacement battery that Pep Boys and Auto Zone computers systems suggest do not fit.
 

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Hey everyone,

Has anyone else had an issue where their 2018 Jeep compass battery is completely dead after sitting for 2 days or the weekend? I mean dead to the point the doors won't even unlock. I have an appointment to take it to the dealer AGAIN for this reoccurring problem and I was just curious if it was a common problem.

The only thing I have done to the vehicle electric wise was change the dome lights to LED; I'm sure that wouldn't cause an issue.
Yes Ive been having this issue off and on for about a year and half. I thought it was the battery so I had that replaced. It just recently started doing it on a consistent basis. If it sits for a day, i have to get it jumped. I just dropped it to the dealership today and hopefully they can fix this issue.
 

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Is your ignition stuck on? I had a situation where even though I turned off the engine and removed the key the vehicle's computer stayed up. My clue was that after it was off and parked for awhile, if I opened a door the interior lights came on but only stayed on for a few seconds then dimmed out. Normally it stays on for maybe a minute or more. That indicated that the computer hadn't shut down.
 

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Yes Ive been having this issue off and on for about a year and half. I thought it was the battery so I had that replaced. It just recently started doing it on a consistent basis. If it sits for a day, i have to get it jumped. I just dropped it to the dealership today and hopefully they can fix this issue.
Please keep us updated on your dealer visit. If additional assistance is needed, our team can connect you with a Case Specialist to assist. We are available via PM.
Alex
Jeep Cares
 

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Hey everyone,

Has anyone else had an issue where their 2018 Jeep compass battery is completely dead after sitting for 2 days or the weekend? I mean dead to the point the doors won't even unlock. I have an appointment to take it to the dealer AGAIN for this reoccurring problem and I was just curious if it was a common problem.

The only thing I have done to the vehicle electric wise was change the dome lights to LED; I'm sure that wouldn't cause an issue.
 

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My Jeep Compass 2018 sat for 2 day and when I went to start the car the battery indicator was lit. just had the battery jumped. The cars doors did unlock and the interior lights did go on. Also the car mechanic from Chrysler roadside assistance said the battery was reading fully charged. He did jump start the car and it has been running for 30 minutes. Fingers crossed, I read were the battlers only last 3 years.
 

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Hey everyone,

Has anyone else had an issue where their 2018 Jeep compass battery is completely dead after sitting for 2 days or the weekend? I mean dead to the point the doors won't even unlock. I have an appointment to take it to the dealer AGAIN for this reoccurring problem and I was just curious if it was a common problem.

The only thing I have done to the vehicle electric wise was change the dome lights to LED; I'm sure that wouldn't cause an issue.
Has happened to me thrice in the last
couple of years. Last happened a few days back and I was told that my battery needs to be replaced.
 

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they system is trying to charge two batteries at the same time and as stated these aren't the greatest batteries. Also, these batteries/charging system doesn't like short trips and cool/colder weather. Ours probably won't make the winter, no Start/Stop for the past 2 months "system charging" and showing 14.4v charging while running. for this past week the battery is holding at 12.15v in the AM. i chatted with with Jeep customer service yesterday and i may pay the diagnostic fee, if even that. the compass is 1 year 10 months with 11,250 miles. seems odd for the extra charge unless ya'll are over the 3/36 warranty?
finally had a chance to bring it in for the ESS not working. dealer tested batteries and aux. failed. replaced it with a new one BBAUX101-AA ($110) at no cost/under warranty. so far so good, it only took a few start cycles for it to activate. i'm happy, but the wifes not, lol, she has to get in the habit of turning it off again. glad it wasn't the IBM module or worse, because we have only 4 months left on factory warranty. i didn't see any major change with the charging voltage, still around 14.2v - 14.4v. the main battery seems holding a better AM reading at 12.42v
Land vehicle Vehicle Car Gauge Speedometer
Land vehicle Vehicle Car Gauge Speedometer
Land vehicle Vehicle Car Speedometer Gauge
 

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Hey everyone,

Has anyone else had an issue where their 2018 Jeep compass battery is completely dead after sitting for 2 days or the weekend? I mean dead to the point the doors won't even unlock. I have an appointment to take it to the dealer AGAIN for this reoccurring problem and I was just curious if it was a common problem.

The only thing I have done to the vehicle electric wise was change the dome lights to LED; I'm sure that wouldn't cause an issue.
I am dealing with the same issue right now.
 

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I don't really like to advertise that I disabled my factory alarm but then again how would anybody know if I did or didn't install an aftermarket alarm system of my own, right? 😅

I feel like I should share my example in full disclose (don't hunt me down and break into my damn car just because I'm letting the cat out of the bag about the alarm being shut off! 😋 )

Some of you who have been around may remember I had ALL KINDS of low battery problems my first year of ownership. The remote start will not work once the voltage drops under 12 or some threshold thereabouts. My car is always parked outside, and its ALWAYS cold in Minnesota during the winter!

There would always be enough juice for it to crank and start, I never needed a jump start per se, but, many many mornings I would try the remote start from the window... the lights would flash but it would not even try to start. This issue always corresponded with the battery being at 11.9 volts in the cold temps or whatever. K.

I also had constant issues with starting it up and being greeted with a message about the ESS being disabled and needing service for the ESS. Whatever, hated ESS, but the messages were very annoying.

Fast forward a little bit, the dealership replaced my BCM while I was experiencing a variety of intermittent issues including the above but also buggy heated wheel, buggy heated seats, and other odd things. At this point it was spring and the weather was warming up. Didn't have much problems with remote start but also wasn't really using remote start, like I said the weather was warming up. I was still having frequent mornings where it would say the ESS needed service. That ESS message only ever happened in the mornings, especially on a Monday after sitting for the weekend probably. It never really threw an ESS error message in the evenings coming home from work. K.

So a short while after that, I get myself an MXtool thingy and the AlfaOBD software right? And I start turning off all the things that annoy me in this car. I disabled ESS, just completely turned that system off. Killed it dead. The button does nothing, the screens for it are all gone from the cluster, turned it SUPER off. Also disabled the anti-theft alarm and the panic button (from the fob) alarm. Reason I did that is because of constant annoying false alarms. If you bumped the trailer hooked up to the jeep while loading something, the alarm would go off. Accidently press the panic button in your pants pocket carrying a pile of stuff? Alarm goes off. Leave your wife in the car to run into a store and she changes her mind and no longer wants to wait in the car, opens the door, ALARM GOES OFF. Acon falling from a tree your parked under? HONK HONK BEEP BEEP I couldn't take it anymore!

So like I said, disabled alarm. Disabled ESS. Disabled seatbelt warning. Turned off every aggravating part of the car that it would allow me to disable.

The result? -> Not a single battery related issue ever since. Still on the stock batteries I started with, been through two winters since I turned all that junk off. I now have no issues no matter how long the car sits parked. 10 days is the longest it sat during quarantine, it only took a couple days of sitting for it to have low voltage related problems before but now it can hang out for more than a week at a time and the batteries will still show 12.4 volts. That's what I saw anyways when I got to that day 10 of it sitting during quarantine, I saw it out in the driveway and I thought "geez that thing always gets fruity when it sits I better go put the battery charger on it" so I did that, but first I checked to see how low it had dropped those 10 days and like I said it was only down to 12.4 volts.

Can I say for sure that it was the alarm draining the battery? Not quite for 100% certain. They did replace that BCM and that wild card possibility that it was somehow wasting juice before it was replaced is maybe a 5% chance, but I would bet 90-95% that the alarm was what was really causing me low voltage issues after parking for a few days at a time.

Long story short folks, if you can (if you have alfaOBD or similar) and if you are willing to trade the (supposed) security of the factory alarm even just temporarily as an experiment, you can give it a try. You can also do an aftermarket alarm and maybe have your cake and eat it too.

In fact there might be a snowball's chance that you can talk the dealership into disabling the factory alarm for you if you BS them a little bit and tell them you need it turned off so you can have a special aftermarket system put in. I wouldn't hold my breath but you can try it.

I know that was long winded but just thought I would share because its been very interesting that I've had zero battery voltage issues ever since disabling that stuff, and still have my original batteries which are only getting older and weaker yet magically working so much better than when it first rolled off the lot.

Food for thought, most normal people are not going to disable their alarms but I tell you what its a lot nicer having no false alarms embarrassing me from falling acorns or whatever, and its really convenient how I can now take just the metal part of the key and lock the fob in the car (yank the battery from the fob first) then I can go swimming or paddle boarding with the metal part of the key on a chain and when you get back to the car you can actually open the car without setting off the alarm. If your alarm is enabled then it will always go off if you use the metal key, it is not smart enough to know you used the physical key if a door opens for any reason the alarm goes off which is pretty lame and not in keeping with the jeep lifestyle, there are many times a person would want to ditch their fob and carry only their metal key due to swimming / boating / camping / whatever.

Ok, thats enough typing for now but if you are here reading this because of those frustrating problems with the car sitting and going dead might be worth looking into. I've been 10x happier with the car ever since killing off all that garbage.
 

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Hey everyone,

Has anyone else had an issue where their 2018 Jeep compass battery is completely dead after sitting for 2 days or the weekend? I mean dead to the point the doors won't even unlock. I have an appointment to take it to the dealer AGAIN for this reoccurring problem and I was just curious if it was a common problem.

The only thing I have done to the vehicle electric wise was change the dome lights to LED; I'm sure that wouldn't cause an issue.
Hey everyone,

Has anyone else had an issue where their 2018 Jeep compass battery is completely dead after sitting for 2 days or the weekend? I mean dead to the point the doors won't even unlock. I have an appointment to take it to the dealer AGAIN for this reoccurring problem and I was just curious if it was a common problem.

The only thing I have done to the vehicle electric wise was change the dome lights to LED; I'm sure that wouldn't cause an issue.
I am having the same problem with my car. Do you know what ended up being wrong with it?
 

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Same problem. My Jeep Compass is 2018 and I have already changed my batteries 4 times. The dealer replaces the battery every time but I think the problem is somewhere else. That could be an issue for that model.
 

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Looks like that factory anti-theft system needs an update or some kind of fix, definitely not to be disabled.
This should be reported to the Jeep customer care (hello hello @JeepCares ) to check the issue with related engineers.
 
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