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just curious if its still acting up?. ours stopped working weather we press the button or not, we don't have remote start or the higher-end advanced safety group. so far no DIC notice or any other warning lights on the instrument cluster. the car runs fine otherwise. from what i've read the ESS kinda runs on its own IBS module, so i'm guessing it shouldn't have a major effect on the rest of the system if it doesn't work? we actually like not having to press the "A" button every time we drive. thoughts?
Hi NewCsport,
If you decide to have this looked into further by your dealer, please feel free to send us a PM. We would be happy to offer additional assistance to your service visit.
Alex
JeepCares
 

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Discussion Starter · #62 ·
Service Start Stop light came on AGAIN.
Booked into the dealership again tomorrow morning.
Arrrrgh
 

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JeepCares, thank you for the offer and will PM you if needed.

10-64, sorry to hear you having more issues. like you i had an Arrrrgh moment lol. while toggling thru the screens at the stop light tonight i found "star/stop not ready battery charging. i would think these batteries last more than 1 year and 10 months? i will be keeping an eye on the screen to see if it goes off, tomorrow we're on the road for an hour + trip.
 

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Service Start Stop light came on AGAIN.
Booked into the dealership again tomorrow morning.
Arrrrgh
Hi 10-64,
We're sorry to hear about your continued concern. Unfortunately, our team is not authorized to assist customers outside of the U.S. I have included a link below with the contact information for Canadian Customer Care. We recommend reaching out to them for additional assistance.
https://www.fcagroup.com/en-US/footer/Pages/contacts.aspx
Alex
JeepCares
 

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Kinda late, but here’s the latest update from our road trip from Dec. it took about an 1 hour and 20 minutes at 65-70mph no stops and the “still charging” never went off, this is with the A button not pressed. Compass sat for 8 hours, about 45 minutes into our return trip the notice went go off and Start/Stop indicated “Ready”. The DIC display always shows 14.4v since purchase date 5.2018. About 30 minutes later into downtown traffic lights, it shut off like normal. After unpacking I took a few readings, the main battery and starter battery read identical at 12.5v. a tad low considering the 1+ drive, from past experience I would expect around 12.85v. The next morning identical readings again at 12.5v. I’ve been checking it in the AM this week and its been dropping consistently 12.46v, 12.22v, 12.15v and holding at 12.1v. on start up it drops to about 10v, which is normal. I think anything under 9v may indicate an issue. During the Christmas Holidays the Compass sat unused for a week. I checked the voltage and to my surprise it had not dropped past 12.1v. started right up and everything seems OK, but ESS still not working “Battery Charging”. One thing I have noticed while its running is the charging voltage has dropped to 14v -14.2v, kinda odd. I did find some information on the JLWranglerForums having the same issues. My concern now is how much “strain” is on the electrical system including the alternator from a constant marginal battery. My next step is to do a simple battery module reset and see what happens …

"The ESS system can be quite picky and even many dealers don't really seem to know what to do with them. In my experience one thing that must always be done before troubleshooting or replacing any parts is to perform the service manual-prescribed reset procedure, which involves removing the negative battery terminal for a few minutes and reconnecting, then driving the vehicle through at least five complete drive cycles (i.e. full warm up and normal road operation, then complete cool down and rest for at least 8 hours, and repeat.) For most people a week's worth of normal daily operation should do it. The BMS needs to observe a repeatable happy state of affairs with the battery and charging system before ESS will be permitted, and the reset procedure should provide it.
If the only error your are seeing is a constant 'Battery Charging' and nothing else is wrong with the system then in many cases the above will resolve the glitch, sometimes even better than a dozen trips to a dealer who throws unnecessary parts at the problem."

https://www.youtube.com/watch?v=rp9wUQT0MRs Disconnecting the Battery

https://www.jlwranglerforums.com/forum/threads/ess-not-ready-battery-charging-question.41103/page-2

https://www.jlwranglerforums.com/forum/threads/3-6l-ess-ibs-information.22585/

https://www.jlwranglerforums.com/forum/search/289036638/

https://jeepcherokeeclub.com/4-2014-jeep-cherokee-general-discussion/238378-ess-electric-start-stop.html
 

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I noticed the start/stop warning on the console a few months after buying my 2018 Compass Trailhawk. Start/stop was not activating when expected. It went away, but in the past couple months, I saw the warning icon again, and also messages showing that the service was not available. Again the start/stop service would not activate. The warning icon appeared off and on over the next few days. Around this time, I saw a message saying that the audio system was not available, yet the sound system seemed to work fine. I finally took it to the service center at a Jeep dealer, and after a day of investigating, they replaced the main battery as well as the auxiliary battery. All is working now. Start/stop works, and the warning icon, and messages are gone.
 

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That's great news and thanks for posting. its interesting about the audio system not being available message . hopefully ours will turn out the same. I wanted to do the service manual reset procedure, but the wife wouldn't give me the car for a week lol. she drives maybe once a day and 3x a week and not on consecutive days, so that wouldn't have worked either. The end result I'm sure is one or both batteries needing replacing. I have it scheduled to go in the first week of April just before we fly out for Easter vacation with the in-laws.
 

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Once Start/Stop stopped working in my car. I had to put car to Park, turn it off and turn on (in the middle of a big crossing of course). And then I had Check Engine and S/S indicators instantly on. Car works well, but every time I started it I had these two indicators on with message that S/S is not available. After one day everything was back to order.

Service said:
1. S/S stopped working due to engine failure and it wasn't a problem with S/S.
2. Engine failed due to lost communication with a module (whatever module it was). It can happen from time to time, "computers, you know".
3. These types of errors are cleared by car itself after 7 successful engine starts.
 

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e of a big crossing of course). And then I had Check Engine and S/S indicators instantly on. Car works well, but every time I started it I had these two indicators on with message that S/S is not available. After one day everything was back to order.
 

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Having problems with my ss as we speak. Now after a replacement main battery I'm showing battery protection mode. Dealer can't even look at it until next week sometime. I didn't think I would have to go through this with a 2018.
 

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Having problems with my ss as we speak. Now after a replacement main battery I'm showing battery protection mode. Dealer can't even look at it until next week sometime. I didn't think I would have to go through this with a 2018.
Can you just turn off the "feature" (liability) with the switch on the console then drive it?

I've heard that this can be attributed to loose fuse connections or I suppose a loose wire anywhere. I've not experienced your problem so I'm only making a blind suggestion. Good luck and please report back. That's how this forum helps everybody.
 

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Thanks for the reply but no it won't turn off. Light on the button comes on but I'm still in "Battery Protection Mode".
 

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I have a 2018 Jeep Compass Limited. I've had several issues with the car not starting, first in January 2020. The dealership said it was the battery and replaced it while the car was still under warranty. The way the car was "acting" when it wouldn't start didn't seem to be a battery issue, but that did take care of the issue for a few months. In April it happened again, and then again in June. The dealership said there were no saved codes and they could not replicate the problem when I took it in. Two days ago while at a light, the car did the auto shut-off and then wouldn't come back on. I was unable to restart the car for at least 5 minutes. I felt very unsafe being stuck in the middle of a busy intersection directing cars to go around me. I took it to the dealership today, but because it's now not under warranty they wanted to charge me for even looking at it. They also tried to tell me that all of the issues are unrelated because this time the engine light is on along with the "stop / start unavailable" message. Basically, they want to charge me for a repair. How can a car randomly not starting multiple times not be related? Any advice on how to handle this with Jeep?
 

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I have a 2018 Jeep Compass Limited. I've had several issues with the car not starting, first in January 2020. The dealership said it was the battery and replaced it while the car was still under warranty. The way the car was "acting" when it wouldn't start didn't seem to be a battery issue, but that did take care of the issue for a few months. In April it happened again, and then again in June. The dealership said there were no saved codes and they could not replicate the problem when I took it in. Two days ago while at a light, the car did the auto shut-off and then wouldn't come back on. I was unable to restart the car for at least 5 minutes. I felt very unsafe being stuck in the middle of a busy intersection directing cars to go around me. I took it to the dealership today, but because it's now not under warranty they wanted to charge me for even looking at it. They also tried to tell me that all of the issues are unrelated because this time the engine light is on along with the "stop / start unavailable" message. Basically, they want to charge me for a repair. How can a car randomly not starting multiple times not be related? Any advice on how to handle this with Jeep?
It looks to me like your dealership isn't being fair. You brought them a problem under warranty and they couldn't fix it. Now you're off warranty and they want to charge you for them to re-examine their previous failure. I'd say reach out to @JeepCares on this website. They can intercede when dealers hassle customers.
 

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Hi Key Reign,

We are sorry to hear that you are experiencing concerns with your battery and ESS. Please send us your VIN, mileage, and dealer so that we can create a case on your behalf to offer further assistance while in service.

Darlene
Jeep Social Care Specialist
Same thing happened to me today after spending hours at the dealership they replaced both batteries and still getting an alert that says “battery is charging” I called to see what’s going on that they didn’t fix correct after wasting time there and no one have yet to return any of my calls.
 

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Has there been enough problems with the Auto Start/Stop for there to be a recall on this? I am tired of needing to pop the hood and use a jumper box or a cables to start my car every day for over a year. I have an 1984 Ford that can set for 6 months and still start. Is there a way to disable the circuit for the auto start and get rid of the battery drain?
 

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You can turn it off with the switch down by the shift lever, but I don't think that disables it completely. I have to turn off that switch on mine every time I go somewhere.
 

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You can turn it off with the switch down by the shift lever, but I don't think that disables it completely. I have to turn off that switch on mine every time I go somewhere.
I know how to turn off the auto start/stop I want to know how to DISABLE the system. My Compass draws over 3 amps when turned off and just sitting mostly through the F02 70 Amp fuse. It is a battery killer.
 
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