Dealership refusing to really fix start/stop issue

[jay21mojave]

BTW.. NOT All Dealers are like you describe/experienced.. I am fortunate to have a 5 STAR Great Dealership.
Jeep Head Office
1000 Chrysler Drive Auburn Hills,
MI 48326-2766, United States


Jeep Customer Service
Phone: 877-IAM-JEEP
Phone: 1-877-426-5337

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[Rubiwoo]

i usually turn it off for about 3 days and on for 2-3 weeks. Then off for 3 day, etc... seems to be fine doing that. the issue has not come back and I am using the original battery in my 2020.

 

[QuintusMaximus]

Super frustrating, sorry that's happening.

 

[KAT]

Try this: https://www.jeepgladiatorforum.com/forum/members/jeepcares.17945/

Thank you so much!!!

 

[KAT]

BTW.. NOT All Dealers are like you describe/experienced.. I am fortunate to have a 5 STAR Great Dealership.
Jeep Head Office
1000 Chrysler Drive Auburn Hills,
MI 48326-2766, United States


Jeep Customer Service
Phone: 877-IAM-JEEP
Phone: 1-877-426-5337

Thank you!! We had a great dealership when we were stationed in SC previously. Unfortunately, our closest one to where we are stationed now has been nothing but problems (We aren't the only ones who have had issues with them). We move again next year to San Diego where I am hoping there will be a better dealership but by then we will be out of warranty.

 

[dcmdon]

Thank you!! We had a great dealership when we were stationed in SC previously. Unfortunately, our closest one to where we are stationed now has been nothing but problems (We aren't the only ones who have had issues with them). We move again next year to San Diego where I am hoping there will be a better dealership but by then we will be out of warranty.

I forgot to pass on to you thank you for YOUR service.

I know that much of the stress of deployments falls directly on the family of the servicemen. More specifically, on the wives (and husbands). Seriously. Thank you.

 

[ShadowsPapa]

We suspect it's the ESS system not charging and our dealership refuses to look any further.

ESS system not charging? The ESS system doesn't charge anything. All ESS does is look at a list of criteria that needs to be met - and if it's met, shut off the engine at a stop, and if it's not met, not shut off the engine at a stop.
ESS has no input or control of charging and nothing to do with charging.

When I asked them to explain how a 3 month old battery needs charging again,

Easy, a NEW battery can be in need of charging if you don't drive the truck far enough or often enough to charge an AGM battery.......... there can be other reasons a new battery - one only weeks old, needs charging.

When the batteries are too low, ESS will not work with an "auto stop/start not ready, battery charging" message. ESS may not work because one of the cats isn't hot enough or for various other reasons. It won't say why if it's one of those other reasons. It normally only reports specifics for cabin temperature, battery charging, steering wheel turned, engine temperature too cold/hot, that sort if thing.

Seeing that you supposedly drive it regularly, if the main battery is approaching 3 years old and was not replaced when the aux battery was............ oddly enough, AGM batteries in cars and trucks don't seem to last all that long.
I suggest always replacing them in pairs but Jeep will not do that under warranty because of their really strict test procedure that MUST be followed for warranty replacement. It's so strict they must use a specific machine with specific software and be connected to their network so that it can send a report back directly to Jeep with all sorts of information.

 

[Jeep-A-Kneez]

Had the same issue, and always low battery, they would charge up and all would be good for a week or so. After trip#4, and some heavy debating, the main battery was replaced. That's been about 3 months ago and all is still well.

Mine is also a daily driver, about 30 highway miles to work, so plenty of time to charge. I too despise the auto start/stop, but the truck is new and everything should work.

Good luck with your issues.

 

[KAT]

I forgot to pass on to you than you for YOUR service.

I know that much of the stress of deployments falls directly on the family of the servicemen. More specifically, on the wives (and husbands). Seriously. Thank you.

Thank you! I've enjoyed supporting him through his 22 years so far (and many more to go-lol!) as well as supporting our military families along the way. It's not always easy but I wouldn't have it any other way!

 

[Blade1668]

KAT
I wish one of our members here was closer or could recommend a better local dealership for you. I've had S###y service from a few dealership's especially near where I was stationed.
Best luck with the problem and getting it fixed. Plus on the best with husband deployment and you, family dealing with it.

 

[jebiruph]

The start/stop hasn't worked in almost a year. Last time we brought it in, they said the aux battery was bad and they replaced it. It only worked randomly once since then in the 3 months since we've had the new aux battery. The message always says "start/stop not ready". It's driven almost daily min about 40 miles a day for a commute and then lots of truck time with after school sports and such. The rental we got while it's at the dealership is a new gladiator and start/stop has worked the entire time since we've had it so I don't think it's the temp outside, distance, etc. We also take it on long trips (3+ hours) and it still doesn't work then. We are at a loss as to why it's not working

Set your instrument cluster to monitor your voltage for a few trips. If your voltage stays above 14v, it's a good sign that the battery sensor is reporting that the main battery is not fully charged and the battery sensor might need reset. It's attached to the negative terminal of the main battery and can be reset by unplugging the 2 wire connector for a few seconds.

 

[NC_Overland]

Hi- like most people, we are having the start/stop issue as well. We have a 2020 Gladiator. We brought it to our dealership in June and they replaced the aux battery. Since June it has only worked once and it was 2 weeks ago for no reason (short trip and no different driving habits during the drive). I brought it in this past Friday and they said that they charged both batteries and that fixes the issue. We don't believe it as it's a new battery so why was it needing to be charged anyway? We suspect it's the ESS system not charging and our dealership refuses to look any further. When I asked them to explain how a 3 month old battery needs charging again, they don't give me an answer. They just want to get you in and out real fast without actually figuring out what is causing the issue.

I reached to Jeep Cares and opened a case on Friday. When I called today to check on the status the representative called the dealership and spoke with the GM (who supposedly is out of the office today and the rep didn't get the name of who he spoke with). The Jeep Cares rep told me there is nothing he can do and closed my case without telling me. I found out later when I called back again asking to speak with someone else and the new rep told me the prior rep closed our case.

I can't keep bringing it back in when it doesn't work. Our dealership is scheduling 2 months out so it's hard to get in. To top it off, our radio got fried when the tech did an update on Friday and a part for another issue that was ordered the last time is the wrong part and has to be ordered all over again. I love our Jeep but I feel like it is at the dealership more than we have had it.

Anyone have any help or suggestions? I am trying to get the dealership to check out the charging system as well as replace BOTH batteries and they told me they wouldn't. The next closest dealership is 1.5 hours away which is too far for us. Any help or suggestions is welcomed. Thank you!

At least they replaced the auxiliary battery. I brought mine in three times and they said nothing was wrong with it. Twice literally with the auto start stop unavailable message on. Same with my service 4wd light. I’ve bright it in four times for that. Once with the light literally on and they say they don’t know how to fix it because there isn’t a code. Jeep dealers are beyond horrible.

I almost lost it last time when they tried to charge me a diagnostic fee (while under the 3/36) because they said nothing was wrong with it. It literally had the service 4wd light on. Not that it should matter, but I bought it new too. They also tried to charge me for a loaner car and they didn’t even look at it for three days and their shop foreman drove it home without asking me. On top of that, they gave it back to me with the gas light on and it had 3/8s of a tank when I dropped it off.

 

[KAT]

At least they replaced the auxiliary battery. I brought mine in three times and they said nothing was wrong with it. Twice literally with the auto start stop unavailable message on. Same with my service 4wd light. I’ve bright it in four times for that. Once with the light literally on and they say they don’t know how to fix it because there isn’t a code. Jeep dealers are beyond horrible.

I almost lost it last time when they tried to charge me a diagnostic fee (while under the 3/36) because they said nothing was wrong with it. It literally had the service 4wd light on. Not that it should matter, but I bought it new too. They also tried to charge me for a loaner car and they didn’t even look at it for three days and their shop foreman drove it home without asking me. On top of that, they gave it back to me with the gas light on and it had 3/8s of a tank when I dropped it off.

Sounds similar to my dealership. When it was in last year for a rear wheel axle replacement due to a faulty sensor, they told me Jeep doesn't pay for a loaner under warranty on Sunday's yet my vehicle was in pieces for weeks in their shop and not able to be driven. As soon as I let Jeep Wave know, they called and took care of it.

We also had a check engine light on. My husband accidentally deleted it when reading the codes with our new reader. The system still showed the code. They told me since the light wasn't on (even though it still read as a code), they couldn't fix it. Told me to bring it in next time but they were scheduling 3+ months out at the time.

Some of the dealerships are crazy! I'm sorry you've had to go through some crazy things too.

 

[Jeeperjamie]

I had the same issue, they replaced the big battery in mine and it's been good to go since they did it. AutoZone was showing the big battery as being good, but when my dealership put it on their machine the big battery was showing a dead cell. Auto/Start stop had been working better than it has in a while now.

I feel like the big battery isn't charging the small battery and that may be your issue. This thing has been being misdiagnosed for a while now. I've been told that by more than one tech and I trust the dealership I use as well. They are normally spot on and I'm out of warranty and they charged me the Diagnostic fee but they do the service then it's taken off the price. I get why they charge it, the dealership's time is money and if they diagnose everything for free for people then they would be out a pretty good bit man hours. Just saying, their diagnosis on the it was accurate where AutoZone a wasn't and I would of spent money on a small battery when it wasn't the issue.

 

[ShadowsPapa]

I had the same issue, they replaced the big battery in mine and it's been good to go since they did it. AutoZone was showing the big battery as being good, but when my dealership put it on their machine the big battery was showing a dead cell. Auto/Start stop had been working better than it has in a while now.

I feel like the big battery isn't charging the small battery and that may be your issue. This thing has been being misdiagnosed for a while now. I've been told that by more than one tech and I trust the dealership I use as well. They are normally spot on and I'm out of warranty and they charged me the Diagnostic fee but they do the service then it's taken off the price. I get why they charge it, the dealership's time is money and if they diagnose everything for free for people then they would be out a pretty good bit man hours. Just saying, their diagnosis on the it was accurate where AutoZone a wasn't and I would of spent money on a small battery when it wasn't the issue.

The big battery doesn't charge the small battery. That's not how the aux battery is charged. It is charged directly by the alternator via fuse n3.
If that fuse is blown it can't get the charge fron the alternator.

If this was mine..............I would charge each battery independently using a GOOD AGM battery charger. Take the neg cable off the main battery and then separate the two neg cables and charge the small battery then the main battery. I would while doing that have the IBS off and disconnected. This would "reset" the IBS.

Finally, when that is done, from then on, charging the batteries otherwise, ONLY charge through the IBS, never directly to the neg terminal on the main battery. Also ground any accessory only to the top of the IBS or a body ground.

Again, I would use a good agm charger, charge each battery separately, reset the IBS, and go from there. It helped my 2020.

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