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Hey delsoul6,

We sincerely apologize for the trouble you are experiencing. Please let us know via private message if you decide to have your dealer look into this. We would like to have this documented and have a case escalated in your behalf so a Case Specialist can work with your dealer to help find a potential solution.

Mark
Chrysler Social Care Specialist
I also have the same at 34K miles and am going to the dealer tomorrow. It has been eroding for a year before finally giving me a warning light that the dealer would acknowledge, if you give me a number I'd love help. I would also like to know why the wireless internet has never worked.
 

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Hello Kevin,
Have you received any feedback from your dealer regarding the Aux battery? If not please provide us with the following:
VIN:

Vehicle Mileage:

Full Name:

Preferred phone number:

Earliest call time:

Latest call time:

Updates via email: Y/N [Email address]

Vehicle location: [Customer/Dealer/IRF]

Date and time of appointment: [Insert Date and Time]

Confirmed appointment with: [Dealer and Dealer Contact]

Lamar
ChryslerCares
 

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I am also having this problem. No recalls recently though but ESS light came on yesterday. With the COVID lockdowns, my van hasn't been the daily driver that it was before March. Could that be the issue with the battery? I really don't want to take it to a dealer and get charge a diagnostic fee when they know exactly what is wrong. I have 41500 miles on mine but bought the van used last November with 29000 miles. Also its a 2018 touring L
 

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I am also having this problem. No recalls recently though but ESS light came on yesterday. With the COVID lockdowns, my van hasn't been the daily driver that it was before March. Could that be the issue with the battery? I really don't want to take it to a dealer and get charge a diagnostic fee when they know exactly what is wrong. I have 41500 miles on mine but bought the van used last November with 29000 miles. Also its a 2018 touring L
You can pull the aux battery and take it to most any national auto parts store and they will load test it for free.

If it is your aux battery (which 99% of the time that's what the ESS warning means) which has degraded to the point that you are receiving the ESS warning, over time if you don't replace your aux battery it will suck the capacity out of your main battery and eventually your van will not start.

If you don't mind the warning message and do not want to use the ESS feature just disconnect the negative terminal from the aux battery to prevent it from draining the capacity of your main battery.
 

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2018 Limited | Velvet Red Pearl, Black/ Diesel| Build date 06/2018
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I too have the error. I have an appointment Monday 8/10/20 to take the car in. My Limited in an '18 with 32k miles, so I'm under warranty. I want to see what they say. I'm sure there is going to be a $100 diagnose fee, but they better not charge me for replacing the AUX or main battery as this is obviously a wide spread problem.



UPDATE: battery and aux battery were replaced under warranty. didn't cost me a thing, not even a diagnose fee. ESS back on-line and no errors - but i still turn it off every time, because nobody wants ESS anyway!
 

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I just had to put new batteries in my 2017 pacifica. It's a gas engine but has the on/off at stop light feature. AutoZone said an H7 battery was what I needed, I confirmed that online with other auto stores. I did not match the H7 battery up with the factory one before I left the store and I should have. I assumed we were both right using an H7 battery. Long story short, an H7 does not fit period. It's too long to fit in the battery box/compartment. I had to go back and get an H6 which still had more CCAs than the factory battery. I did replace the aux battery as well. The aux battery I got to replace the junk one had the positive and negative on opposite sides compared to the factory battery, not a big deal until you try to put the strap over the top and the plastic piece needs flipped around to fit the grooves on top of the battery. Had to cut the threads holding the plastic piece to the strap and flip the plastic piece around. Worked great then. What should've been an easy project turned in to a few hour pain in the butt.
 

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I have a 2018 Chrysler Pacifica. My remote start system light came on last month and both batteries died. I tried to charge them, but a charge wouldn't take. I had it towed to the dealership at my expense and they are now charging me $500 for two new batteries and the diagnostics. If this is a known issue on a 2-year-old vehicle, why is that the only solution? My dealership service department said nothing else was wrong with the vehicle. Only that the batteries were bad.I asked if this was a warranty issue and was told that it was not. Brand new batteries only last for 2 years and there's nothing I can do about it?
 

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I have a 2018 Chrysler Pacifica. My remote start system light came on last month and both batteries died. I tried to charge them, but a charge wouldn't take. I had it towed to the dealership at my expense and they are now charging me $500 for two new batteries and the diagnostics. If this is a known issue on a 2-year-old vehicle, why is that the only solution? My dealership service department said nothing else was wrong with the vehicle. Only that the batteries were bad.I asked if this was a warranty issue and was told that it was not. Brand new batteries only last for 2 years and there's nothing I can do about it?
How many miles do you have on your Pacifica?

It seems like our Pacifica's are very hungry for electricity and its almost like the ESS feature was a last minute design add on to gain a few tenths of a mpg for the EPA fuel numbers. This combination of a high user of electrical energy and the poor design of the ESS results in the Pacifica consuming batteries, both main and auxiliary at an unprecedented rate.

Many who have had their batteries fail were able to ge them replaced under the 3yr/36K mile warranty, but have heard of some not as well.

You can try to message ChryslerCares, place your pointer over their screen name (post #22 above) and a pop-up should appear. They maybe able to help plead your case.
 

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How many miles do you have on your Pacifica?

It seems like our Pacifica's are very hungry for electricity and its almost like the ESS feature was a last minute design add on to gain a few tenths of a mpg for the EPA fuel numbers. This combination of a high user of electrical energy and the poor design of the ESS results in the Pacifica consuming batteries, both main and auxiliary at an unprecedented rate.

Many who have had their batteries fail were able to ge them replaced under the 3yr/36K mile warranty, but have heard of some not as well.

You can try to message ChryslerCares, place your pointer over their screen name (post #22 above) and a pop-up should appear. They maybe able to help plead your case.
We're over 36,000 mi. I'm still unhappy that these batteries look like they're going to expire every couple of years simply because of poor design and I have to eat the cost. Especially because the mileage is not what's causing the failure
 

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Normally the batteries don't expire every couple of years. Something caused it. However the design of the ESS system can cause a defective AUX battery to bring down the main battery, and that is a terrible design. There needs to be some design change to safeguard against this. Dumping ESS would be my first choice, but that's probably not going to happen.
 

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I just wanted to add my own experience with the ESS system.

On Monday, I was driving our 2018 Pacific, stopped at a stop sign and when I took my foot off the break, the car died as the engine was starting back up. I restarted the van and moved to the side of the road and turned it off for a minute. When I turned it back on, the message came up that the start/stop system was unavailable and needed to be serviced. We've driven it a few days that way but I was nervous that something would happen again while I had my kids in the car so I got an appointment at our dealership ASAP.

We are outside of our certified preowned comprehensive warranty but we are still under the powertrain warranty AND we have the Max Care extended warranty.

I dropped the van off with our dealership this morning and just heard back that apparently BOTH the regular battery and the aux battery are needing to be replaced. I'm still a little unsure of how the car was able to restart almost immediately after it died at the stop.

I've now been told that both batteries need to be replaced.

As background information, our van has been in the shop many times since we purchased it. First, it was in the shop for months because one of the captain's chairs wouldn't latch. We've also had issues with the entertainment system screen not responding or not working all together. The dealership replaced it and we don't usually have issues with it but have occasionally and irregularly since it was replaced. In addition, we've been into the shop multiple times because our driver's side sliding door stopped responding. It took many trips to two different dealerships before they were able to find a fix.

In the end, I'm really left feeling like we ended up with a faulty product and it's frustrating that Chrysler really sells how safe the van is but now I am concerned that we may have a more serious electrical issue going on that is just showing a variety of symptoms.

I love the van and especially enjoy how smoothly it drives when it is functioning properly but the last thing I need or want is to be stuck in a faulty vehicle with my kids in an unsafe situation.
 
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