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They said the reason for the ESS error was a bad Aux battery. I will have to reiterate Monday that the V53 recall work would have been the cause of the battery going bad.

Did I already mention that their loaner ‘19 with 400 miles has the same error?
 

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"I had no symptoms of power-steering issues or ESS ever before or when I took it in. "

Are you sure that the ESS worked when you brought the car in for the V53 Recall? You're not one of these people that disables the ESS right after starting the car are you? If you are, you may not have seen any ESS error message displayed before the recall was done.

If you're sure the ESS was enabled and active and actually went thru an ESS autostop and autostart sequence on the day you took it in for the V53 Recall, then it's almost a sure thing that the mechanic who did the recall screwed things up. He may have forgot to reconnect the negative terminal to the auxiliary battery when he was done. That might explain it.
 

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Certain. We never disable ESS, and it definitely cycled when it was driven to the service with no error messages.

One would hope (no guarantees) they would have checked all connections before they told me they tested and found a bad Aux Battery as the cause of the error.

Oh, and I got a VHR via email the day they did the recall service (late afternoon), 50 minutes before I received the call from them saying it was done, with this message: "Your vehicle's Charging System Warning Light recently indicated there may be a problem with the electrical charging system. Have your vehicle serviced at your dealership immediately."
 

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Certain. We never disable ESS, and it definitely cycled when it was driven to the service with no error messages.

One would hope (no guarantees) they would have checked all connections before they told me they tested and found a bad Aux Battery as the cause of the error.

Oh, and I got a VHR via email the day they did the recall service (late afternoon), 50 minutes before I received the call from them saying it was done, with this message: "Your vehicle's Charging System Warning Light recently indicated there may be a problem with the electrical charging system. Have your vehicle serviced at your dealership immediately."
Is there a Charging System Warning Light? Where is it?
 

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So, the dealer replaced the battery today, and they said FCA paid for it. I gently suggested that they review the V53 repair procedures, as it may be a systemic issue, and pointed him to the fact the loaner they gave me has the same message.

The Charging System Warning Light that the VHR mentioned was the "Stop/Start Unavailable Service Stop/Start System" and the ESS error light.

By the way, below is the message that comes up on that loaner, a '19 Touring L Plus built in August 2018.
 

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I don't suppose they ventured a guess as to why the battery went bad so fast, did they? Did they say it failed a load test? Somebody here said the average life of a Pacifica's auxiliary battery is about two years, so you probably did OK with yours, right? I'm glad you didn't get charged for it. But if your loaner car (a '19 Pacifica) has the same ESS error message, what does that tell us about how long they last?

I'm used to going 8-10 years before replacing my car batteries so that's going to sting a little unless it's still covered under warranty like yours was. FCA seems to be passing out new batteries like candy at a Shriner's Parade! I'm going to make a mental note to have both my batteries load tested before I get to 3 years or 36k miles.
 

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Just to add my two cents, I had this power steering and ESS issue earlier in the year before the V53 recall and responded to this thread about steering problems back then. As of today, the Pacifica is operating as it should.
 

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So there's good news and bad news with the V53 Recall. The bad news is that the grounding problem with the Auxiliary Battery eyelet seems to affect both the ESS and the power steering units on quite a few cars that have ESS installed. The good news is that the V53 Recall, when done correctly, seems to fix ALL known ESS and power steering problems. I would suggest that anyone who is still having ESS problems after having the V53 Recall done should have the V53 Recall done again. There just may be something with this recall that isn't getting done correctly or completely.
 

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So there's good news and bad news with the V53 Recall. The bad news is that the grounding problem with the Auxiliary Battery eyelet seems to affect both the ESS and the power steering units on quite a few cars that have ESS installed. The good news is that the V53 Recall, when done correctly, seems to fix ALL known ESS and power steering problems. I would suggest that anyone who is still having ESS problems after having the V53 Recall done should have the V53 Recall done again. There just may be something with this recall that isn't getting done correctly or completely.
Might it also be the case for some, if your aux battery has been so depleted even after the performed recall it just can't recover?

If I had the recall performed and my ESS system still isn't functioning properly I'd consider getting my aux battery load tested and if you were to have it replaced you would still have to somehow (???) confirm it was being charged properly as you drive to ensure the recall actually fixed the ground issues.
 

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"Might it also be the case for some, if your aux battery has been so depleted even after the performed recall it just can't recover?"

Yes, good point. The Auxiliary Battery should now be getting charged up as needed (after the V53 Recall has been done correctly) so you might need to give it some extra time before it reaches the charging level required for the ESS going active. If the ESS system never regains its ability to function correctly after the V53 Recall, it may be because of a pre-existing bad Auxiliary Battery. FCA should have allowed the voltage of the Auxiliary Battery to be displayed on the display screen just like the main battery is. That would let you know if your Auxiliary Battery was bad, or not being charged properly, which would then prevent the ESS from ever going active.
 

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I found it before I pulled out of the lot. It was a Stop/Start requires service, but I don’t recall what was at the beginning of it. I kept the rental and left the van with them to figure out. It was later in the afternoon when they called and said what it was and how much. I told them that’s unacceptable and am waiting for them to give me a new battery for no charge.
Hi tvanoss,
If you are still in need of assistance while you are working with your dealer, we would be more than happy to offer our support. Just send our team a private message with additional details.
Julie
Chrysler Social Care Specialist
 

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I had been having problems with our Pacific stalling/ESS issues. The V53 recall did NOT fix the issue. However, about a week later we had the PCM updated (TSB 18-001-19) and that does seem to have fixed my stalling problem. It has been several weeks, and have not had a single stall.
 

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"I had been having problems with our Pacific stalling/ESS issues. The V53 recall did NOT fix the issue. However, about a week later we had the PCM updated (TSB 18-001-19) and that does seem to have fixed my stalling problem. It has been several weeks, and have not had a single stall."

What about the ESS issues, did the PCM update fix those too?
 

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I had the V53 recall performed on my '17 Pacifica Tourling L (owned for 27 months) on Wednesday, 3 July. I had no symptoms of power-steering issues or ESS ever before or when I took it in.

When I went to pick it up on 5 July, the Stop/Start error showed up as soon as I started it. The van is at 36,4xx miles, and they told me it would cost ~$350 to replace a bad Aux Battery because it is over the 36,000 miles and I have a Max Care warranty that doesn't cover it! This is after I had to wait till the van was over 36,000 miles for a rental vehicle to be available.

This can not be a coincidence. It's inconceivable that the van would magically decide to report a bad battery after work done on a ground wire to said battery and it not be caused by the work that was done.

By the way, the real reason I had the van in was to have the hood replaced due to corrosion (rust) around the seams of the aluminum hood.
I have the same issue falling this recall. I'm at 34K miles so just still within warranty. Taking it in for the second time tomorrow to have it looked at.
 

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I had the ESS error come up last month, and after replacing the auxiliary battery, it came back again last weekend, after which I replaced the main battery. Its only been a week, but ESS is back to working the way it did when we first got the van. Considering our build date, mileage, and its prior life as a rental, I'm not overly shocked that a battery or batteries would go bad.
 

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It might be too early to say, but it appears the number of new complaints filed at the NHTSA Office of Defects Investigation for the "engine stalling while underway" issue are way down for the 2018 Pacfica.
 
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