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Yes, 4 Miles after we drove out of the Dealership the ESS light came on saying "Stop/Start Unavailable Service Stop/start System". So most days it does not work for us. When we drive to the Dealership it always some how goes off and the Dealership says they have no idea what it could be and no codes are showing up. so he were are with a Brand new Broken Van... Great.
I had a recall notice on my Pacifica. I believe it was to fix the start/stop feature. I still disable it with the interior switch. The disabled light comes on most of the time. Now I'm not sure whether or not it was fixed.
Hi Mistery510,

We would like to document this in our systems and provide further assistance. Please send us a PM with your VIN and mileage.

Hi [email protected],

Have you returned to the dealer since this concern? We would be happy to provide assistance while your Pacifica is in service. Please send us a PM.

Darlene
Chrysler Social Care Specialist
 

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Discussion Starter #22
Hello smartknife,
This is not that type of experience we want to hear from our customers and are glad that everyone is OK. We understand the importance of having a reliable ride, and regret that this feature has caused some concern. We would like to offer our assistance should you choose to visit your dealer to have this looked into further. Please feel free to send us a private message.
Julie
Chrysler Social Care Specialist
I contacted my dealer Monday morning, they scheduled 6/13 for me. I don't believe they can catch the software bug. Just send to them in case.

The vehicle came back to functional as normal after the fault, the Stop/Start function was back to normal too. When the fault occurred, the starter was functional. I could saw the engine reached 7000rpm when the starter keeping working. So I believe the problem came from fuel system or other systems (the second battery?), but not the engine or starter.

When the Stop/Start try to start the engine, it should start the starter, and also fuel system, ignition system. I don't think the problem was from spark plugs or wires. It is highly possible that the fuel system was failed to start, but the Stop/Start lacks of fuel system detection. So the engine could not start. The only method is turn off the vehicle to reset the computer. I will prepare a wrench in the vehicle to disconnect the battery when another strange issue occurs.
 

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This actually just happened to my wife too. Was able to to restart from park after a few minutes. We have a 2018 that was delivered in January.
 

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This actually just happened to my wife too. Was able to to restart from park after a few minutes. We have a 2018 that was delivered in January.
Hello Pacdw,

As mentioned to the other forum members, we'd be more than glad to help if you're thinking you'd like to work with the dealer. We're available via direct message and would need your VIN to get started.

Jasmine
Chrysler Social Care Specialist
 

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I cancel stop and start in the summer because it shuts off the condenser in the A/C. And if you're sitting at a long light, the van gets a little stuffy. So, I'd rather not have so much strain on the stop/start system in the summer. IN the winter it is fine.
 

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Had the exact issue myself yesterday afternoon. Van stalled as pulled off the freeway at stop light. Would not restart for 3 attempts. Finally turned off ignition completely and opened door. Waited about 30 seconds while angry motorist raced by me on either side (had hazards on). Each attempt to restart I could hear a loud thumping noise behind the driver side near the sliding door. Sounded like someone was literally banging on the side of the car. Anyways on 4th attempt after opening drivers side door, I got the van to start. Had a message on the drivers dash that said, "Stop/Start Unavailable Service Stop/Start System". Van has 21,989 miles on it and dealer told me recall update HAD been done. Stopped at nearest gas station and after refueling anticipated error code would clear with a fresh restart, however as of this am I still have the error on my dash and plan to see the dealer tomorrow at 7am. I will not let my wife drive this vehicle which our children in it until this is resolved!
 

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ad a message on the drivers dash that said, "Stop/Start Unavailable Service Stop/Start System". Van has 21,989 miles on it and dealer told me recall update HAD been done. Stopped at nearest gas station and after refueling anticipated error code would clear with a fresh restart, however as of this am I still have the error on my dash and plan to see the dealer tomorrow at 7am.
This is good! I've read lots of stories of people having this issue and the dealer not being able to recreate the problem to diagnose.

If your ESS is showing a fault, they have something to fix. This may help others who don't have a persistent fault code. Please let us know what they say tomorrow.
 

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Had the exact issue myself yesterday afternoon. Van stalled as pulled off the freeway at stop light. Would not restart for 3 attempts. Finally turned off ignition completely and opened door. Waited about 30 seconds while angry motorist raced by me on either side (had hazards on). Each attempt to restart I could hear a loud thumping noise behind the driver side near the sliding door. Sounded like someone was literally banging on the side of the car. Anyways on 4th attempt after opening drivers side door, I got the van to start. Had a message on the drivers dash that said, "Stop/Start Unavailable Service Stop/Start System". Van has 21,989 miles on it and dealer told me recall update HAD been done. Stopped at nearest gas station and after refueling anticipated error code would clear with a fresh restart, however as of this am I still have the error on my dash and plan to see the dealer tomorrow at 7am. I will not let my wife drive this vehicle which our children in it until this is resolved!
Hi epolta,
We understand your concerns. Please send us a private message with your VIN so we can document this and help you out the best we can.
Lydia,
Chrysler Social Care Specialist
 

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Had the exact issue myself yesterday afternoon. Van stalled as pulled off the freeway at stop light. Would not restart for 3 attempts. Finally turned off ignition completely and opened door. Waited about 30 seconds while angry motorist raced by me on either side (had hazards on). Each attempt to restart I could hear a loud thumping noise behind the driver side near the sliding door. Sounded like someone was literally banging on the side of the car. Anyways on 4th attempt after opening drivers side door, I got the van to start. Had a message on the drivers dash that said, "Stop/Start Unavailable Service Stop/Start System". Van has 21,989 miles on it and dealer told me recall update HAD been done. Stopped at nearest gas station and after refueling anticipated error code would clear with a fresh restart, however as of this am I still have the error on my dash and plan to see the dealer tomorrow at 7am. I will not let my wife drive this vehicle which our children in it until this is resolved!


Exact same thing happen to me, but split time wise. My ESS had been iffy for a while, often restarting the engine just seconds after stopping it, most often listing battery voltage as the reason.

One day stopped at a light the engine stopped normally then cut out telling me I had to shift into Park. Took 3 tries to get it restarted including leaving it off for 30 seconds after opening the door. Once it got going things seemed ok again but I manually switched ESS off every time I got into the car.

Fast forward a few weeks, on a long road trip and we stop for dinner. I go to get the van to pickup the family after dinner. The van refuses to start with loud popping sound each time. Took 4 tries, again with 30 second wait and door open it starts up and now shows the “Stop/Start Unavailable Service Stop/Start System". It’s been in that state ever since. I suspect the popping sound came from active noise canceling going crazy.

Just adding it to my list of issues for the dealer to try to fix (which is now 10 long) when I get a chance to take it in. It’s too bad I love the can so much otherwise I would put up with this crap.
 

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Exact same thing happen to me, but split time wise. My ESS had been iffy for a while, often restarting the engine just seconds after stopping it, most often listing battery voltage as the reason.
If your A/C is on high or max then the engine will immediately cut back on because of the voltage needed to power the A/C at max. But even with the A/C on normal operation, the engine will eventually cut back on if you are still stopped to power the A/C.

I have noticed that with the A/C off, the engine will stay off as long as you are stopped and will not cut back on until you release the brake.

Just my experience.

I'm currently at 14.5K miles on my gas Pacifica. So, I there may be some time before I experience this issue. If it is a bug in all Pacificas, I hope it gets ironed out before I hit 20K miles.
 

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If your A/C is on high or max then the engine will immediately cut back on because of the voltage needed to power the A/C at max. But even with the A/C on normal operation, the engine will eventually cut back on if you are still stopped to power the A/C.



I have noticed that with the A/C off, the engine will stay off as long as you are stopped and will not cut back on until you release the brake.



Just my experience.



I'm currently at 14.5K miles on my gas Pacifica. So, I there may be some time before I experience this issue. If it is a bug in all Pacificas, I hope it gets ironed out before I hit 20K miles.


Yeah, I’m aware of the AC causing the restart, but in those cases I believe the message on the console indicates the restart was caused by hvac and not battery voltage. For me it was initially worse when it was cold out as opposed to hot. Assume it’s related to a bad ESS battery that could not handle the cold and then eventually died entirely.
 

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My new Pacifica ESS Stop/Start has been mostly non-functional since the first day we had it (Stop/Start not ready - battery charging). Took it in to the dealer for some other issues and then finally told them the Stop/Start was totally inop and they needed to fix it. They started work and on the first day checked both batteries (good), did full load checks on both (good). Had to take it back for more work to include a new Intelligent Battery Sensor (IBS) and Battery Relearn Procedures per the technical instructions. The dealer eventually initiated a "Star Project" whatever that is, with the manufacturer. It stayed in the shop for a couple of days and lots of diagnostics/repair/etc. Got it back today and so far, it's acting like new again. YAY!!! And all my owner set-ups for phone, radio, etc are still there which is sometimes an issue. Our dealer took a while to figure out the ESS problem but I think they've done it now.

So if the ESS Stop/Start is still a problem for folks, check out the Star Project thing. ????
 

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If your A/C is on high or max then the engine will immediately cut back on because of the voltage needed to power the A/C at max. But even with the A/C on normal operation, the engine will eventually cut back on if you are still stopped to power the A/C.
I just wanted to point out that it's not an electrical thing with the A/C, but rather a mechanical one. The A/C compressor on the gas models is driven by the engine, which means it stops when the engine does. Once the ESS activates, the HVAC system switches to recirculate and turns down the fan in attempt to keep the passengers cool. Once it detects the cabin getting too hot, it restarts the engine to turn the compressor and cool the cabin.
 

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My new Pacifica ESS Stop/Start has been mostly non-functional since the first day we had it (Stop/Start not ready - battery charging). Took it in to the dealer for some other issues and then finally told them the Stop/Start was totally inop and they needed to fix it. They started work and on the first day checked both batteries (good), did full load checks on both (good). Had to take it back for more work to include a new Intelligent Battery Sensor (IBS) and Battery Relearn Procedures per the technical instructions. The dealer eventually initiated a "Star Project" whatever that is, with the manufacturer. It stayed in the shop for a couple of days and lots of diagnostics/repair/etc. Got it back today and so far, it's acting like new again. YAY!!! And all my owner set-ups for phone, radio, etc are still there which is sometimes an issue. Our dealer took a while to figure out the ESS problem but I think they've done it now.

So if the ESS Stop/Start is still a problem for folks, check out the Star Project thing. ????
Good news on getting your ESS operational! By the way, here's the scoop on what a STAR case is, as it was explained to me: STAR is an acronym for Service Technical Assistance Resource center. It's a service Chrysler provides for technicians to call for assistance with troubleshooting difficult problems.

Unfortunately, here's the reason I know what a STAR case is: my Pacifica, which was delivered on 6/30/18, has been at the dealership for over 2 weeks now for correction of a creaking noise from the rear of the vehicle. The dealership has opened a STAR case with Chrysler. As of yet, the local technicians nor the Chrysler engineers have been able to identify the source of the noise. They've tried many different things, all suspension related, but none have been successful in eliminating the noise. https://www.pacificaforums.com/forum/193-2017-chrysler-pacifica-minivan-general-discussion/39476-creaking-popping-noise-rear-vehicle.html
 

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My new Pacifica ESS Stop/Start has been mostly non-functional since the first day we had it (Stop/Start not ready - battery charging). Took it in to the dealer for some other issues and then finally told them the Stop/Start was totally inop and they needed to fix it. They started work and on the first day checked both batteries (good), did full load checks on both (good). Had to take it back for more work to include a new Intelligent Battery Sensor (IBS) and Battery Relearn Procedures per the technical instructions. The dealer eventually initiated a "Star Project" whatever that is, with the manufacturer. It stayed in the shop for a couple of days and lots of diagnostics/repair/etc. Got it back today and so far, it's acting like new again. YAY!!! And all my owner set-ups for phone, radio, etc are still there which is sometimes an issue. Our dealer took a while to figure out the ESS problem but I think they've done it now.

So if the ESS Stop/Start is still a problem for folks, check out the Star Project thing. ????
It sounds like in some cases just replacing the battery/batteries is not the solution. It can be more complicated with the 'intelligent battery sensor' and the time consuming 'battery relearn' procedure. Good news about your personal setting still being there after the work. :smile2:
 

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I bought my 2018 van 2 weeks ago and it's been in the shop since mile 362 when it stalled and the passenger window went down by itself. Was told I needed a new battery for the ESS system and it won't be in until Oct. 31st. They told me to turn off the ESS everytime I start it. Picked up the van yesterday, went to work.... wouldn't start after work. I'd hit the brake and the wipers would come on. Lights flashing everywhere inside. Ticking noise the whole time. Husband drove to my work and found the cable on the battery was loose and after tightening it, the van started. But not without all the codes that it threw. Drove it right back to the dealer to have fixed again. Haven't picked it up yet but I'm leary to drive this unreliable vehicle. Very disappointed in this van and Chrysler for shoddy work. This van is brand new!!!!!
 

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Sorry to hear that Barb, nothing more frustrating than to have this happen to such a new vehicle.

I gotta say...what you describe sounds to me like a loose battery cable. I wonder if your husband fixed the issue that your dealer misdiagnosed? The codes could have been set when the van was having low-voltage issues from the loose cable. Just a thought, I hope you get your new van back on the road soon!
 

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I'm in the same situation with my 2018 Pacifica, at about 10,000 miles the car stalled two days in a row and then ESS system just shut itself off. Took it in and they fixed it but when I left it stalled at an intersection & the van shut the system down again. It is back in the dealer right now. Both batteries test perfect so they also called STAR and I will see where that takes us next.
 

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ESS FAILED for a second time on my wife yesterday. Showed a fault code on our way to the dealership for oil change and HID headlamp replace (after only 19K miles) on Thursday this week. Dealer couldn't find anything wrong with ESS so sent us home with it. Yesterday (Friday am) van stalled on my wife again. (Second time for us). She limped to the dealer and they said the secondary battery was dead and replaced it. This is now the SECOND time the backup battery has been replaced, but they can find no underlying problem with the electrical/alternator system.

I don't accept that! I'm opening a case with Chrysler corporate. My family is NOT SAFE in this van. This has been the worst vehicle I have EVER purchased.
 

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