The Chrysler Minivan Fan Club Forums banner
1 - 20 of 39 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter · #1 ·
I've done a search and can't find a previous thread discussing the same problem I'm having on my 2018 Pacifica.

For the last few months I've noticed the Auto Stop is not working. The van runs just fine, no issues at all, but now it never shuts the engine off when coming to a stop. I've tried resetting to default settings on the screen, have toggled the button that has the "A" with the circle on it several times, and I've even tried driving with the A/C off to see if the A/C load is what is keeping the car from shutting down. It's as if the ESS feature is disabled or something.

Anyone else have the same issue? The only thing I haven't done is disconnect the battery for a few minutes to completely reset the computer or take it to the dealership (still have a while to go before the oil needs replacement)
 

·
Registered
Joined
·
539 Posts
I've done a search and can't find a previous thread discussing the same problem I'm having on my 2018 Pacifica.

For the last few months I've noticed the Auto Stop is not working. The van runs just fine, no issues at all, but now it never shuts the engine off when coming to a stop. I've tried resetting to default settings on the screen, have toggled the button that has the "A" with the circle on it several times, and I've even tried driving with the A/C off to see if the A/C load is what is keeping the car from shutting down. It's as if the ESS feature is disabled or something.

Anyone else have the same issue? The only thing I haven't done is disconnect the battery for a few minutes to completely reset the computer or take it to the dealership (still have a while to go before the oil needs replacement)
Sounds like a blessing.
 
  • Like
Reactions: Philip

·
Super Moderator
Joined
·
27,919 Posts
I've done a search and can't find a previous thread discussing the same problem I'm having on my 2018 Pacifica.

For the last few months I've noticed the Auto Stop is not working. The van runs just fine, no issues at all, but now it never shuts the engine off when coming to a stop. I've tried resetting to default settings on the screen, have toggled the button that has the "A" with the circle on it several times, and I've even tried driving with the A/C off to see if the A/C load is what is keeping the car from shutting down. It's as if the ESS feature is disabled or something.

Anyone else have the same issue? The only thing I haven't done is disconnect the battery for a few minutes to completely reset the computer or take it to the dealership (still have a while to go before the oil needs replacement)
Colder weather?? Engine, or transmission, not up to operating temperature (15 minutes of driving)?? What does your Owner Manual say?

Starting a cold engine is suppose to be one of the worst wear factors for it. Transmission shift pattern changes as the transmission fluid warms up.

Just sayin, I don't know anything about ESS, except sounds like it might help when lined up at a road construction project. The rule of thumb for idling is 10 seconds.

The AAA says a good rule of thumb is that you use a quarter of a gallon of gas for every fifteen minutes you idle. So, if you do that five days a week, you're burning about $4 worth of gas and getting zero miles per gallon.
Turn off your ignition if you're waiting more than 10 seconds. Contrary to popular belief, restarting your car does not burn more fuel than leaving it idling. In fact, idling for just 10 seconds wastes more gas than restarting the engine. Warm up your engine by driving it, not by idling.
Using the starter so much must shorten its life, I would think. Hate being in a line up in a rain storm and the starter doesn't work. I won't mention when it's -20C.

Just sayin.
 

·
Registered
Joined
·
1,026 Posts
I've done a search and can't find a previous thread discussing the same problem I'm having on my 2018 Pacifica.

For the last few months I've noticed the Auto Stop is not working. The van runs just fine, no issues at all, but now it never shuts the engine off when coming to a stop. I've tried resetting to default settings on the screen, have toggled the button that has the "A" with the circle on it several times, and I've even tried driving with the A/C off to see if the A/C load is what is keeping the car from shutting down. It's as if the ESS feature is disabled or something.

Anyone else have the same issue? The only thing I haven't done is disconnect the battery for a few minutes to completely reset the computer or take it to the dealership (still have a while to go before the oil needs replacement)
Hey Carlos,

We're sorry this is happening! We'd recommend having your vehicle brought into a dealer for an in-person inspection and diagnosis. If you need any additional assistance once your vehicle is there, just PM us any time!

Jennifer
Jeep Social Care Specialist
 

·
Registered
Joined
·
519 Posts
I wonder if the engine and oil are up to the operation temperatures. Usually these start/stop systems don't engage untill the engine is warned up, and there are a host of other parameters as well.

Generally speaking though, if this "feature" somehow disabled itself, I would not try to fix it. The fuel savings it provides will not pay for the extra strain on the battery and starter. I would keep it disabled.
 

·
--UNKNOWN MEMBER--
Joined
·
15,090 Posts
I wonder if the engine and oil are up to the operation temperatures. Usually these start/stop systems don't engage untill the engine is warned up, and there are a host of other parameters as well.
Good point, wonder how nobody else thought of that. :happy1:
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #8 ·
Thank you all for your replies and suggestions. I will take the car in for service because none of the factors should prevent it from turning off at stop lights. It used to turn off all the time when I would stop at a light... but now it doesn't turn off EVER, regardless of operating temperature, ambient temperature, drive length, or vehicle settings.
 

·
Super Moderator
Joined
·
27,919 Posts
Thank you all for your replies and suggestions. I will take the car in for service because none of the factors should prevent it from turning off at stop lights. It used to turn off all the time when I would stop at a light... but now it doesn't turn off EVER, regardless of operating temperature, ambient temperature, drive length, or vehicle settings.
Good luck with the Dealership and let us know what they found out. If you run into warranty issues, there's a Chrysler Cares Member on this Forum that can help you.

From: Chrysler Manual
What are possible reasons the engine does not autostop?
• The hood is ajar.
• The transmission is not in a forward gear.
• Driver’s door is open.
• Cabin heating or cooling is in process and an acceptable cabin temperature has not been achieved.
• Driver’s seat belt is unbuckled.
• The vehicle has not reached a speed of 5 mph (8 km/h) after the previous autostop.
• Many of these reasons are displayed as a STOP/START message in the instrument cluster display on the STOP/START screen. The system must be in the “STOP/ START READY” state to autostop. To access the STOP/START section of the instrument cluster display, use the display controls. Refer to the “Starting and Operating” section of your Owner’s Manual at www.chrysler.com/en/owners/manuals for a complete list of possible events in which the engine does not autostop.
 

·
Registered
Joined
·
10 Posts
ESS repair needs a dealer fix

Thank you all for your replies and suggestions. I will take the car in for service because none of the factors should prevent it from turning off at stop lights. It used to turn off all the time when I would stop at a light... but now it doesn't turn off EVER, regardless of operating temperature, ambient temperature, drive length, or vehicle settings.
I had the same issue with my brand new 2018 model. Tried all kinds of recommended fixes from this forum - finally agreed that a warranty should be used. It took them several days to perform the fix after checking both batteries and performing full load checks. They replaced the Intelligent Battery Sensor (IBS) and Performed Voltage Relearn Procedure which takes 3-days to complete -- yeah I know that is crazy but the manufacture's instructions to the dealer are very specific and requires some lengthy post-IBS replacement procedures. It words about 90% of the time now. Still fails to stop-start sometimes but eventually does. Not sure why the small battery needs to be constantly recharged if it sits for a night or two but that's what happens. So take your Pacifica in and let them do their thing. Good luck as this system will I think be a plague on all us Pacifica owners for years to come.
 

·
Registered
Joined
·
539 Posts
I had the same issue with my brand new 2018 model. Tried all kinds of recommended fixes from this forum - finally agreed that a warranty should be used. It took them several days to perform the fix after checking both batteries and performing full load checks. They replaced the Intelligent Battery Sensor (IBS) and Performed Voltage Relearn Procedure which takes 3-days to complete -- yeah I know that is crazy but the manufacture's instructions to the dealer are very specific and requires some lengthy post-IBS replacement procedures. It words about 90% of the time now. Still fails to stop-start sometimes but eventually does. Not sure why the small battery needs to be constantly recharged if it sits for a night or two but that's what happens. So take your Pacifica in and let them do their thing. Good luck as this system will I think be a plague on all us Pacifica owners for years to come.
Don't the 2018 Pacifica's have the off switch for that system on the dash?
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #13 ·
I had the same issue with my brand new 2018 model. Tried all kinds of recommended fixes from this forum - finally agreed that a warranty should be used. It took them several days to perform the fix after checking both batteries and performing full load checks. They replaced the Intelligent Battery Sensor (IBS) and Performed Voltage Relearn Procedure which takes 3-days to complete -- yeah I know that is crazy but the manufacture's instructions to the dealer are very specific and requires some lengthy post-IBS replacement procedures. It words about 90% of the time now. Still fails to stop-start sometimes but eventually does. Not sure why the small battery needs to be constantly recharged if it sits for a night or two but that's what happens. So take your Pacifica in and let them do their thing. Good luck as this system will I think be a plague on all us Pacifica owners for years to come.

Did they give you a loaner car while yours was getting serviced? The van is our only car (I work from home so we decided a long time ago that we were only going to have one car because that's all we need)
 

·
Registered
Joined
·
5 Posts
Discussion Starter · #15 ·
Turns out the issue was a bad battery. They tested both with some GR8 machine, and determined the secondary ESS battery was faulty. Got a new one under warranty and the system worked fine again after a few miles of driving (it had to recharge the ESS battery a little, even though it was new, before it started working again).
 

·
Registered
Joined
·
539 Posts
Turns out the issue was a bad battery. They tested both with some GR8 machine, and determined the secondary ESS battery was faulty. Got a new one under warranty and the system worked fine again after a few miles of driving (it had to recharge the ESS battery a little, even though it was new, before it started working again).
Thanks for the update, so many folks never report back what the fix was.
 

·
Registered
Joined
·
304 Posts
Sounds like a blessing.
I agree as well. Like many folks, I'm not a fan of ASS (auto stop/start) either. And if I buy a vehicle that has it, I'll be re-wiring its manual switch and/or installing 3rd party module to "default OFF" its button. To me, ASS should be "default OFF" and allow the person to manually turn it ON - if they want it. Or, use previous memory state - like my 2017 DGC's ECON button. re: If it was OFF state before I manually turned its engine OFF, then it remains OFF when I manually turn its engine back ON. Some things like ASS should NEVER be forced on the public.
 

·
Registered
Joined
·
3 Posts
Hello. I bought a 2019 Pacifica Limited. I purchased it in late September. I got the start stop disabled light too. I went 2 days ago ad they ran a diagnostic and said the small auxiliary battery was bad. They replaced it and now 2 days later its back. Does anyone have a clue what is going on with this stuff? When start stop is disabled some of the auto parking features are too. Its very frustrating especially it being brand new and all. Thanks in advance for any help!
 

·
Super Moderator
Joined
·
6,507 Posts
The screen in between your speedo and tach will tell you why the ESS isn't kicking in. There's a page that is devoted to the ESS system.

There are several reasons why it won't kick in, and it will state why:



If it says "Battery Charging" or "Battery Protection Mode" then you need to take it in:



I had the battery in my Cherokee replaced earlier this year, and I'm getting signs that it's going out again now.
 
1 - 20 of 39 Posts
Top