Give it another week, then buy some black tape.
How do I turn off the warning light on my Auto Stop/Start
I, too, have had issues with my Auxiliary battery on my 2018 Chrysler Pacifica. We didn't like the stop/start feature, and honestly, rarely are in a city where it would need to function, anyway (90% hwy driving). When seeking help from our dealer, he explained that since was turned it off all the time, the battery never got the opportunity to re-charge and so it died. They wanted $290 for the battery plus labor for exchanging it out, and my extended warranty didn't cover batteries. So we went home, and replaced it for $151. After the new battery was in place, the warning light did not go out. So I drove the 45 miles back to my dealer, asked them if they could turn it off. They said the battery would have to "learn" to charge itself, and would start working again soon. When it did so, the light would go out on its own. 200 miles later, light still on, and I am afraid I've wasted the money on my new auxiliary battery. Can anyone tell me if their warning light stayed on after the new battery was installed and if it did INDEED learn to recharge itself??
1 - 20 of 28 Posts
Check other threads (search for IBS.) There is something called the Intelligent Battery Sensor (?) that monitors them. It is not clear to me if both ICE and hybrids have them. In any case, maybe the store that replaced the battery did not reset it or properly reconnect it.
This system can cause a lot of issues. This thread (see post 41 at https://www.pacificaforums.com/threads/ess-battery-charging.31458/page-3#post-527687) also indicates that a failing main battery can also create problems -- something that we see a lot of. Both this and the thread below indicate to me that replacing the battery is not a casual DIY task.
This is a sample post from another thread: (post 211) Thie link should land you near it.
www.pacificaforums.com
That’s true, the Infernal battery system has screwed many DIY’s and caused new problems and extra expense.
BMW does not tolerate un-informed labor and has many “traps” for the DIY’er that are actually been normal practice for the last 100years - Stems from asking why are we still doing things the same old way?.. it’s 100year old knowledge after all.
The coding sets the alternator charge rate and voltage maximums. And as a battery ages it’s chemistry changes and is adapted to by the charge system. A 10yr old battery wont take 100% of the charge current it did when new and will accelerate the decay by overcharging it.
A new battery being treated like a 10yr old battery will abuse it from undercharging and cause sulfation damage.
The coding is critical to match the alternator output to the battery current acceptance. A small 60aH will be overcharged if it’s set for 105aH because the battery will not accept the current supplied and will cook the battery.
The AGM/non AGM marker changes its aging parameters and cold charge voltages. Flooded batteries are capable of handling 16v cold but AGM limits it to 15v.
It makes sense, but doesn’t help if you don’t have the tools. But TBH you can simply download a phone based OBD app that can reset this stuff and is not “dealer only”.
Just need to know about it, or your screwed! Much like many BMW innovations.
---------
Good luck. It is interesting that your dealer had the battery in stock. There are a lot of posts about supply issues.
This system can cause a lot of issues. This thread (see post 41 at https://www.pacificaforums.com/threads/ess-battery-charging.31458/page-3#post-527687) also indicates that a failing main battery can also create problems -- something that we see a lot of. Both this and the thread below indicate to me that replacing the battery is not a casual DIY task.
This is a sample post from another thread: (post 211) Thie link should land you near it.
Dead battery adventures
The van was standing unused for about 5 days. This morning I found it completely dead. Unlocked it with a key, opened the sliding door and went to check the battery in the rear. Soon realized that the accessible battery terminal is ground, and remembered that there is a post in the fuse block...
www.pacificaforums.com
That’s true, the Infernal battery system has screwed many DIY’s and caused new problems and extra expense.
BMW does not tolerate un-informed labor and has many “traps” for the DIY’er that are actually been normal practice for the last 100years - Stems from asking why are we still doing things the same old way?.. it’s 100year old knowledge after all.
The coding sets the alternator charge rate and voltage maximums. And as a battery ages it’s chemistry changes and is adapted to by the charge system. A 10yr old battery wont take 100% of the charge current it did when new and will accelerate the decay by overcharging it.
A new battery being treated like a 10yr old battery will abuse it from undercharging and cause sulfation damage.
The coding is critical to match the alternator output to the battery current acceptance. A small 60aH will be overcharged if it’s set for 105aH because the battery will not accept the current supplied and will cook the battery.
The AGM/non AGM marker changes its aging parameters and cold charge voltages. Flooded batteries are capable of handling 16v cold but AGM limits it to 15v.
It makes sense, but doesn’t help if you don’t have the tools. But TBH you can simply download a phone based OBD app that can reset this stuff and is not “dealer only”.
Just need to know about it, or your screwed! Much like many BMW innovations.
---------
Good luck. It is interesting that your dealer had the battery in stock. There are a lot of posts about supply issues.
I was looking for a nice ODB reader that was Bluetooth that would work on iPhone / iPad but didn't really find much so I bought the BlueDriver odb reader for $99 and I am very happy with it. I can scan and reset allot more things with it than a cheap reader.
"Buy Nice or buy twice, buy once cry once" as they say.
"Buy Nice or buy twice, buy once cry once" as they say.
This is total hogwash. The system keeps the battery charged whether ESS is used or not.When seeking help from our dealer, he explained that since was turned it off all the time, the battery never got the opportunity to re-charge and so it died.
The only way to get the warning to turn off is to fix the problem. We just started getting the Start Stop unavailable/Service Start Stop messages. I was able to retrieve the following stored trouble codes:
U0418 - Implausible Data Received From Brake System Control Module 1
U0432 - Invalid Data Received From Multi-Axis Acceleration Sensor Module
P00FD - Battery -B- State Of Charge Performance
I found a TSB that mentions a PCM update that addresses multiple issues (some of which are related to ESS) and contains the codes I am getting. I suspect the OP may be having a similar issue. The fix according to the TSB is to flash the latest software to the PCM. I plan on taking the van back to the dealership later this week to get ours fixed. Our van is just out of warranty so I'm hoping they'll either perform the fix in good faith or charge me a discounted rate to apply the update.
U0418 - Implausible Data Received From Brake System Control Module 1
U0432 - Invalid Data Received From Multi-Axis Acceleration Sensor Module
P00FD - Battery -B- State Of Charge Performance
I found a TSB that mentions a PCM update that addresses multiple issues (some of which are related to ESS) and contains the codes I am getting. I suspect the OP may be having a similar issue. The fix according to the TSB is to flash the latest software to the PCM. I plan on taking the van back to the dealership later this week to get ours fixed. Our van is just out of warranty so I'm hoping they'll either perform the fix in good faith or charge me a discounted rate to apply the update.
NUMBER: 18-001-19 REV. C
GROUP: 18 - Vehicle Performance
DATE: June 12, 2019
This bulletin is supplied as technical information only and is not an authorization for repair. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise, without written permission of FCA US LLC. This bulletin supersedes Service Bulletin 18-001-19 REV. B, dated May 01, 2019, which should be removed from your files. All revisions are highlighted with asterisks and include additional symptom/condition, new RRT number, Inspection and LOP. This Service Bulletin is also being released as Rapid Response Transmittal (RRT) 19-043, dated June 12, 2019. All applicable Sold and Un-Sold RRT VINs have been loaded. To verify this RRT service action is applicable to the vehicle, use VIP or perform a VIN search in DealerCONNECT/Service Library. All repairs are reimbursable within the provisions of warranty.
SUBJECT: Flash: Powertrain Control Module (PCM) Updates
OVERVIEW: This bulletin involves reprogramming the PCM with the latest available software.
MODELS: 2018 (RU) Chrysler Pacifica
NOTE: This bulletin applies to vehicles within the following markets/countries: North America, LATAM, EMEA and APAC.
NOTE: This bulletin applies to vehicles equipped with a 3.6L V6 24V VVT Engine Upg I W/ESS (Sales Code ERC) or with a 3.6L V6 24V VVT Engine (Sales Code ERF).
SYMPTOM/CONDITION: Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following DTCs have been set:
• P06E9 - Engine Starter Performance.
• U0418 - Implausible Data Received From Brake System Control Module 1.
• U0432 - Invalid Data Received From Multi-Axis Acceleration Sensor Module.
• P06EF - Engine Restart Performance. Software update will help reduce engine crank time, setting a false P06EF.
• P00FD - Battery -B- State Of Charge Performance.
• C2222-68 - Improper Powerdown - Event Information.
• P0607-00 - ECU Internal Performance - ESM.
• U0402-00 - Implausible Data Received From TCM.
• U145D-00 - Implausible Data Received From TCM On D-PT.
• U1465-00 - Implausible Driver Shift Request Signal Received.
• P0456 - EVAP System Small Leak.
• P258B - Electronic Vacuum Pump Performance.
• P0503 - Vehicle Speed Sensor 1 Erratic.
Customer may also experience one or more of the following:
• Engine Start Stop (ESS) disabled during an autostart, requiring the driver to key restart (ERC Sales Code only).
• ESS message appears in the Electronics Vehicle Information Center (EVIC) “Stop/Start Restart Required Fault Detected” (ERC Sales Code only).
• Customer or technician may be unable to read data information from the OBDII connector when using a generic scan tool (ERF Sales Code, APAC only).
• Rough Idle.
• Vibration felt in the seat at Idle.
• Idle undershoot, just before a complete stop.
This software release also includes the following software enhancements:
• Prevent the ESS Aux battery from drying out on vehicles driven in hot regions and conditions.
• AGS controls modifications to reduce engine compartment temperatures.
• Limp home RPM correction in a double pedal fault scenario.
• Improvements to address an occasional engine stall during a panic brake situation from 45 kph (28 mph) on slippery road conditions.
DIAGNOSIS:
Using a Scan Tool (wiTECH) with the appropriate Diagnostic Procedures available in DealerCONNECT/Service Library, verify all related systems are functioning as designed. If DTCs or symptom conditions, other than the ones listed above are present, record the issues on the repair order and repair as necessary before proceeding further with this bulletin. If a customer’s VIN is listed in VIP or your RRT VIN list, perform the repair. If any vehicle not on the VIN list exhibits the symptom/condition or DTC, perform the repair.
REPAIR PROCEDURE:
NOTE: The Transmission Control Module (TCM) must be updated to the latest available software at the conclusion of this repair procedure. Refer to all applicable published
service bulletins for detailed repair procedures and labor times regarding updating the TCM software.
NOTE: Install a battery charger to ensure battery voltage does not drop below 13.2 volts. Do
not allow the charging voltage to climb above 13.5 volts during the flash process.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
1. **Does the PCM control module have the latest software already installed?
• YES>>> This bulletin has been completed, use inspect LOP (18-19-06-9M) to close the active RRT.
• NO>>> Proceed to Step 2.**
2. Reprogram the PCM with the latest software. Detailed instructions for flashing control modules using the wiTECH Diagnostic Application are available by selecting the application’s “HELP” tab.
3. Clear any DTCs that may have been set in any modules due to reprogramming. The wiTECH application will automatically present all DTCs after the flash and allow them to be cleared.
4. Verify the TCM is programmed with the latest available software. Refer to all applicable published service bulletins for detailed repair procedures and labor times regarding updating the TCM software.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No / Description / Skill Category / Amount
18-19-06-9M / Module, Powertrain Control (PCM) - Inspect (0 - Introduction) / 1- Engine Repair and Performance / 0.2 Hrs.
18-19-06-9X / Module, Powertrain Control (PCM) - Inspect and Reprogram (0 - Introduction) / 1 - Engine Repair and Performance / 0.2 Hrs.
NOTE: The expected completion time for the flash download portion of this procedure is approximately 2 minutes. Actual flash download times may be affected by vehicle
connection and network capabilities.
FAILURE CODE:
The dealer must choose which failure code to use depending on if this is a Rapid Response Transmittal (RRT) or Service Bulletin.
• The “RF” failure code is required for essential module flash/reprogramming and can only be
used after confirmation that the VIN is included on the RRT.
• The failure code “RF” (Required Flash) can no longer be used on Service Bulletin flashes. The “RF” failure code must be used on an RRT.
• If the customer’s concern matches the SYMPTOM/CONDITION identified in the Service Bulletin, failure code CC is to be used. When utilizing this failure code, the 3C’s must be supplied.
RF Required Flash - RRT
CC Customer Concern
I came across this while searching for something else and thought I'd post an update. The dealership did end up applying the update in the TSB to our van, and all the codes disappeared. It's been over a year and they haven't come back since the update.
Question. My car completely shut down while sitting at a light and when I powered it up again, the A with a circle around it and exclamation mark light came on. I have read in the forums on this page, it seems to be a common issue with the auxiliary battery. I took it to 3 different places who all told me both batteries testes good (with one place saying it tested good but low). We have also had some issues with the passenger side door not opening. Thoughts? Do we think they are related? Do you think it is most likely the auxiliary battery? I have an appt with Chrysler on Friday but have grappled with taking a risk and just replacing the auxiliary battery and attempting to save myself $100.
When you say "shut down" I assume you do not mean the normal ESS engine stop with all other items continuing (radio, fans, etc.)Question. My car completely shut down while sitting at a light and when I powered it up again, the A with a circle around it and exclamation mark light came on. I have read in the forums on this page, it seems to be a common issue with the auxiliary battery. I took it to 3 different places who all told me both batteries testes good (with one place saying it tested good but low). We have also had some issues with the passenger side door not opening. Thoughts? Do we think they are related? Do you think it is most likely the auxiliary battery? I have an appt with Chrysler on Friday but have grappled with taking a risk and just replacing the auxiliary battery and attempting to save myself $100.
If you put your year, trim and significant options in your signature it helps others on the forum focus their advice.
First - are you still under the original 36/36 warranty. If so, there is no charge for a battery replacement. I understand that the extended warranty does not cover batteries.
If you look at other threads, for the batteries to be tested properly, they must be disconnected from each other.
Consensus from other threads:
1) If a battery is completely drained, it never regains full functionality and has a shortened life
2) If one of the two batteries is bad, it can pull down and discharge the other battery and both need to be replaced.
3) Failing batteries cause all kinds of strange warning lights and behavior
Good luck. Let us know your outcome.
does the 2020 hybrid have this feature at all?
No, only the non-hybrid models have this feature. Although, the hybrid models come with the same crappy 12V main battery. There are lots of threads that discuss this already.does the 2020 hybrid have this feature at all?
Great! Thats one less thing to be worried about on the hybrid models then. Given the amount of stop and go traffic we have during peak hours (non-covid times), i have always found this feature more of a nuisance.
I have the exact same problem! I hate this van! I hate the Chrysler service center! Never buying another Chrysler ever!I, too, have had issues with my Auxiliary battery on my 2018 Chrysler Pacifica. We didn't like the stop/start feature, and honestly, rarely are in a city where it would need to function, anyway (90% hwy driving). When seeking help from our dealer, he explained that since was turned it off all the time, the battery never got the opportunity to re-charge and so it died. They wanted $290 for the battery plus labor for exchanging it out, and my extended warranty didn't cover batteries. So we went home, and replaced it for $151. After the new battery was in place, the warning light did not go out. So I drove the 45 miles back to my dealer, asked them if they could turn it off. They said the battery would have to "learn" to charge itself, and would start working again soon. When it did so, the light would go out on its own. 200 miles later, light still on, and I am afraid I've wasted the money on my new auxiliary battery. Can anyone tell me if their warning light stayed on after the new battery was installed and if it did INDEED learn to recharge itself??
Just had that light come on this morning right at startup. Drove it for 20 minutes, stopped at Costco for gas and upon startup the light was gone.
I credit the infinite powers of Kirkland!
I credit the infinite powers of Kirkland!
Recently my Mom's van had this issue, which I would think many of her 2018 vintage would start dealing with about now. I went through the hassle (by reading these forums) and watching YT, to figure out that the aux battery was probably the issue. Used a handy battery analyzer to determine that it was dead, while interestingly enough, it took the autozone guy two attempts to read it to also confirm it was dead. Due to it being an odd sized battery, it was a hassle to actually find a place in the BHM metro where we could even get one. Main battery is fine. Frustratingly enough, my parents drove the van around for the past month and the warning light never turned off. They took it to the chrysler dealer (for among other issues needing the sliding door lubed as well). The dealer flashed something and charged them $170, and the light went off. What I cannot understand is why the IBS sensor did not complete it's relearn process automatically after the past month's driving. Needless to say, this seems like a poorly engineered system since it requires a $300 service charge (if you pay for them to replace the battery and flash the software) if one isn't willing to run their own OBDII commands or spends countless hours pouring over threads like this.
Per this post from the dead battery adventures forum, it seems like it should have re-learned at some point without a required intervention from anyone....
When the IBS is powered up for the first time or is powered after a power disconnection, it enters a “recalibration” phase, where the IBS must recognize the type of battery and its characteristics and state. In this phase the tolerances on the state functions (SOC, SOF) are greater than in normal working condition. When IBS is disconnected from the battery, the device loses its stored memory. When power is restored, the IBS starts a relearn process. Until the relearn process is complete, accurate battery state information is unavailable to other vehicle systems. The IBS relearn process requires five normal, operator initiated starts with at least four hours normal or more during cold ambient conditions of engine off time between each start. Usually, the process takes a few days of vehicle operation to complete. Remember, the relearn process is restarted every time power is reconnected to the IBS.
If the IBS is faulty it cannot be serviced, it must be replaced.
Per this post from the dead battery adventures forum, it seems like it should have re-learned at some point without a required intervention from anyone....
When the IBS is powered up for the first time or is powered after a power disconnection, it enters a “recalibration” phase, where the IBS must recognize the type of battery and its characteristics and state. In this phase the tolerances on the state functions (SOC, SOF) are greater than in normal working condition. When IBS is disconnected from the battery, the device loses its stored memory. When power is restored, the IBS starts a relearn process. Until the relearn process is complete, accurate battery state information is unavailable to other vehicle systems. The IBS relearn process requires five normal, operator initiated starts with at least four hours normal or more during cold ambient conditions of engine off time between each start. Usually, the process takes a few days of vehicle operation to complete. Remember, the relearn process is restarted every time power is reconnected to the IBS.
If the IBS is faulty it cannot be serviced, it must be replaced.
That's my problem is that I have the error appear first thing in the morning on start up. Simple restart immediately fixes the error message. I've learned how to drive down the road and restart the van at the same time.Just had that light come on this morning right at startup. Drove it for 20 minutes, stopped at Costco for gas and upon startup the light was gone.
I credit the infinite powers of Kirkland!
I know this is an older thread maybe anyone can chime in I've got the 2018 with ESS and a brand new main battery 6 months old and I don't know how old the smaller battery is Maybe original but I just now today got an idiot light on with ESS disabled, if I change out the smaller battery with the light just go out? Thank you😪I, too, have had issues with my Auxiliary battery on my 2018 Chrysler Pacifica. We didn't like the stop/start feature, and honestly, rarely are in a city where it would need to function, anyway (90% hwy driving). When seeking help from our dealer, he explained that since was turned it off all the time, the battery never got the opportunity to re-charge and so it died. They wanted $290 for the battery plus labor for exchanging it out, and my extended warranty didn't cover batteries. So we went home, and replaced it for $151. After the new battery was in place, the warning light did not go out. So I drove the 45 miles back to my dealer, asked them if they could turn it off. They said the battery would have to "learn" to charge itself, and would start working again soon. When it did so, the light would go out on its own. 200 miles later, light still on, and I am afraid I've wasted the money on my new auxiliary battery. Can anyone tell me if their warning light stayed on after the new battery was installed and if it did INDEED learn to recharge itself??
It's possible. Especially if it's the original aux battery. A bad aux can kill a main battery quickly as well. I would get it change ASAP and see if that helps. Also if you can have someone scan the van for any error codes as well. It could be something else triggering the auto start stop to disable.I know this is an older thread maybe anyone can chime in I've got the 2018 with ESS and a brand new main battery 6 months old and I don't know how old the smaller battery is Maybe original but I just now today got an idiot light on with ESS disabled, if I change out the smaller battery with the light just go out? Thank you😪 View attachment 51592
Yes I think I'll take it to Autozone tomorrow and see if there are any error codes and see if it's discharged first but hopefully it's just the Aux battery is bad.. I'm I'm thinking it's the original from '18 and I know Chrysler batteries aren't that great to begin with ..It's possible. Especially if it's the original aux battery. A bad aux can kill a main battery quickly as well. I would get it change ASAP and see if that helps. Also if you can have someone scan the van for any error codes as well. It could be something else triggering the auto start stop to disable.
Make sure if they test the batteries that they test them individually and do not just connect the load to both batteries to test it. The result won't be accurate.Yes I think I'll take it to Autozone tomorrow and see if there are any error codes and see if it's discharged first but hopefully it's just the Aux battery is bad.. I'm I'm thinking it's the original from '18 and I know Chrysler batteries aren't that great to begin with ..
1 - 20 of 28 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
2017+ Chrysler Pacifica Minivan Forums
We’re a forum community dedicated to Chrysler Pacifica owners & enthusiasts. Come join the discussion about upgrades, towing capacity, reliability, and more!
Full Forum Listing
Top Contributors this Month
View All
Ducksface
145 Replies
M0Par
113 Replies
CANADAHYBRIDGUY
112 Replies
