I had the same problem on my wife’s Pacifica I wound up changing both main and Aux batteries the auto stop start still did not work I was told by the dealer just to drive the car and the auto start stop would eventually work because the batteries had to equalize whatever that means but eventually it did work.
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“Stop/Start unavailable, service stop/start system” 2019 Ram 1500 Laramie
- Thread starter drogers1188
- Start date
Update: the dealership fixed it for me last week. Replaced the ground cable and carpet. The truck is running normal. No error messages or start/stop failure.
The system voltage clearly behaves differently. It’s now very stable around 14V. Previously, it will charge to above 15V during regen(brake) and goes down to 14V.
The system voltage clearly behaves differently. It’s now very stable around 14V. Previously, it will charge to above 15V during regen(brake) and goes down to 14V.
Scrambler
Active Member
Is the terminal that shorted out on the driver or passenger side? I'm asking so I don't have to pull up all the carpet searching for it
6of36
Spends too much time on here
He stated rear passenger.
Scrambler
Active Member
I am having the same issue and would like to repair & replace this myself.
@youngjkin, if the dealer repair is successful, can you post a photo of your work order so we can see the replacement p/n's and any other pertinent information?
Has anyone done this repair themselves?
Does anyone know of a TSB for this issue?
@youngjkin, if the dealer repair is successful, can you post a photo of your work order so we can see the replacement p/n's and any other pertinent information?
Has anyone done this repair themselves?
Does anyone know of a TSB for this issue?
6of36
Spends too much time on here
Wild Electrical issues fixed
I was experiencing the following issues. Will no longer start with door open Error message : service electronic stability control Error message : Service electronic shifter Shifter lights out ((P)) error on dash Error : Service Shifter I thought it might be related to my rear window leak...
5thgenrams.com
This is all ground points. His was under the right rear seat.
I have a 2022 RAM1500 Limited and am getting random Check Engine lights coming on with the stop/start service unavailable message happening fairly often - but not consistently. I've taken it to the dealer multiple times, and they say they can't find anything. Of course, the problem doesn't happen when at the dealer but would think they can check the logs to find the problem. Any other thoughts on what could be causing this?
Darksteel165
Legendary member
Whats the check engine light say?
I assume ant engine code will disable start/stop as a failsafe.
I assume ant engine code will disable start/stop as a failsafe.
Bin01123
Active Member
Thanks for this thread. I just got the same message in my 2021 Ram 1500 Limited. I haven't taken it to the dealer but I'll be checking under the rear passenger seat after I run my scan tool.
Bin01123
Active Member
Just got mine back from the dealership and they said I needed a 12V battery. The issue continued days after a got home even with a new battery. After I received my code reader, it showed I have a bad hood switch as well. I replaced it today and I'm hoping that was the issue.
Bin01123
Active Member
***UPDATE***
The deanship was wrong. They said I needed a 12V Battery and the reason I kept getting the Start/Stop error message was because I didn't drive the truck enough. That was incorrect. Once I was able to read the error code when I got home, it showed code number P152E which is a "Engine Hood Switch 2 circuit high" After doing some digging, I learned this issue happens on other Chrysler automobiles and it was the hood switch that needs to be replaced. The part number was 68541273aa and the part was $20. (Please confirm it fits for your truck if you are doing this) Once I replaced this my issue went away and logically it makes sense to me. If the truck thinks the hood is open or has a problem, its going to want to try and change to state of the truck in some areas.
I used this video below as a reference for how to do this and it's pretty much the same for our trucks. I would try this first if you have this problem before buying a new 12V battery as this seems like a common problem for newer Chrysler vehicles. Hope this helps. @Darksteel165 @W Six @RamCares
The deanship was wrong. They said I needed a 12V Battery and the reason I kept getting the Start/Stop error message was because I didn't drive the truck enough. That was incorrect. Once I was able to read the error code when I got home, it showed code number P152E which is a "Engine Hood Switch 2 circuit high" After doing some digging, I learned this issue happens on other Chrysler automobiles and it was the hood switch that needs to be replaced. The part number was 68541273aa and the part was $20. (Please confirm it fits for your truck if you are doing this) Once I replaced this my issue went away and logically it makes sense to me. If the truck thinks the hood is open or has a problem, its going to want to try and change to state of the truck in some areas.
I used this video below as a reference for how to do this and it's pretty much the same for our trucks. I would try this first if you have this problem before buying a new 12V battery as this seems like a common problem for newer Chrysler vehicles. Hope this helps. @Darksteel165 @W Six @RamCares
2019 Ram 1500 Laramie with 40k on it.
Pulled our camper to the campground and the next day it started showing start/stop service error. Seemed to also have a rough misfire and the check engine light was flashing. Well got it toed in over an hour to a shop just to be told my mechanic tapped on injector #4 and it solved all the issues. The injector was stuck causing a bad misfire. Just grab anything and give every injector a tap. Or run a code and figure out which one specifically
Pulled our camper to the campground and the next day it started showing start/stop service error. Seemed to also have a rough misfire and the check engine light was flashing. Well got it toed in over an hour to a shop just to be told my mechanic tapped on injector #4 and it solved all the issues. The injector was stuck causing a bad misfire. Just grab anything and give every injector a tap. Or run a code and figure out which one specifically
Willwork4truck
Spends too much time on here
I had the message and amber warning light for 1 day. The very next morning at startup it disappeared. When I had the truck serviced a couple days later the service writer had said that it could be one of many issues and diagnosing it wasn’t easy.
