Help! Turned off car but only engine stopped all power stll on cant restart.

[jester7100]

Car stared and drove to work fine and when I turned it off it took 20 seconds for the motor to stop but nothing else turned off. Now it always thinks accessory power is on but if I try to start it just clicks a d says starting system fault. Wtf....

 

[Majestic]

Disconnect the battery for about 30 minutes and see if that fixes it.

 

[jester7100]

It does not 2 weeks they have e been trying to fix this

 

[Majestic]

Key fob battery?

 

[rubydist]

If you have had the battery disconnected for 30+ minutes, and as soon as you connect it up the car thinks that the accessories are on, then you have a module problem. There are several modules that are candidates. What are the codes that are set?

 

[SHOdded]

check codes, several prevent restart. if it does not crank, it could also be needing a new fob battery or new fob altogether. does it work with key in passive slot in center console?

 

[kryptto]

@jester7100

Get one of these: https://www.obdlink.com/products/obdlink-ex/

Then pay $12 and get https://forscan.org/

Plug it in and start the car and copy down the DTCs

More than l likely the keyless entry module - but that is a guess of course.


From AllData, potential components that could be your culprit that I would suspect.

The BCM (Body Control Module) controls the operation of the perimeter alarm. It monitors inputs from the RKE (Remote Keyless Entry) system (includes the keyless entry keypad), the power door lock system and the IA (Intelligent Access) system to determine when to arm the perimeter alarm.