System malfunction

Tiny
JOE MILLER4
  • MEMBER
  • 2005 DODGE MAGNUM
  • 145,000 MILES
The left turn signal stays on, the wipers stay on, the headlights will not come off of bright, all this only happens when the key is on or the car is running when you turn the car off it all goes off. I have already replaced the multi function switch it stopped for the day then started the next day doing the same thing I have tried to reset the system by take both battery cables of letting them stay unhooked for 10 minutes and reconnecting them still doing the same thing.
Monday, September 21st, 2020 AT 2:47 PM

5 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
More then likely you have an issue with the front control module however, we need to confirm this rather then just replacing it. The best way to do this is start with checking for codes. I suspect to see loss of communication codes and possibly circuit codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

If there are no codes then we need to unplug the multi-function switch with the key on and see if the issue stops. If it does then your switch is shorted but I highly doubt this.

Let's start with this and go from there. Thanks
Was this
answer
helpful?
Yes
No
Monday, September 21st, 2020 AT 3:13 PM
Tiny
JOE MILLER4
  • MEMBER
  • 3 POSTS
The multi function switch was just replaced.
Was this
answer
helpful?
Yes
No
Tuesday, September 22nd, 2020 AT 9:12 AM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
Okay. Unfortunately that just points to what I suspect is the issue which is the FCM.

Let me know if you can get codes. Thanks
Was this
answer
helpful?
Yes
No
Tuesday, September 22nd, 2020 AT 6:43 PM
Tiny
JOE MILLER4
  • MEMBER
  • 3 POSTS
What is the front control module?
Was this
answer
helpful?
Yes
No
Tuesday, September 22nd, 2020 AT 7:44 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I attached the description and operation of the FCM and the process on how to replace it. Let me know what other questions you have about this.

If it were me based on this information, I would replace this and then retest the vehicle.
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Wednesday, September 23rd, 2020 AT 6:13 PM

Please login or register to post a reply.

Related Turn Signal Stay On Content