Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: Lighting Guides
- Dodge Ram: Lighting Problems Diagnostic
Guide to diagnose trouble and recommended solutions
Browse all: Lighting Guides
Front Control Module (FCM)
#21
Hi there i am having alight problem as well. My problem is that when my park lights are on soon as i put on my brakes they stay on. The real puzzle to all this is that after the truck seems to warm uo this problem goes away. i have already replaced the boards in the tail lights and the brake switch...Anyone have any ideas before i replace the next obvious which is the fcm
#22
#23
Thanks
Thanks to all of you for this thread. In the past I would have just taken the truck to the dealer but not in these times. Electrical problems are always the toughest especially when parts are not returnable.
I was driving home the other night and also lost tail and clearance lights. Tomorrow I will take out the fuse box and clean it and see if that works.
(2004 Ram 2500 4X4)
I was driving home the other night and also lost tail and clearance lights. Tomorrow I will take out the fuse box and clean it and see if that works.
(2004 Ram 2500 4X4)
#24
#25
Just an update. I cleaned out the fuse box connections and the FCM a few months ago. The headlight went out on me again. I currently have it at the stealership and they are racking me over the coals right now. Already spent $200 and they haven't told me anything I don't already know and posted on this forum. I will update once my wallet is fully drained by the mechanic.
#26
Close Out
The dealership got almost $900 to replace the fuse box. They told me I had to replace both the Fuse Box and FCM. I said to only replace the fuse box and we will see if the FCM is really bad. It wasn't bad or else it would have been $1200.
Question everything they want to do. Troubleshooting electrical can be a huge money pit. If they can't prove it (like actually test for it) you are on the hook for paying for all their guessing.
Question everything they want to do. Troubleshooting electrical can be a huge money pit. If they can't prove it (like actually test for it) you are on the hook for paying for all their guessing.
#27
#29
#30
The design is very poor!
Water splashes up from the front wheel well and constantly soaks, the bottom of the fuse box.
I have a mod in place. It's a plastic water shield underneath the fuse box. It deflects any water away from the bottom.
I hope this helps in the future?
Al.