2015 Ram 1500 4x4 isn't working.
Asked by jay Dec 29, 2018 at 11:17 AM about the 2015 RAM 1500 Big Horn Crew Cab 4WD
Question type: Maintenance & Repair
Just bought this truck used. The 4x4 was working
but now it dont. Everytime it rains my truck goes
crazy I get a service shifter and transmission
warning. Also my dash lights speedometer radio
everything goes black! Then after awhile
everything goes back normal. I'm baffled
5 Answers
Any chance it might have been a flood vehicle? It sounds like it has an electrical or computer module issue.
No sir I purchased the car from Texas direct auto. I was thinking the same thing as I was looking underneath the truck to look for any loose wires or cracked caskets around the transmission area. I have the same issues when I go through a car wash
Usually with a Dodge Ram, if you see spurious electrical issues it may be related to the TIPM, or totally integrated power module. Google "Dodge Ram TIPM symptoms" for a list of all sorts of problems attributed to this module. It is an expensive part to replace, but before doing anything that drastic, just open yours up, and check the condition of the box. Make sure the TIPM is well seated, no abrasion to the wire harness, connector solidly in place, and most important, that no water is getting in there.
Forgot to add: check that all electrical grounds are good.
I would check all the plugs at the transmission and seal out moisture with dielectric grease.
