Wierd it might just fixed itself on my truck. Drove it all weekend and the messages are gone and brakes are working as normal. Fingers crossed.Same problem: '13 Ram 1500
"Service Trailer Brake System"
"Service Antilock Brake System"
Mine happened as soon as I put the truck in 4wd when is snowed this pass weekend. It stayed on while in 4wd (about 4 days) Its been on/off ever since. 50/50.
I got the same message last winter when it snowed as well. But this time the code decided to stick around. What I got from reading the forums:
-It could be the trailer brake harness. Corrosion or dirty connectors.
(I read somewhere that the trailer wires are connected to the abs. So you cant have one light without the other.)
-Some say its a speed sensor on one of the wheels.
(Im not too sure how to test for that or which wheel to test)
-I have also read it is very common on trucks with level kits and over sized tires. (35x12.5x20 in my case)
But given that its a common problem on lifted rams, I have yet to see a fix.
Any insight from anyone on how to start troubleshooting?
4wd is disabled when the lights come on, unless you got lucky like me and get it in 4x4 before the lights turn on.. then as long as you dont take it out of 4x4, it will stay in 4wd.