I have a 2001 ML320, and the shop that has it is stumped as to why the problem is occuring, they have scanned it, and found this. First, they cleared the codes, and found the B1041 code as Can communication trans to track control system faulty, then another code, P2068, P20CC rough rode detection signal, P2036 Incorrect can message from control unit, and B1470 as well.

The problem came as my wife was driving it, the speedo went dead, several warning lights came on, but she could still drive it fine. It happens on and off sometimes it happens several times, corrects itself, drives fine, then happens again, the shop is not for sure what to fix, and the next deal is the MB dealer, PLEASE, any help!

Thanks

 

Go to the fuse box in the drivers footwell, with the cover off there is a ground around the edge just off the opening (a nut with a few brown wires under it). Check it and make sure the nut is tight. I've seen this ground loose before and you get traction codes, steering angle codes, can codes, rough road codes...................

 

Sorry,, thats the fuse box in the passenger footwell, the right side of the car on the kick panel.