Join Date: Feb 2016
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I recently had the collision avoidance alert system message come up that it was in operable. Had to take it back to the dealer where they tell me the Vin number was not present in the module so they had to reprogram it. Probably something like that is happening to you
Agree with GLA415...OBD2 code reader is an excellent tool to own. Allows you to trouble shoot all DTCs/fault codes and a BIG advantage of that is you can go to the dealer/shop with info in hand so there can not have phooey blown at you. You can also clear DTCs such as an erratic CEL.
One thing to watch for is that the code reader is a CAN OBD2 type (The CAN Bus is an automotive bus developed by Robert Bosch. CAN is a serial bus protocol to connect individual systems and sensors as an alternative to conventional multi-wire looms. It allows automotive components to communicate on a single or dual-wire networked data bus up to 1Mbps.) Mercedes Benz was an earlier adopter of this communication protocol and thus the reader must be CAN compliant. Not all code reads are CAN compatible.