Lights
mercedes/r-class/2006-2012
Back right light stays one, all day all night even while the vehicle is on/off.
17
Submitted by Freddy Asencio on Aug 25, 2017.
Back right light stays one, all day all night even while the vehicle is on/off.
MBFanatic 1 year 3 months ago
Hi Freddy,
In most cases that is caused by a defective SAM module. You will need to scan the car with a advanced scanner that can read codes from the SAM modules. I belive the SAM unit will need to be coded to your car, so you can't swap it with a used one. Not 100% on this as it varies between MB models.
Let us know what you find out.