pgf50

both of my 04 CLK 500 shoulder/seat belt positioners have stopped working. Not both at the same time, however. they stopped working a few months apart. Has anyone had a similar problem? Would anyone have a fix for this. I am hoping it is just something simple. Car only has 21K miles on it, but is out of warranty
Pete

Rudeney

So the seat belt presenters don't operate at all? Any sounds from them, or just nothing? Any messages on the MFD (like an open door)? If no sounds or messages, it's likely that they both have failed, as odd as that would be. Basically, the extenders won't operate if the door is open or if the seat belt is already connected. Faults in those circuits could cause a failure.

pgf50

No, no sounds or messages. is there one fuse for both? or do the operate off separate circuits? They failed at different times.

Rudeney

No fuses - they are controlled electronically. It is odd that you hear no sound. When they fail mechanically, they usually make grinding noises.