The rear SAM fires the stop lamps on the 164. LED’s don’t load the circuit properly so the SAM thinks there’s a malfunction and kills the circuit.....

Good to know.

The part that puzzles me most is that an LED lamp is in place on the driver's side and works beautifully, while an LED lamp on the right does not work at all.

Why the difference from side to side? Why does the SAM fire one LED lamp but not another identical lamp?

Thanks,
Tom

__________________
2016 E350 4matic wagon
2010 ML350 Bluetec
1995 E300D Gone, but not forgotten.