Eric79

Hey Everyone, Happy New Year!

I have a issue with my 2007 SL550. The drivers side seat control switch for the lumbar works great EXCEPT the pulse massage. No red light or anything. The passenger seat pulse massage works fine. I'm thinking the switch is bad considering the red light doesn't come on and everything else works.
Does anyone here have any suggesting that I could try?

Thank you

Rudeney

I'd guess it's the switch that is bad. You could remove it and bench test it. To get to it, remove the stowage cubby on the seat front - open it, and remove the screws holding it in place. Once you do that, you can unplug the switch panel and unclip it from behind.

Eric79

Thank you so much. I'm gonna try that. I'm assuming the switch isn't that expensive.

Rudeney

About $200:

https://www.mercedespartsdelivered.c...str=2158700010

Maybe it just has some debris in it. I'd try some compressed air or maybe electronics contact cleaner.