Dirtcal,
The mirror switch group is attached to the door control module. I would not
suggest spraying solvent into there. The door control module is removed by
carefully prying off the wood strip above the switches. This will expose
a row of torx 20 screws. You will then need to carefully pry off the door
pull handle outer cover. This will expose the last screw. Then the entire
plastic housing with your door control module can be pulled off the door panel.
Once you unclip the control module from the panel, you can access the mirror switch and wiring. I have the switch here in my hand and it is
PN# 2208211551. It is easy to get to.
Regards,
Dr.D

__________________
Dr.Diesel -
Shop Foreman
Master Guild Mercedes-Benz Technician.

Think the dealer is expensive? Do you know how much it costs to train a dealer tech? Or buy the required MB special tools to have on hand?