Cleaning a seat switch
 

Well, I'm about to tackle the dirty seat switch contacts malady that seems to plague 90% of older model owners. I searched and found lots of great pointers, but this is a great pictorial on the step-by-step. Believe it or not, it comes from a Range Rover owner, who claims that these use MB switches, but the Mercedes ones are way cheaper, like $85.00 versus $125.00!
http://www.rangerovers.net/repairdetails/seatcontrols.htm
Anyway, hope this helps someone...or at least it's a good heads-up on what's involved. :)