I have a 94 S500, and am having a problem with the power headrests on the rear seats. They work intermitantly from either the front or rear switches. You can hear the relays working back there, and sometimes
they both go up just like they should, other times one comes up and the other stays down,
and sometimes they both stay down. They generally go back down as they should.
I would guess it is a problem with the relays, but I don't know how to get to them to check them (thinking maybe I can get away with just cleaning the contacts) or replace them. Any guidance or help on how to fix these??