My '93 has one good seat heater (the passenger side of course) and one bad.
Symptoms are that the lights on the switch will flash very briefly when the switch is pressed, and then remain off. Switch and relays have been checked and are considered good (by my mechanic). So it sounds like the problem is probably in the seat itself. First, is this a reasonable conclusion? Second, what could be wrong (bad heating element in the seat?), and what's the process of repairing? Thanks! Lee '93 300D 2.5 180K