Mercedes-Benz 420SEL Problem Report

Mercedes-Benz 420SEL Bad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor

(7 reports)

Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.

when I place in key and start to turn car on blower will come on sometime when I start the car blower goes off most of the time the blower does not come on at all. -
the blower motor was rewplaced 2 years ago and it quit working but i hear noise when i push buttons on air condition compressor is fine no air comes out of the vents -
you can hear it turn on but no heat or a/c come out of my vents -
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