Problem Reports
Mercedes-Benz 420SEL
Report: Bad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor
Mercedes-Benz 420SEL Problem
7 Reports
Model Years Affected: 1990, 1991
Average Mileage: 179,100 mi (145,000 mi - 230,000 mi)
Verified
Other than a defective motor, a bad switch or blower motor resistor assembly can cause an inoperative heater blower motor.
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Visitor, 1990 Mercedes-Benz 420SEL, 155,000 mi
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.
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joesalem8, 1990 Mercedes-Benz 420SEL, 145,000 miRookie
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
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Visitor, 1991 Mercedes-Benz 420SEL, 175,500 mi
you can hear it turn on but no heat or a/c come out of my vents
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