Bad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor on Mercedes-Benz 300SL

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

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Average mileage: 96,666 (67,000–115,000)
4 model years affected: 1990, 1991, 1992, 1993
7 people reported this problem
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problem details
1991 Mercedes-Benz 300SL 108,000 mi,
Blower Motor stopped working
1990 Mercedes-Benz 300SL 67,000 mi,
mine stopped