Bad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor on Mercedes-Benz 500SL

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: 138,500 (77,000–200,000)
4 model years affected: 1990, 1991, 1992, 1993
9 people reported this problem
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problem details
1991 Mercedes-Benz 500SL 77,000 mi,
blower does not work power gowing in and out
1993 Mercedes-Benz 500SL 200,000 mi,
blower dead because of resistor burnout
Same problem. went on Ebay and got both. Im good now.