Bad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor on Mercedes-Benz SL500

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: 59,400 (16,200–110,000)
9 model years affected: 1994, 1995, 1996, 1997, more1998, 1999, 2000, 2001, 2002
12 people reported this problem
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problem details
2000 Mercedes-Benz SL500 16,200 mi,
Blower motor runs but shuts so after a few minutes
1998 Mercedes-Benz SL500 52,000 mi,
OK when purchased in March, 2013. One or two instances of blower malfunction (slow speed). Seems to be working at present (Aug 2013).