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

Problem Description and Possible Solution

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

Problem Data
RepairPal Verified
Average mileage: 156,500 (100,000–213,000)
2 model years affected: 1990, 1991
4 people reported this problem
Viewing 1 - 2 of 2 problem details
Blower is inoperative. checked blower fuse and it was ok.
Heating System does not work.