1990 Mercedes-Benz 350SDL Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 Mercedes-Benz 350SDL

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1990 Mercedes-Benz 350SDL Problems

Bad Switch/Blower Motor Resistor Assembly May Cause Inoperative Heater Blower Motor

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

Power steering hoses can develop leaks

Power steering hoses and components can develop leaks.

Improper Temperature Output From HVAC

One or more blend door vacuum actuators may fail resulting in the incorrect output temperature from the HVAC system. Failed actuators will require replacement to restore proper HVAC operation.

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