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 ProblemsBad 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 and components can develop leaks.
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.
1990 Mercedes-Benz 350SDL Questionsfuel pump leaking (1 answer)
fuel pump on left side of engine has a leak
The pump is off the engine.