1998 Mercedes-Benz S420 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1998 Mercedes-Benz S420
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1998 Mercedes-Benz S420 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.
A refrigerant leak may develop from one or more of the following AC components: AC compressor, hose manifold for the compressor, or the evaporator core. The loss of refrigerant can cause poor AC performance. Our technicians tell us that proper leak diagnoses should be performed in order to determine the cause of any refrigerant loss.
Ports in the cylinder head related to the emissions air injection and EGR systems can clog; the cylinder head should be removed and the ports cleaned.
1998 Mercedes-Benz S420 QuestionsLow idle speed, and top deiving speed of 70 mph? (1 answer)
All my windows & sunroof stop working. No bad fuses. Seats & mirrors work only with door open.
park brake slips