1998 Mercedes-Benz S420 Repair and Maintenance Costs
A guide to repairs, service, and maintenance costs for your 1998 Mercedes-Benz S420
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1998 Mercedes-Benz S420 ProblemsClosing Assist/Door Lock Issues Due to Pneumatic System Problems
Problems with the pneumatic system can cause closing assist and door lock issues.
One or more door windows may stop working due to a failed window regulator. Replacement of the failed regulator will be necessary to correct this concern.
A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since this sensor measures the actual amount of air entering the motor, when it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.
1998 Mercedes-Benz S420 QuestionsHow to remove radio (1 answer)
Need to take out radio for repair
All my windows & sunroof stop working. No bad fuses. Seats & mirrors work only with door open.