1997 Mercedes-Benz S420 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1997 Mercedes-Benz S420
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1997 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.
1997 Mercedes-Benz S420 QuestionsDriver side headlight won't turn off (1 answer)
The driver side light stays on even if the car is off
How ca I fix this to get cold air out the side vents. I checked the fuses and they are good. Even when weather is cold they still blow hot air so is not a vent flow problem.
For getting the drivers door panel off to gain access to the window regulator?