Problem Reports
Mercedes-Benz S420
Report: Closing Assist/Door Lock Issues Due to Pneumatic System Problems
Mercedes-Benz S420 Problem
Model Years Affected: 1994, 1995, 1996, 1997, 1998, 1999
Average Mileage: 136,438 mi (50,000 mi - 250,000 mi)
Problems with the pneumatic system can cause closing assist and door lock issues.
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kush420, 1998 Mercedes-Benz S420, 92,500 miRookie
My central locking system for the doors won't work and my trunk will not close.
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Visitor, 1995 Mercedes-Benz S420, 147,000 mi
Same problem, hear a sound from passenger side, but remote won't work for car locks and trunk.
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Visitor, 1995 Mercedes-Benz S420
Had the same problem occur about a month after I bought the car brand new. Called MB Roadside Assistance; they did something to override the security system. Car brought to dealer. Problem due to a leaking hose in the driver seat lumbar support which is connected to the same pneumatic system. Wow; the lumbar seat control caused the security system to prevent using the car on a dark, lonely parking lot after work late one evening! "The best engineered cars in the world"???
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Visitor, 1998 Mercedes-Benz S420, 50,000 mi
The rear doors do not use the neumatic final boost to close tight. The have to be slammed.
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s420, 1998 Mercedes-Benz S420, 68,000 miRookie
Power door locks stopped working
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donnichols, 1995 Mercedes-Benz S420, 156,000 miRookie
Power locks and trunk door open do not work
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Rookie
not able to lock my car with my key remote and my trunk wont shut like it should and handle wont come out anymore how do i reset it
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Visitor, 1997 Mercedes-Benz S420, 250,000 mi
closing assist doesn't work, But locks and trunk does. How do I find leaking hose?
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Visitor, 1997 Mercedes-Benz S420
problem with closing/assist on doors.
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Visitor, 1996 Mercedes-Benz S420, 160,000 mi
havent remeid problem yet
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