Mercedes-Benz 400SEL Problem Report
Mercedes-Benz 400SEL Closing Assist/Door Lock Issues Due to Pneumatic System Problems
Problems with the pneumatic system can cause closing assist and door lock issues.
driverside door assist does not work,only driver side door will lock auto. - armyhooks
The Pneumatic close assist system is very problematic. I have repaired this at all 3 San Diego MB dealers with no success.. - Visitor
When the A/C is on the driver side back seat floor gets very wet, please help.