Closing Assist/Door Lock Issues Due to Pneumatic System Problems on Mercedes-Benz 400SEL

Problem Description and Possible Solution

Problems with the pneumatic system can cause closing assist and door lock issues.

Problem Data
RepairPal Verified
Average mileage: 211,559 (178,000–271,000)
1 model year affected: 1993
4 people reported this problem
Viewing 1 - 2 of 2 comments
driverside door assist does not work,only driver side door will lock auto.
The Pneumatic close assist system is very problematic. I have repaired this at all 3 San Diego MB dealers with no success..