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Mercedes-Benz 300SD Problems

Closing Assist/Door Lock Issues Due to Pneumatic System Problems on Mercedes-Benz 300SD

Problem Description and Possible Solution

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

(4 people reported this problem)

Mercedes-Benz 300SD Vehicles With This Problem

RepairPal Verified
Average mileage: 310,000 (310,000–310,000)
2 model years affected: 1992, 1993
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Brake problem? Or maybe a faulty head gasket cylinder?
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Viewing 1-2 of 2 comments
Close assist never worked since I had the car. We are in the process of replacing all of the components including the two vacuum pumps