Mercedes-Benz 300SD Problem Report
Mercedes-Benz 300SD Closing Assist/Door Lock Issues Due to Pneumatic System Problems
Problems with the pneumatic system can cause closing assist and door lock issues.
the doors will close with the assist when I pull fuse and trunk and reset it it works for a while - Visitor
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 - Visitor
I have not done a compression test, but the head gasket is suppossed to be blown. Now my questi...