I am not sure that a failing vacuum pump will harm an engine -Or Will It?
I have glitchy door locks. My climate controls are starting to act up, as they work only on Defrost now, which I understand is the default for the system. However, the brakes work very well, still. I find this vacuum system to be the most perplexing thing about Mercedes, because it is new to me. What methods and procedures are available to troubleshoot and diagnose problems in the vacuum system? What tools are needed? How does one use a Vacuum Tester? How do I repair my door locks? What is happening to my Environmental Controls?
There! Lotsa Questions.