My '80 300D has developed serious climate control (and other) problems since I replaced the CC servo. I replaced it because it was killing my battery. Now my LO/HI/BI does not work. The A/C only comes on with DEF and then it blows hot. My engine does not shut off right away after I turn the ignition off. The door locks will not all unlock normally.
Do I have a vacuum, vacuum/electrical, vacuum/electrical/AC problem? Please help.