Within the last three weeks, the door locks, trunk automatic lock, engine shut off and NOW the cruise control all stopped working. I posted a few topics about the doors and the engine shut off and am in the process of tracking down these vacuum leaks. And now, all of a sudden my cruise doesn't work.

When it first started going out the gas pedal would abruptly pop up and the car would start to slow down. Now the cruise won't even turn on.

Are all the problems related to one vacuum leak issue? It seems like my dependable '82 300D has just all of a sudden been turned upside down. Any ideas on what's going on here?

Also, as I said in my previous topics. I've noticed a hissing noise coming from behind the push button panel for the heater. It stops hissing when i turn on the heat or when i rotate the climate control know to cold.