Well my good friend and MB mechanic ,got up Saturday morning and decided to pull the head liner down on my 420sel,the mice had built a nest around the front courtesy light (just in front of the sun roof) and chewed thru the wires to one of the sensors ,not the vacuum tube ??? Anyhow he soldered the wires and the climate control is working again,we also found a nest uned the brake booster and under the battery compartment as mentioned in this forum,we cleaned them out ,and now with the climate contro system funtioning I have the sweet aroma of Mice pee in the car....again not to be out done ,I squirted in some "doggie" carpet cleaner that nuetralizes ammonia ....it worked like a champ.More mouse traps in the gargae this year .....and in the Benz....Thanks for your help,until next time.Happy fathers day ,Jim