Originally Posted by balwit

Can anyone here point me to a good diagnostic guide for sorting out the climate control system in my 300sd. Suddenly stopped working.
Also, if there was a good article describing the big picture functioning of the system that would help too. If I could find a way to jam the water valve to the on position I could at least use my car while I muster the courage to tear into the system.

Thanks.
John Balwit