I Have a 1994 S320 Mercedes Benz 140 and the climate control regulator has gone bad ,can someone tell me were it is located? and how difficult is it to change this item,please explain.

 

The regulator is on the blower motor, which is on the right side under the hood by the fire wall. you need to remove the large black cover piece that goes across the back of the engine compartment. watch for vacuum lines on the right side and a sensor on the left side.

 

I have same problem, can any one help please.....95 s320