cruise control
 

My cruise control has been acting strangely lately. when it turns on it disengages once i hit a hill or sometimes cuts off for no reason. other times it just doesnt respond. whats going on?is the cruise control a mechanical or electrical system. under my hood there is a nuclear reactor looking thing that is the cruise control mechanism.

Good call i keep forgetting about the search function. any way i feel that the MB AC and cruise control are the among some of the worst in the world. they just cant get it right.
thanks