I have been having problems with my cruise control intermittantly. The unit will quit functioning while going down the road for no apparent reason. It may or may not re-engage when I either push the speed increase button or the resume button. It seems to be worse the warmer the weather gets. When I too k it in to the dealer this morning (temp was 63) it worked for a bit and then quit. When the temp is above 80 or so, it won't engage at all. I know there is a problem that was solved beofre by replacing a vacuum line under the battery box. The dealer looked at it this morning and said that they never heard of any problems with any of the Volvos and a vacuum line. They said I need a new control module and it will only cost $435 installed. That price includes the module and $111 in labor to replace it.

I was hoping that someone mught have some insight into this and if I do need a new control module, where I can get one that is cheaper than the dealer price. If I do need a module, can I replace it my self and save the $111?

Thanks in advance.