Help!!!!! My brake fluid is leaking at the metering and proportioning valve. "High tech term for the thingy under the drivers side that the brake lines come into and split and go to the front and back wheels." It also has sensor with an electrical wire that goes to it which lights the brake failure light when there is a pressure differential between the front and the back breaks. The fluid appears to be coming from the electrical sensor. This much I know. What I need to know is what I need to do to fix the leak. Replace the whole unit or just the electrical sensor?

Thanks for any advice. This includes Don Fosters usual "Relax and have a beer". I now know enough about my Volvo to always do this first.

Jon