About 600 miles ago I had my CV boots replaced by a local BMW repair shop. While driving home today I noticed my 2004 4.4 X5's brake performance was seriously degrading. It was taking more pedal than usual to stop and it would slowly drop to the floor when at a full stop.

As I was just pulling into my drive, the CHECK BRAKE FLUID message came on along with the BRAKE red lamp. Is there any possible relation here to the CV boot work? What would cause my X5 to suddenly lose brake fluid?

Thanks in advance