One problem related to brake fluid leak has been reported for the 2005 Saturn Relay. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Saturn Relay based on all problems reported for the 2005 Relay.
12/19/2011 wife was driving car on 4 lane highway when brakes engaged for no reason. Foot was not even on the pedal. Van lurched, tires squealed, drastically reduced speed down to 20 mph, and car pulled to the right. She pulled off onto shoulder of road. T/c light came on. Van drove normally after that until 1/5/12 when it happened again. This time it happened at a lower speed, while slowing to turn left through an intersection. Made car skid and she almost missed the turn. It happened again on 1/6/11 while turning into a parking lot. Same symptoms, this time car pulled to left. I inspected vehicle to find that right rear brake caliper was leaking brake fluid. Thought that would solve problem, however, it was an unrelated issue. Happened 5 times on 1/10/11, once again on 1/11/11 at 60 mph, and on 1/12/11 at a lower speed. Diagnosis by a gm certified mechanic determined the problem to be the ebcm. Currently the fuse has been removed from the abs and abs pump to prevent this very dangerous condition from happening again. Switch in car to deactivate traction control was not stopping it from malfunctioning. My wife and kids use this car, and I was very worried about their safety, and I had to consult 3-4 different mechanics to brainstorm and figure out what was causing this problem.