Two problems related to brake sensor have 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.
When the abs and traction control sensor lights came on , it felt like the car wasn't slowing down much, at 35 mph. It was scary. I know of other people that had this same problem, there should be a recall on this. I was told is the ebcm module.
On Sunday, November 9, 2008 I was backing up in my driveway when the traction control engaged briefly, stopped and the service light for both the tc and the abs remained on. I have not been able to get rid of the service lights. On Monday I brought the van into the local garage. In June 2008, I had the same problem but the service lights turned off. The same garage put in new ball bearings including the one that has the sensor in it for the tc and abs. I have read the ebcm module or the sensor on the ball bearing could be the problem.