Fixitfast Posted November 12, 2023 Report Share Posted November 12, 2023 I'm having issues with my brakes. At first they were hissing and the abs felt like it was occasionally stuttering when I would press the pedal. The symptoms pointed to a brake booster, so I replaced that with a new one and bled the brakes. The new problem is that the pedal goes almost all the way to the floor before the brakes really engage. I did a bench bleed of the master cylinder, and still no luck. It now seems like the abs is not engaging at all either. I think this is more than just air in the lines as I've bled the brakes plenty before. I should add that ever since I got the car a few months ago, the "service advancetrac" light has come on and off pretty frequently. I've read that that can point to an abs module problem, but I'm not 100% Any ideas would be appreciated, as I can't seem to find much online with my specific problems. Not sure if it's some kind of sensor issue or if I need a new master cylinder, or abs module, or potentially both. Quote Link to comment Share on other sites More sharing options...
JTW Posted January 27 Report Share Posted January 27 It;s the hydraulic control unit on the ABS module. They have a tendency to have a internal valve stick open and allow fluid to bypass the calipers. Quote Link to comment Share on other sites More sharing options...
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