The ABS and traction light appeared on the dash while driving on the freeway. I attempted to brake, while merging to exit but the car brake system did not respond. Luckily there were no cars close to us. Figured it could be a brake fluid problem so I added more fluid and it went away for a bit. Itâs come back again and my car feels unsafe to drive. The brake pedal feels stiff or sometimes mushy like dough. I am waiting to get a diagnosis on my car but from what Iâve read and what other prius owners are reporting, it appears to be the âbreak actuator and break booster pump❠that is failing to work properly. Wondering if any other Prius owners have filed a complaint.