THE BRAKE SENSOR SWITCH FAILS TO REPORT POSITION OF THE BRAKE AND TURNS OFF ANTI LOCKING BREAKING SYSTEM. IF FAILS YOU CAR TURNING THE CAR APPLY BRAKE AND THE FOLLOWING LIGHTS TURN ON. HILL ASSIST,ABS,SKID CONTROL. WHEN THIS COMES ON ABS DOES NOT WORK. IT SOMETIMES LOCKS THE CAR IN PARK. THIS HAPPEN THEN TRIED TO STOP QUICKLY IN THE RAIN AND BRAKING SYSTEM DID NOT WORK CORRECTLY. REAR-ENDED A CAR. REPORTED THIS TO A DEALER YEAR AGO THEY DID NOT KNOW WHAT CAUSED IT. I FOUND IT QUICKLY WHEN SEARCHING THE WEB. COMMON ISSUE THAT COULD BE DEADLY.