Turned out to just be the wiring harness from the vehicle to the parking brake motor. The failure message was intermittent as some on here also had. Would come on and go away and so on. Scanner displayed 2 codes in ABS module. One for parking brake malfunction and the other for left parking brake motor. If the parking brake light doesn't turn off, several troubleshooting steps can be taken to identify the issue. These include-1. Checking The Parking Brake Switch . The parking brake switch is under the parking brake lever or pedal. Ensure the parking brake lever or pedal is fully released to check the button. After update 6, whenever I put on the Parking Brake the master caution alarm comes on like normal but if I hit the Master caution button to silence the alarm the button goes from bright red to no red as it should. The problem is that the Parking Brake Alarm still keeps beeping. The only way to silence it now is to turn the parking break off. 14. Feb 10, 2021 #1. I have just purchased a motorhome which is on a 2007 65c18 cab chassis. It has developed a fault whereas the park brake light and alarm comes on intermittently while driving. The fault also occurred while at home so I definitely know when the fault is present there is no voltage on the switch attached to the handbrake even Apply the parking brake, then remove the floor console rear finish panel. Apply the parking brake. Remove the floor console finish panel. Remove the adjustment nut clip. Turn the parking brake control adjustment nut so that the parking brake control stroke is three to five notches when pulled. -parking brake indicator light still won't go off -realized that if I push on the air recirculation button (next to the AC button) the parking brake warning and light goes off instantly. -also realized that I am not getting cold air with the AC on now either. Faulty Switch: One common reason for the Parking Brake light to stay on is a failing or failed switch. This can be checked easily by moving the handle to and fro after it is down. If the light turns off (or turns off and then back on), the switch is the most likely culprit and will need to be replaced. TZva.

parking brake alarm won t turn off