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.
1 Check that the parking brake is disengaged. It might seem obvious, but the first thing to do is make sure that the parking brake is switched off. Whether you have a parking brake with a hand lever, floor pedal, or electronic switch, make sure it's in the off position.

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.

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
Check to ensure you have enough fluid in the brake master cylinder. A lot of vehicles have the sensor which detects the level of the fluid in on the same circuit as the parking brake. If you find this low, you may want to check the condition of your brake pads. Most likely it is the parking brake switch stuck or the wiring to it is damaged. If you move the switch by hand will it stop? Do you have a tool for testing electrical so we can do some tests? 1 Answer SOURCE: Parking Brake Alarm inset the key and switch on to position 2 Scroll through the warning display untill you get the service indicator apears Press and hold the reset button on the left of the dash apnel for about 4 mins You will be asked if you want to reset Press anh hold the reset button again until you hear an audible warning a71pW3z.
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    • parking brake alarm won t turn off