Park Brake Sensor/Switch Circuit

Common symptoms

What you'll notice

• Check and replace faulty park brake sensor/switch
• Inspect and repair any loose or damaged wiring connections related to the park brake sensor/switch circuit
• Adjust or replace the park brake switch if necessary
• Inspect and repair any faults in the park brake system, such as low fluid levels or malfunctions in the park brake mechanism

Common causes

Most likely first

1. Faulty or malfunctioning park brake sensor or switch
2. Loose wiring or connections related to the park brake sensor or switch
3. Corrosion or damage to the park brake sensor or switch
4. Issues with the park brake control module or circuit
5. Defective or worn
6. out park brake cables

How to diagnose & fix

Work through it in order

1. Park brake warning light illuminates on the dashboard
2. Park brake does not engage or disengage properly
3. Park brake does not hold the vehicle in place
4. Park brake engages automatically while driving
5. Park brake releases automatically while driving