Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Parking Brake Switch
The parking brake switch has three positions of which two are counter sprung and the third is the neutral position.
The parking brake switch consists of a number of smaller switches. The switch has 6 terminal pins. When the switch is activated the smaller switches open and close inside the switch. This creates a pattern for the 6 terminal pins. The Park Brake Module (PBM) recognizes certain approved patterns for activating and deactivating the parking brake. If a faulty pattern occurs the Park Brake Module (PBM) indicates this by a diagnostic trouble code being set.
Background lighting/instrument lighting for the parking brake switches are supplied with voltage via the central electronic module (CEM).
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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