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.
Malfunction Threshold
Either of these conditions occurs:
- Symptom 1
The brake pedal position switch (BRK DIAG line) is closed for at least 5 minutes when the vehicle speed [Vehicle Speed] is at 13 mph (20 km/h) or more.
- Symptom 2
The brake pedal position switch (BRK DIAG line) is open for three cycles when the vehicle is stopped (or decelerated to 1 mph (3 km/h) or less) from vehicle speed [Vehicle Speed] over 25 mph (40 km/h).
[ ]: HDS Parameter
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.