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.
Pre-Charge Pump
- Cap
- Bolt
- Rubber mounting washer
- Spacer
- Pre charge pump
- Bolt
- Clip
- Mounting bracket
The pre-charge pump is located adjacent to the brake servo on the inner wing (handed).
At low brake fluid temperature the pre-charge pump removes back pressure from the master cylinder, sucks fluid from the reservoir and adds it directly into the circuit. The pump is always used for DSC, HDC and ETC operation and is controlled by the ABS ECU.
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.