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.
Control Module And Hydraulic Unit, Installing
Do not remove sealing plugs at new hydraulic unit until the corresponding brake line is about to be installed.
If the sealing plugs are removed too early, brake fluid can escape. If this occurs, unit may not be sufficiently filled or adequately bled.
-- Installation is performed in the reverse order of removal.
When installing the mount, make sure the rubber insulation does not push out of the bracket. After installing, make sure the hydraulic unit and the control module are secure, otherwise malfunctions will register.
-- Remove brake pedal acuator -V.A.G 1869/2-.
-- Bleed brake system. Refer to BRAKE SYSTEM, BLEEDING
-- Enter radio code.
-- Code the ABS control module -J104- in "Guided Fault Finding".
A steering angle sensor -G85-, transverse acceleration sensor -G200- and brake pressure sensor 1 -G201- basic setting must be done.
| Tightening specifications: | |
|---|---|
Control module to ABS hydraulic unit
|
2 Nm + 0.8 Nm |
| Torx bolt for the hydraulic unit to the retainer | 8 Nm |
| Hex bolt, retainer to bracket | 8 Nm |
| Brake lines at ABS aggregate: | |
| Thread M 10 x 1 | 14 Nm |
| Thread M 12 x 1 | 14 Nm |
NO RELATED
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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.