Brake And Clutch System, Brake Fluid, Changing: Notes

WARNING:

Brake fluid must never come into contact with fluids containing mineral oils (oil, gas, cleaning solutions). Oils containing minerals damage seals and rubber grommets on brake systems.
Brake fluid is poisonous. Do not let brake fluid come in contact with the paint.
Brake fluid is hygroscopic, which means that it absorbs moisture from the air. Always store brake fluid in air-tight containers.
Wash off any spilled brake fluid with plenty of water.
Follow all disposal regulations.

CAUTION:

Use only Brake Fluid VW 501 14B 000 750 in this vehicle.

Special tools and workshop equipment required

Brake Charger/Bleeder Unit VAS 5234

Fig 1: Identifying Brake Charger/Bleeder Unit VAS 5234
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Wrench - Brake Bleeder Set VAS 5519

Fig 2: Identifying Brake Bleeder Socket VAS 5519
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Brake Bleeding Tool Set VAS 6564

Fig 3: Identifying Brake Bleeder Tool Set VAS 6564
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Extract the brake fluid.

NOTE:

Do not remove the strainer inside the brake fluid reservoir.

After extracting, observe that no further brake fluid runs into the reservoir (the brake fluid level in the reservoir must align with the lower edge of the screen).

-- Remove the cap -1- from the brake fluid reservoir.

Fig 4: Identifying Brake Fluid Reservoir Cap

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Use the hose from the Brake Charger/Bleeder Unit VAS 5234 to extract as much brake fluid as possible.

Fig 5: Identifying Hose From Brake Charger/Bleeding Unit VAS 5234

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WARNING: Do not use extracted brake fluid again!

Bleeding the brake system

-- Attach the adapter -1- to the brake fluid reservoir.

Fig 6: Identifying Screw Adapter

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Pay attention to the operating instructions. Refer to Operating instructions for VAS 5234.

-- Set the correct pressure using a Brake Charger/Bleeding Unit VAS 5234. Refer to Special Tools

-- Connect the hose from the Brake Charger/Bleeder Unit VAS 5234 to the adapter -1-.

NOTE: Use a suitable bleed hose. It must seat tightly on the bleed valve so that no air can get into the brake system.

-- Remove the cap -1- from the bleed valve on the left front brake caliper.

Fig 7: Identifying Bleeder Screw Cap

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the collector bottle bleed hose -1- to the left front bleed valve. Open the bleed valve and let the corresponding amount of brake fluid (see table) flow out. Close the bleed valve. Torque, refer to Special Tools

Fig 8: Identifying Collector Bottle Bleeder Hose