Brake Fluid, Changing: Notes
Warning information for the high voltage system:
For procedures where the ignition must be switched off, refer to PROCEDURES FOR WHICH THE IGNITION NEEDS TO BE SWITCHED OFF .
Use only new Original VW / Audi brake fluid, refer to the Parts information.
- 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 into contact with paintwork.
- Brake fluid is hygroscopic, meaning that it absorbs moisture from the surrounding air, and must therefore always be stored in air-tight containers.
- Rinse off any leaking brake fluid with water.
- Do not reuse used / extracted brake fluid!
- Follow all disposal regulations.
Special tools and workshop equipment required
-- Remove the cap -1- from the brake fluid reservoir.
-- Extract as much brake fluid as possible using intake hose from the Brake Charger/Bleeding Unit :VAS 5234 with an installed screen.
-- Install the adapter -1- to the brake fluid reservoir.
-- Connect filler hose -2- on Brake Charger/Bleeder Unit :VAS 5234 to adapter.
-- Adjust for the correct pressure on the Brake Charger/Bleeder Unit :VAS 5234 .
Depending on the vehicle equipment, the rear brakes or front wheel and rear wheel brakes may be bled without removing the tires using the Brake Bleeding Tool Set :VAS 6564 .
It is required to remove the wheels for specific tire combinations.
For RHD vehicles, begin with the front right.
Use the bleeder hose delivered with the vehicle. The bleed hose must fit tightly over the bleed screw to prevent air from getting into the brake system.
If there are two bleeder screws (depending on the vehicle equipment) per brake caliper, first connect the inner bleeder screw and then the outer.
The brake fluid level in the reservoir must be high enough so that air cannot get into the brake system.
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 strainer).