Hydraulic System, Bleeding Without Brake Charger/Bleeding Unit
Brake Bleeding Tool Set:VAS6564
Wrench - Brake Bleeder Set:VAS5519
Procedure
-- Fill the brake fluid reservoir with brake fluid up to the "max" mark.
-- Screw down the container.
-- Remove the protective cap -3- on brake caliper bleeder screw -1- and attach the bleeder bottle bleeder hose -2- to the bleed screw.
Use a suitable bleeder hose. It must be seated tightly on the bleed screw so that no air can enter the brake system.
Brake fluid is caustic risk of skin injury.
Do not extract brake fluid by mouth.
Brake fluid is poisonous and must never be swallowed.
- To prevent skin contact with brake fluid, wear chemical resistant safety gloves.
Brake fluid contact with fluids containing mineral oils causes malfunctions.
- Brake fluid must never come into contact with fluids containing mineral oils (oil, gas, cleaning solutions). Safety gloves must be free of oil and grease.
Risk of damaging the painted surfaces.
- Due to its corrosive nature, brake fluid must also never contact paint. Rinse off any leaking brake fluid immediately using plenty of water.
Bleeding sequence
1 - Left Front Brake Caliper
2 - Right Front Brake Caliper
3 - Left Rear Brake Caliper
4 - Right Rear Brake Caliper
Bleed the brake caliper at each bleed screw. If the brake caliper has two bleed screws, bleed the outer screw first.
-- Build pressure up in brake system by pumping brake pedal.
Slowly depress the brake pedal to prevent the formation of bubbles.
-- As soon as pressure is built up, hold brake pedal in depressed position.
-- Open the bleeder screw with bleeder bottle hose connected, until the pressure is reduced (pedal drops).
-- Hold the pedal in the depressed position and close the bleed screw.
-- Release brake pedal and wait approximately two seconds so that brake fluid can flow out of the brake fluid reservoir.
-- Repeat the procedure until the brake fluid flows out clear and without bubbles.
-- Tighten the bleed screw, remove the bleeder hose and place the protective cap on the bleed screw.
-- Repeat the bleeding procedure in the specified sequence for the remaining brake calipers.
-- Fill the brake fluid reservoir under consideration of brake pad wear up to the max marking and install on the cap.
-- Start the engine and check the brake pedal travel and pressure.
-- If the pedal travel is too long, check the brake system for leaks or repeat the bleeding procedure.
-- Fill the brake fluid reservoir with brake fluid up to the "max" mark.
-- Screw down the container.
A road test must be performed after bleeding. During this, at least one ABS control must be performed!
Changing the Brake Fluid
Refer to BRAKE FLUID, CHANGING
Risk of accident!
- Make sure the brakes are working correctly before driving the vehicle for the first time.
Tightening Specifications
- Refer to OVERVIEW - FRONT BRAKES, PR 1JL, 1ZD
- Refer to OVERVIEW - BRAKES 1LK/1LH TTS
- Refer to OVERVIEW - FRONT BRAKES, TTRS AND CERAMIC FRONT BRAKES
- Refer to OVERVIEW - REAR BRAKES