Brake System, Bleeding Without Brake Charger/Bleeding Unit

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Special tools and workshop equipment required

Brake Bleeder Adapter VAS5234/1 Container
Wrench - Brake Bleeder Set VAS5519
Brake Bleeding Tool Set VAS6564

NOTE:

Make sure that the brake fluid reservoir is always filled.

Procedure

WARNING:

When working with brake fluid, observe relevant safety precautions and notes. Refer to BRAKE FLUID .

-- Fill the brake fluid reservoir up to the "MAX" mark.

-- Remove the left and right front caps -1-.

Fig 1: Identifying Bleeder Screw Cap (Front)

Courtesy of AUDI OF AMERICA, LLC

-- Remove the left and right rear caps -1-.

Fig 2: Identifying Bleeder Screw Cap (Rear)

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Use suitable bleeder hose. It must fit tightly on bleeder valve so that no air gets into brake system.

-- Attach the bleed hose from the bleeder bottle to the bleed screw.

Bleeding sequence

1 - Left front brake caliper

2 - Right front brake caliper

3 - Left rear brake caliper

4 - Right rear brake caliper

-- Build pressure up in brake system by pumping brake pedal.

NOTE:

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 bleed screw, with bleeder bottle hose connected, until the pressure is relieved (pedal drops).

-- Hold the pedal in completely depressed position and close the bleed screw.

-- Release brake pedal and wait approximately 2 seconds so that brake fluid can flow out of the brake fluid reservoir.

-- Repeat the procedure until the brake fluid flows out clear and free of bubbles.

-- Tighten bleed screw to 10 Nm, pull off bleeder hose and place protective cap onto the bleed screw.

-- Repeat the bleeding procedure in the specified sequence on the remaining brake calipers.

-- Install the left and right front caps -1-.

Fig 3: Identifying Bleeder Screw Cap (Front)

Courtesy of AUDI OF AMERICA, LLC

-- Install the left and right rear caps -1-.

Fig 4: Identifying Bleeder Screw Cap (Rear)

Courtesy of AUDI OF AMERICA, LLC

-- Fill the brake fluid reservoir up to the "MAX" mark.

NOTE:

Do not add more brake fluid above the "MAX" mark -1- otherwise it will leak out of the reservoir.

Fig 5: Identifying Brake Fluid Level Marks On Reservoir

Courtesy of AUDI OF AMERICA, LLC

-- Start the engine and test the brake pedal travel and brake pedal pressure.

-- If the brake pedal travel is too far, check the brake system for leaks and/or repeat the bleeding procedure.

Changing the brake fluid

CAUTION:

Make sure the brakes are working correctly before driving the vehicle.