Hydraulic System, Bleeding Without Brake Charger/Bleeding Unit

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Procedure

NOTE:

Bleed the hydraulic system at "all" brake caliper bleed screws.

Bleed the brake caliper with two bleed screws first on the outside and then on the inside of the brake caliper.

WARNING:

Brake fluid is poisonous, and must never be siphoned by mouth under any circumstances.
Wash off any brake fluid that comes into contact with the skin with a lot of water.
If brake fluid contacts the eyes, wash out the eyes and see a doctor.
Refer to BRAKE FLUID GENERAL INFORMATION

-- Fill the brake fluid reservoir with brake fluid up to the "max" mark.

Fig 1: Brake Fluid Reservoir

Courtesy of AUDI OF AMERICA, LLC

-- Screw down the reservoir.

-- Remove the protective cap -1- from the respective brake caliper bleed screw and attach the container bleed hose to the bleed screw.

Fig 2: Identifying Bleeder Screw Cap

Courtesy of AUDI OF AMERICA, LLC

Bleeding sequence

Left Front Brake Caliper
Right Front Brake Caliper
Left Rear Brake Caliper
Right Rear Brake Caliper

NOTE:

Bleed the hydraulic system at "all" brake caliper bleed screws.

Bleed the brake caliper with two bleed screws first on the outside and then on the inside of the brake caliper.

NOTE:

Bleed screw on brake caliper: 10 Nm.

-- 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 the brake pedal in depressed position.

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

-- Hold pedal in completely 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 with brake fluid up to the "max" mark.

Fig 3: Brake Fluid Reservoir

Courtesy of AUDI OF AMERICA, LLC

-- Screw down the reservoir.

-- 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.

WARNING:

Risk of accident!

Make sure the brakes are working correctly before driving the vehicle for the first time.