34 00 048 Bleeding brake system with ABS/ASC+T

WARNING: This page is about a different variant/trim than selected.

NOTE: Read and comply with General Information. Refer to 34 00 ... GENERAL INFORMATION for the relevant bleeder unit. Charging pressure should not exceed 2 bar.

Connect bleeder unit to expansion tank and switch on.

Fig 1: Connecting Bleeder Unit To Expansion Tank

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Bleeding Rear Axle Brake Circuit:

Connect bleeder hose and collecting container to bleeder valve at rear right wheel brake.

Open bleeder valve and flush until clear brake fluid emerges without bubbles.

Close bleed valve.

Follow the same procedure for rear left wheel brake.

Fig 2: View Of Bleeder Hose And Collecting Container (Rear Wheel)

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Bleed Front-Axle Brake Circuit.

Connect bleeder hose and collecting container to bleeder valve at front right wheel brake.

Close bleeder valve.

Fully depress brake pedal at least twelve times. Brake fluid must emerge clear and free of bubbles.

Hold brake pedal in fully depressed position.

Close bleed valve.

Release brake pedal.

Follow the same procedure for front left wheel brake.

Fig 3: View Of Bleeder Hose And Collecting Container (Front Wheel)

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Switch off bleeder unit and detach from expansion tank.

Check brake fluid level.

Close expansion tank.

NOTE: Take care of rubber gasket (1) in lid.

Fig 4: Identifying Expansion Tank Rubber Gasket

Courtesy of BMW OF NORTH AMERICA, INC.