34 00 027 Replacing fluid in brake system (M Sport brake) (2' Series coupe and convertible, 2017-2021)

NOTE: READ AND COMPLY WITH GENERAL NOTES .
The capacities are oil change quantities. See "Fluid Capacities" tab for the selected vehicle. (capacities)

Necessary preliminary work:

Refer to REMOVING THE LEFT ENGINE COMPARTMENT COVER .

CAUTION: When carrying out repair work to the brake system, follow the procedure set out in BLEEDING BRAKE SYSTEM WITH DSC .
Use only BMW-approved brake fluids, see BMW OPERATING FLUIDS .

Connect bleeder unit to expansion tank (1) and switch on.

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NOTE: Follow the applicable machine manufacturer's operating instructions.
Charging pressure should not exceed 2 bar.

Completely flush brake system, rear .

Connect tank ventilation line (1) with collecting vessel to vent valve on rear right brake caliper.

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Open bleeder valve and purge until clear, bubble-free brake fluid emerges.

Close vent valve.

Carry out the same procedure on the rear left wheel brake.

Completely flush brake system, front right outer .

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Connect tank ventilation line (1) with collecting vessel to vent valve on front right outer brake caliper.

Open bleeder valve and purge until clear, bubble-free brake fluid emerges.

Close vent valve.

Completely flush brake system, front right inner .

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Connect tank ventilation line (1) with collecting vessel to vent valve on front right inner brake caliper.

Open bleeder valve and purge until clear, bubble-free brake fluid emerges.

Close vent valve.

Carry out the same procedure on the front left wheel brake .

NOTE: The clutch slave cylinder must be scavenged in vehicles with manual gearbox.

Switch off bleeder unit and remove from expansion tank.

Check brake fluid level. If necessary, top up/draw off to "Maximum" level.

Close expansion tank.

NOTE: Pay attention to seal (1) in sealing cap.

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