BMW X5 Owners & Service Manuals

BMW X5: Bleeding Brake System With DSC

Necessary preliminary tasks:

IMPORTANT: When replacing or repairing, observe the filling and bleeding instructions for the following parts:

Connect bleeder unit with max. 2 bar filling pressure.

A second person is needed to help carry out this work.

Connect DIS.

Select path: Service functions - Chassis/Suspension - Slip control systems - Bleeding procedure.

Connect brake fluid changer to expansion tank and switch on.

IMPORTANT: Check relevant Operating Instructions for each device.

Charging pressure should not exceed 2 bar.

Brakes
Fig. 9: Connecting Brake Fluid Changer To Expansion Tank

Flushing brake system completely

Connect bleeder hose with collecting tray to bleeder valve on rear right brake caliper.

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

Close bleed valve.

Follow same procedure on rear left, front right and front left wheel brake.

Brakes
Fig. 10: Connecting Bleeder Hose With Collecting Tray

Bleeding rear-axle brake circuit

Connect bleeder hose with collecting tray to bleeder valve on rear right brake caliper.

Close bleeder valve.

Run bleeding routine with DIS with bleeder valve open.

After completing routine, press brake pedal 5 times to floor; clear and bubble-free brake fluid must flow out.

Close bleed valve.

Repeat procedure at rear left.

Brakes
Fig. 11: Connecting Bleeder Hose With Collecting Tray

Bleeding front-axle brake circuit

Connect bleeder hose with collecting tray to bleeder valve on front right brake caliper.

Close bleeder valve.

Run bleeding routine with DIS with bleeder valve open.

After completing routine, press brake pedal 5 times to floor, clear and bubble-free brake fluid must flow out.

Close bleed valve.

Repeat procedure at front left.

Brakes
Fig. 12: Connecting Bleeder Hose With Collecting Tray To Bleeder Valve

Switch off brake fluid changer and remove from expansion tank.

Check brake fluid level.

Close expansion tank.

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

Brakes
Fig. 13: Identifying Rubber Seal

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