34 00 025 Replacing Fluid In ABS/ASC+T Brake System

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

E72 For:

WARNING: High-voltage system - danger to life!

E72 For:

WARNING: Compliance with the following points is mandatory before beginning work:

Observe safety information for handling with hybrid cars

Necessary preliminary tasks:

REMOVE LEFT MICROFILTER HOUSING COVER
READ AND COMPLY WITH GENERAL NOTES .
The capacities are oil change quantities.

IMPORTANT: When carrying out repairs to the brake system, follow the procedure set out in BLEEDING BRAKE SYSTEM WITH DSC .

Use only BMW-approved brake fluids, see BRAKES - OPERATING FLUIDS .

Connect brake fluid changer to expansion tank and switch on.

NOTE: Check relevant equipment manufacturer's operating instructions for each device.
Charging pressure should not exceed 2 bar.

Fig 1: Bleeding Brake System With DSC

Courtesy of BMW OF NORTH AMERICA, INC.

Fully rinse the brake system

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 vent valve.

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

Fig 2: Connecting Bleeder Hose With Collecting Tray To Bleeder Valve On Rear Right Brake Caliper

Courtesy of BMW OF NORTH AMERICA, INC.

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

Switch off brake fluid changer and remove from expansion tank.

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

Close expansion tank.

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

Fig 3: Checking Brake Fluid Level

Courtesy of BMW OF NORTH AMERICA, INC.