34 00 025 Replacing fluid in ABS/ASC+T brake system

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2010 BMW X3, 2009 BMW X3, 2008 BMW X3, 2007 BMW X3, and 2006 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Read and comply with General Information, see 34 00 ... General Information .

IMPORTANT: When carrying out repairs to the brake system, follow the procedure set out in Bleeding brake system with DSC, see 34 00 050 Bleeding brake system with DSC .

Connect brake fluid changer to expansion tank and switch on.

NOTE: Check relevant Operating Instructions for each device.

Charging pressure should not exceed 2 bar.

Fig 1: Connecting Brake Fluid Changer To Expansion Tank

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Fig 2: Brake Flushing System

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Close expansion tank.

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

Fig 3: Locating Rubber Seal In Sealing Cap

Courtesy of BMW OF NORTH AMERICA, INC.