34 00 025 Replacing fluid in brake system

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Read and comply with General Information.

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

Unclip retaining tabs (1).

Pull cover (3) out of guide (2) and remove.

Fig 1: Retaining Tabs, Cover And Guide

G04725956

Courtesy of BMW OF NORTH AMERICA, INC.

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 2: Brake Fluid Changer To Expansion Tank And Switch On

G04726562

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.

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

Fig 3: Connecting Bleeder Hose With Collecting Tray

G04754151

Courtesy of BMW OF NORTH AMERICA, INC.

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 4: Locating Brake Fluid Level Mark And Sealing Cap Rubber Seal

G04754154

Courtesy of BMW OF NORTH AMERICA, INC.