Brake lines, brake hoses

WARNING: This page is about a different car, the 2010 BMW 135i, 2009 BMW 135i, and 2008 BMW 135i. However, it is still accessible from the selected car via links, so may be relevant.

Brake lines and brake hoses must be correctly routed and must not abut with body or components in a way which would cause chafing.
To prevent damage, release and tighten brake line couplings with a special brake line wrench only.
The system must be bled each time any brake lines have been detached.
All connection points must be checked for leaks.
Only tighten down brake hoses on the front axle when wheels are in straight-ahead position.
Close off open connections of brake lines and individual components to prevent dirt from getting into the brake system.
When tightening down brake line couplings, observe tightening torque 34 32 1AZ, see 34 32 BRAKE LINES .