34 00... General Information: General

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.

Ensure cleanliness and only use rags which do not lose lint.
Wash away or vacuum up brake dust, do not clear it away using compressed air. This dust is a health hazard.
Do not under any circumstances allow any oil or grease to get into the brake system. This would result in a complete malfunction of the brake system.
When cleaning brake components with brake cleaner, do not allow brake cleaner to get into in the brake system.
Even the most minute traces of brake cleaner must be avoided.