Removal & Installation (545i)

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

Press brake pedal several times to reduce vacuum pressure in brake booster. This makes it easier to remove PA pipe.
Remove lower section of microfilter housing. See MICROFILTER HOUSING LOWER SECTION .
Remove acoustic cover.
Unlock plug (1) and remove. See Fig 1. Release clamp and detach air intake hose. Remove screws. Remove intake filter housing (2) towards top.
Remove air intake hose with air-mass sensor.
Detach non-return valve (1) from brake booster. See Figure.
Unclip vacuum line from fixture (1). See Fig 2. Unfasten hose clips (2).
Release retaining clips (1) and feed out vacuum line (2). See Fig 3.
To install, reverse removal procedure. Replace hose clips.

Fig 1: Removing Intake Filter Housing

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 2: Locating Vacuum Line

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 3: Removing Vacuum Line

Courtesy of BMW OF NORTH AMERICA, INC.