13 62 560 Removing and installing/replacing airmass flow sensor (M54)

WARNING: This page is about a different car, the 2005 BMW Z4, 2004 BMW Z4, and 2003 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Read out fault memory of DME control unit.
Switch off ignition.
Remove upper intake filter housing section.

Unlock plug (1) and remove.

Loosen hose clamp.

Pull air-mass flow sensor (2) from air intake hose.

NOTE: Illustrations show E85.

Fig 1: Removing Air-Mass Flow Sensor From Air Intake Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check sealing ring (1) between air-mass flow sensor and intake filter housing for damage, replace if necessary.

Coat sealing ring (1) with suitable antiseize agent.

NOTE: Illustrations show E85.

Fig 2: Locating Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Arrow on air-mass flow sensor indicates direction of air flow.

Install air-mass flow sensor between intake filter housing and intake hose so that arrow points in direction of intake hose.

NOTE: Illustrations show E85.

Fig 3: Identifying Air-Mass Flow Sensor Air Flow Direction

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten hose clip (1).

Unlock plug (2) and remove.

Pull hot-film air-mass flow sensor (3) off air intake hose.

Installation:

Observe throughflow direction (4).

Fig 4: Removing Air-Mass Flow Sensor From Air Intake Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Check sealing ring (1) for damage and replace if necessary.

Secure sealing ring (1) in upper air filter housing section.

Attach sealing ring (2) to air-mass flow sensor.

IMPORTANT: Risk of damage to measuring electronics.

Installation:

Coat all sealing rings with suitable antiseize agent.

Fig 5: Checking Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check stored fault messages.

Now clear the fault memory.