64 11 970 Replacing fogging sensor

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

00 9 317 . See MAINTENANCE AND GENERAL INFORMATION - SPECIAL TOOLS .

WARNING: Make sure rooms are well ventilated when working with adhesive remover indoors.

IMPORTANT: Do not under any circumstances use paint thinner to clean the bonding surface.

Necessary preliminary tasks:

Remove two-part mirror base cover . See 61 35 177 REMOVING AND INSTALLING (REPLACING) RAIN/LIGHT SENSOR .

Expand two-part mirror base cover (1) by pressing from below and detach.

Feed out two-part mirror base cover (1) and remove.

Fig 1: Removing Mirror Base Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

NOTE: If necessary, carefully heat fogging sensor (2) with a hot air blower to approx. 40-60°C.

Lift off fogging sensor (2) with special tool 00 9 317 and slowly pull off from windshield.

Fig 2: Identifying Fogging Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Bonding surface must be dry and free of dust and grease.

Clean bonding surface with adhesive remover (sourcing reference: BMW Parts Service).

After cleaning, do not touch bonding surface with bare hands.

Pull off protective film completely from fogging sensor (3).

Place mounting template (1) as pictured on rain sensor (2).

Press fogging sensor (3) in direction of arrow with a contact pressure of ≥ 15 N/cm² onto inside of windshield.

NOTE: Firm thumb pressure attains approx. 30 N/cm² .

Remove mounting template (1) carefully from fogging sensor (3).

Fig 3: Identifying Mounting Template And Fogging Sensor

Courtesy of BMW OF NORTH AMERICA, INC.