6411970 Replacing fogging sensor

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2011 BMW 328xi, 2011 BMW 328i, 2011 BMW 323i, 2010 BMW 335xi, and 2010 BMW 335i. However, it is still accessible from the selected car via links, so may be relevant.

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.

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 Two-Part 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 WEDGE and slowly pull off from windshield.

Installation:

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

Fig 2: Identifying Plug Connection And Heat Fogging Sensor

Courtesy of BMW OF NORTH AMERICA, INC.

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 .

Fig 3: Pressing Fogging Sensor In Direction Of Arrow

Courtesy of BMW OF NORTH AMERICA, INC.

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