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Home >> BMW >> 2012 >> 335is 2D Coupe >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heating And Air Conditioning - Repair - E92 >> Heater With Operation >> 64 11 970 Replacing fogging sensor

64 11 970 Replacing fogging sensor

Special tools required: 

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: Pressing Mirror Base Cover
G09852412Courtesy 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.

Installation: 

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

Fig 2: Lifting Fogging Sensor Using Special Tool
G09852413Courtesy of BMW OF NORTH AMERICA, INC.

Clean bonding surface with adhesive remover.

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
G09852414Courtesy of BMW OF NORTH AMERICA, INC.

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