3 Series E91 330d (M57T2) TOUR
The following components send input signals to the FZD control unit in the High variant of the roof control panel:
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3 interior-light switches
The interior light and the reading lights are switched on and off via 3 switches.
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Light switch
Switching Terminal R on and setting the light switch to switch position "A" or "2" also switches on the top-light.
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Sliding/tilting sunroof switch
The sliding/tilting sunroof switch is used to open and close the sliding/tilting sunroof and to tilt it upwards.
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Hall sensors in the sunroof drive
The Hall sensors in the sliding/tilting sunroof drive indicate the position of the sliding/tilting sunroof to the FZD
control unit (in the roof control panel).
> E70, E91
The E70, E91 have 2 drives, each with 2 Hall sensors:
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2 Hall sensors report the position of the glass sliding/tilting sunroof and the glass tilting roof (Panorama
glass roof)
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2 Hall sensors report the position of the sliding visor and the wind deflector.
> E91 with Panorama glass sunroof
The E91 with Panorama glass sunroof has its own control unit for the Panorama glass sunroof (SHD:
sliding/tilting sunroof). The Hall sensors report to the SHD control unit.
[for further information, please refer to SI Technology (SBT) 61 12 03 055]
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Wiper/washer system
The position of the windscreen wiper switch is reported to the rain-light sensor or rain-light solar sensor via the
FZD control unit. The rain-light sensor or rain-light solar sensor is activated by the "automatic wipe" button.
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Condensation sensor
> Only vehicles with IHKA: integrated automatic heating and air-conditioning system
The condensation sensor measures the moisture on the windscreen in the vehicle interior. The condensation
sensor is able to detect condensation on the windscreen before it becomes visible.
The condensation sensor is only active in the automatic program.
The condensation sensor draws its power supply from the roof control panel.
The roof control panel evaluates the condensation sensor data.
The roof control panel sends appropriate data to the IHKA control unit (via the K-CAN).
On receiving this data, the IHKA control unit starts the windscreen demisting program.
[for further information, please refer to SI Technology (SBT) 64 01 04 090]
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Electrochromic rear-view mirror
If a strong light beam hits the electrochromic interior mirror, the electrochromic interior mirror sends an analogue
signal to the FZD control unit. The FZD control unit controls the dimming of the electrochromic interior mirror.
The electrochromic mirror glass darkens.
In addition, the FZD control unit also converts the analogue signal into a CAN message. The CAN message is
sent on the K-CAN, triggering the darkening of the electrochromic exterior mirror (optional equipment). The
occupants of the vehicle are not dazzled by reflected light beams.
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Ultrasonic interior motion sensor
The ultrasonic interior motion sensor is a sensor for the anti-theft alarm system (DWA).
The ultrasonic interior motion sensor is able to detect movements in the vehicle interior via ultrasonic signals. If
the anti-theft alarm system is activated and movement is detected in the vehicle interior, an alarm is triggered.
SBT Roof control panel E70, E81, E87, E90, E91, E92, E93
BMW AG - TIS
18.02.2013 21:04
Issue status (12/2007) Valid only until next DVD is issued
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