3 Series E91 330xi (N52) TOUR
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Electrochromic interior mirror and electrochromic exterior mirrors
The roof control panel controls the dimming of the electrochromic mirrors as follows:
the roof function centre control unit converts the analogue signal from the electrochromic interior rear-view mirror
into a CAN message for the electrochromic door mirrors.
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Ultrasonic interior motion sensor
> E70, E81, E87, E90, E91, E92
The ultrasonic interior motion sensor draws its power supply from the roof control panel. The ultrasonic interior
motion sensor is in the DWA control unit.
> E70
The DWA control unit and ultrasonic interior motion sensor are integrated in the roof control panel.
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4 microwave sensors
> E93
The 4 microwave sensors use microwaves to record movement inside the vehicle interior. A movement is
detected if the reflection (echo) of the microwaves changes.
The range or sensitivity of the microwave sensors is preset (depending on the vehicle model and the equipment
fitted).
The microwave sensors are connected to the alarm system control unit by a single-wire bus (K-bus). The DWA
control unit is connected to the K-CAN.
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FBD receiver: Remote control receiver
> E81, E87, E93
The FBD receiver for the central locking system is installed in the interior mirror (FBD receiver is the receiver for
remote control).
In the standard equipment version, the FBD receiver draws its power supply from the power distributor in the
junction box.
If an FZD control unit is fitted (depending on the equipment variant), power is supplied from the power distributor
in the junction box to the FBD receiver by the FZD control unit (wire is merely looped through).
> E90, E91, E92
The FBD receiver is located in the aerial amplifier in the headlining above the rear window. Power is supplied
from the power distributor in the junction box.
> E70
The FBD receiver is installed in the aerial amplifier with aerial diversity in the tailgate. Power is supplied from the
rear power distributor.
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DWA LED
The DWA LED is located on the underside of the interior mirror. The DWA LED flashes when the anti-theft alarm
system is activated. When an alarm is triggered, the DWA LED lights up.
The DWA LED draws its power supply from the roof control panel. The signal from the ultrasonic interior
motion sensor for the DWA LED is simply looped through the roof control panel (i.e. the cable for the sensor is
routed through the roof control panel).
> E70
The FZD directly actuates the DWA LED.
> E93
The DWA LED draws its power from power distributor in the junction box. The DWA LED is actuated by the
DWA control unit (DWA control unit: siren with tilt alarm sensor and integrated DWA software).
[for further information, please refer to SI Technology (SBT) 61 09 03 031]
SBT Roof control panel E70, E81, E87, E90, E91, E92, E93
BMW AG - TIS
22.02.2013 02:02
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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