Roof function center (FZD)
| Item | Explanation |
|---|---|
| 1 | Roof function center (FZD) |
| 2 | Ultrasonic interior movement detector |
| 3 | two-pin plug connection |
| 4 | 10-pin plug connection |
| 5 | Indicator lamp for front passenger airbag deactivation |
| 6 | Sliding/tilting sunroof switch |
| 7 | Emergency call button |
| 8 | 14-pin plug connection |
Emergency call
The emergency call button with emergency call LED is directly connected to the telephone control unit. In the roof function center, the emergency call button with emergency call LED is connected to terminal 31E. Triggering an emergency call:
- Touch the covering flap of the emergency call button and open it.
- Press the emergency call button until the emergency call LED lights up. The connection is established.
- When the emergency call LED flashes, the connection has been established.
The manual emergency call can be cancelled within 5 seconds.
Indicator lamp for front passenger airbag deactivation
The Crash Safety Module (ACSM) activates the indicator light for the passenger airbag deactivation directly. In the roof function center, the indicator light for the emergency call button is connected to terminal 30B. When the indicator light lights up, the front passenger airbag is deactivated.
Slide/tilt sunroof
Using the sunroof switch in the roof function center (FZD), the slide/tilt sunroof can be opened, closed or raised. When the sunroof switch is operated, a corresponding signal is sent to the roof function center (FZD).
The sunroof switch is integrated in the roof function center (FZD) and can be moved in 3 directions:
The following slide/tilt sunroof functions integrated in the roof function center (FZD):
- Read in command request
- Control and monitor electric motor of glass lid
- Closing force limiter
- Locking protection
- Panic mode
- Load cutoff during starting up (automatic engine start-stop function)
- Locator lighting (terminal 58g) in the slide/tilt sunroof switch
- Initialization
Anti-theft alarm system (DWA)
The alarm system monitors the contacts on the doors, the tailgate and the engine compartment lid as well as the status of the tilt sensor and the interior monitoring.
The anti-theft alarm system consists of the ultrasonic interior movement detector (USIS) with ultrasonic interior sensors and the siren with tilt alarm sensor. The alarm sensor (integrated in the siren) monitors the vehicle inclination. The tilt sensor detects whether the vehicle is lifted or towed. The siren with tilt alarm sensor is connected via the LIN bus with the FZD control unit.
The software of the alarm system is integrated in the FZD control unit. This means the FZD control unit controls anti-theft alarm system.
The DWA alarm is acoustic and visual. When a DWA alarm is triggered, the roof function center control unit activates the loudspeakers of the siren via the LIN bus. Simultaneously, the FZD control unit sends an alarm signal as a message on the K-CAN2. The Body Domain Controller (BDC) activates the optical alarm via the lighting system.