Side lights/positioning light and turn indicator
Depending on the national-market version, the following lights are activated when the side lights are switched on in the LED headlight:
- Lighting rings of the side lights
- Positioning light
- Side marker light (depending on national-market version)
- Taillamp
The positioning lights (LED) are activated by the headlight driver module. The positioning light is also used as a turn indicator. Therefore, the fibre-optic conductor is designed in two colors.
The positioning light will only be switched off while flashing when the daytime driving lights are switched on. Otherwise, the positioning light will remain switched off while flashing.
As soon as the side lights have been switched on, an acoustic signal sounds when the driver's door is open. Additionally, the instrument panel displays a Check Control message. Leaving the side lights on can drain the vehicle's battery.
The front turn indicators can be switched on from terminal R. The turn indicators are operated by the turn signal/high beam switch on the steering column switch cluster (SZL). The signal from the turn signal/high beam switch is transmitted both via FlexRay protocol and through a separate line to ensure functional redundancy. This enhances the availability of the systems in the event of a fault. The turn indicator light remain operational even when the information fails to reach the footwell module (FRM) through the bus system. This redundant data-transmission is also employed for activating the one-touch flashing function. If a turn indicator is faulty, the remaining turn indicators flash twice as quickly. The malfunction is displayed to the driver as a Check Control message in the instrument cluster (KOMBI).
During one-touch flashing the turn indicators are activated once. The number of flashes can be set to once or three times in "Personal Profile". A visual and acoustic indication of turn indicator status is supplied by the instrument panel (KOMBI). The footwell module (FRM) uses the CAN bus to transmit the information to the instrument cluster (KOMBI), which activates the acoustic sensor and the indicator lights simultaneously with the turn indicators. The acoustic signal and visual display in the instrument cluster (KOMBI) are deactivated when the vehicle's central locking system is engaged while the hazard warning flasher function is activated.