Airbag Warning Lights (AWL) And Check Control: Notes
The E65 has a variety of systems for the display of faults in the ISIS. These include warning lamps, Check Control graphic symbols and Check Control text messages displayed in the KOMBI and Control Display.
The warning lamps include the airbag warning lamp AWL and the "fasten seatbelt" lamp. The warning lamps illuminate in the LED warning light field of the KOMBI.
Seatbelt Warning Lamp
Airbag Warning Lamp (AWL)
The airbag warning lamp is activated in the pre-drive check and is switched on in the event of the following system faults:
- Fault in the self-diagnosis of the SIM.
- Communication fault in the byteflight.
- Fault during the pre-drive check.
- Vehicle identification number incorrect or missing.
The faults in the control unit or the satellites are transmitted to the SIM as a status telegram. These messages are transferred from the SIM via the byteflight to the Central Gateway Module (ZGM) and via the K-CAN-S to the KOMBI.
Activation of the airbag warning lamp AWL, the graphic symbols and the Check Control messages are controlled by the instrument cluster on the basis of the data received from the SIM.
If the functions in the overall system that are relevant to safety are operating correctly, the SIM transmits a message to the instrument cluster at regular intervals, approx. every 200 ms. If this signal fails for longer than 2 seconds, the KOMBI indicates this as a fault in the system by causing the airbag warning lamp to light up.