Pre-drive check

The pre-drive check serves as:

• A check of internal functions in the instrument cluster
• Monitoring of the live signals from all control units that may emit Check-Control messages

During the pre-drive check, the most important indicator and warning lights are activated for 4 seconds when terminal 15 is switched ON. Exception: Indicator and warning lights for airbags actuated when terminal R is switched ON.

Once a pre-drive check completes successfully, all indicator and warning lights are switched off. If faults occur during the pre-drive check, the test of the systems concerned is interrupted. The indicator and warning lights for this system remain on. The check-control system issues the appropriate message.