Alarm System: Notes

The alarm system arms and disarms in conjunction with the superlocking and unlocking of the locking system. Depending on the configuration of the BCU, the alarm system can be armed and disarmed when the locking system is activated with the driver's door lock or the remote handset, or only with the remote handset. Visual and audible confirmation of the alarm system arming and disarming, using the direction indicators and the BBUS, are also configurable in the BCU.

When the vehicle is superlocked, the BCU sends an arming signal to the tilt sensor, which relays it to the BBUS and the volumetric sensor. If the BCU does not receive an acknowledgment signal from the tilt sensor and the volumetric sensor within 1 second, the BCU disables the associated alarm feature for the remainder of the armed cycle.

If the BCU detects two superlocking signals within 10 seconds, it disables volumetric sensing and tilt sensing. This feature prevents accidental triggering of the alarm system during transportation of the vehicle or if a pet is left in the vehicle.