Description of On-Board Diagnostics

The ultrasonic interior monitoring system is only offered in conjunction with the anti-theft system.

The security provided by the anti-theft system is enhanced through addition of the ultrasonic interior monitoring option.

Interior monitoring activates the anti-theft alarm when unauthorized attempts are made to enter the vehicle through the side windows.

Function
The ultrasonic interior monitoring system consists of:
- Control module for ultra-sound sensors -J347-
- Ultra-sound sensor, left for anti-theft warning system -G170-
- Ultra-sound sensor, right for anti-theft warning system -G171-
- Switch for passenger compartment monitoring -E183-

The ultra-sound sensors in the right and left upper B-pillar trims monitor the side windows and send the monitoring signal to the control module for ultra-sound sensors.

If the monitoring signal deviates from the norm, the control module for interior monitoring activates the alarm via the control module for the anti-theft system.

The control module for interior monitoring activates the warning lamps next to the door locking buttons. These warning lamps provide further information regarding the interior monitoring system.

Interior monitoring can be manually shut off for the duration of a door closing via the switch for interior monitoring.

The ultrasonic interior monitoring system is capable of extensive On Board Diagnostic (OBD). If malfunctions in component parts develop, DTCs are stored in the DTC memory of the control module. Malfunctions can then be identified using the VAG 1551 or VAG 1552 scan tools.