Computers and Control Systems: Description and Operation

TT Roadster, Interior Monitoring







Component overview

- -1- Radar interior monitoring control module -G303-
- Switch for passenger compartment monitoring -E183-

-1- Radar interior monitoring control module -G303- is located between the front seats in the central console below the grip cavity of the parking brake lever and can be installed and hidden in the central console.

The interior protection functions like an impulse radar. The system is a "protective capsule" with sharp boundaries in the form of a half-circle shell, whose penetration is detected at any time. An alarm signal is sent to the control module for central locking and the alarm is triggered.

There are areas in the vehicle which cannot be monitored, e.g. areas shielded by seat positioning, or areas limited by the physical characteristic of the half-circle.

Metallic objects in the area of the sensor module shield microwaves. This can lead to an inability for the alarm to be triggered in certain areas (behind the metallic object) or in an extreme case for the alarm to not be triggered at all.

If the monitoring signal deviates, the Central Locking Control Module triggers the alarm.

The sensor module contains extensive On Board Diagnostic (OBD) capability. If malfunctions occur at system components, Diagnostic Trouble Codes (DTC) are stored. Malfunctions can be identified using the VAG 1551 tester or VAG 1552 Scan Tool (ST) as well as with VAS 5051 tester.