Telematics

Telematics

General information

CAUTION:
Before beginning repairs on the electrical system:
- Obtain anti-theft radio security code if necessary.
- Switch the ignition off.
- Disconnect battery Ground (GND) strap.
- On vehicles equipped with Audi Telematics by OnStar, switch-off the emergency (backup) battery for the Telematic/Telephone Control Module prior to disconnecting vehicle battery. Use VAS 5051 Vehicle Diagnostic, Testing and Information System in mode "Guided Fault Finding".
- After reconnecting vehicle battery. re-code anti-theft radio if necessary, and check operation. Also check operation of clock and power windows.
- After reconnecting vehicle battery on vehicles equipped with Audi Telematics by OnStar, switch-on the emergency (backup) battery for the Telematic/Telephone Control Module. Use VAS 5051 Vehicle Diagnostic, Testing and Information System in mode "Guided Fault Finding".

Before troubleshooting or servicing, technicians must be familiar with all telematics functions, operating specifics and the particular service plan which the customer subscribes to. Refer to "Audi Telematics by OnStar Self Study Program (SSP)" and "Audi Telematics by OnStar Owner's Manual" and/or OnStar "Quick Reference Guide" to become familiar with applicable features and functions.

Telematics, technical features
Telematics is an in-vehicle communication system that uses cellular, internet and Global Positioning System (GPS) technologies to provide the customer with safety, security and convenience services.

GPS is a "constellation" of 24 satellites that orbit the earth and constantly broadcast radio signals. The Telematics/Telephone Control Module receives GPS data, decodes it, and transmits the vehicle's location to the service provider's call center via the national cellular network.

Telematics services for Audi customers are provided by OnStar via a dedicated call center. Service plans may provide route directions and concierge services as well as emergency or vehicle repair services. For details see Audi Telematics by OnStar.

During events where the Airbag Control Module processes a crash signal, the vehicle emergency flashers are activated and the doors are unlocked via the respective door control modules. In addition, the telematics system automatically places an emergency call to the OnStar call center.

Telematics hardware includes the driver operated telematics control head (which contains the OnStar control buttons and system status light), microphone, backup loudspeaker, roof mounted GPS/Cellular antenna, Telematics/Telephone Control Module (with supporting software) and related wiring.

An emergency (back-up) battery for the telematics control module is also used in case the vehicle battery goes dead or becomes disconnected due to accident, impact etc..

All telematics components are factory installed/integrated into the vehicle electrical system.

Telematics system - Sedan, component overview.

Telematics system - Sedan, layout.

Telematics system - Avant, component overview.

Telematics system - Avant, layout.

Contact Corrosion
To minimize contact corrosion, only use approved fasteners (screws, nuts, bolts, washers etc.)

Where applicable, fasteners may have a special surface coating recognizable by a greenish color.

Coated fasteners must also be stored separately.