Antenna, Radio: Description and Operation

Antenna Systems

The diversity antenna system for radio and TV reception in the Touareg consists of the following parts:

• a radio navigation system or a radio unit

• the window antenna for radio and TV reception

• the Antenna Selection Control Module (J515)

• the four antenna amplifiers

The antenna system with diversity function serves to improve and optimize the reception quality in the vehicle.

To do this, the antenna signal entering the radio unit is checked and the result is sent back via an additional antenna connection. The information about the test result applies to antenna selection control module. Function is switched to another antenna when antenna signal is determined to be weak (diversity). This procedure is not audible to the customer.

• Before troubleshooting or servicing, the technicians must be familiar with the function and operation of the radio system.

• When the battery is reconnected, check any affected system or component (radio, clock, comfort electrical connection etc..) according to the repair information and/or the operating instructions.

• By the use of magnetically adhered antennae on vehicle roof, there is the hazard that the compass module will malfunction due to magnetic influence and remaining magnetization of the vehicle roof. For complaints of inaccurate or faulty direction displays on the compass module, ask the customer whether a magnetically adhered antenna is being used before starting repair work.

The navigation and telephone antenna is installed on the roof.

Roof antenna installed for Telematics/telephone and navigation. Working on roof antenna. Refer to --> [ Roof Antenna ] Roof Antenna.