Antenna Systems

Antenna Systems

Antenna systems can consist of the following:

• Radio or Radio - Navigation head unit

• Antenna or antennas integrated in rear window (system dependent)

• Optional: satellite radio with roof antenna

• Optional: cellular telephone preparation with separate telephone antenna

• FM frequency filters (Ground and Plus)

Vehicles with "Sound System" use a single antenna integrated into the rear window.

Vehicles with "Premium Sound System"and "Radio - Navigation System"use a diversity antenna system integrated into the rear window. Diversity function serves to improve and optimize the reception quality in the vehicle.

The strength and quality of the signals received by the two diversity system antennas is continuously monitored and evaluated by the radio unit. The evaluation data processed by the radio causes active selection of either system antenna that provides the best reception under the existing conditions (diversity function). The continuous, active switching between system antennas is not audible.

• In the event that devices (such as additional antennas) that use a magnetic mounting fixture are attached to the roof, the residual magnetization of the roof sheet metal will adversely affect the operation of the roof antenna and compass module. Before proceeding with any diagnosis of the roof antenna or compass module, ask customer if such a device is/was used.

Before troubleshooting or servicing, technicians must be familiar with the functions and operation specifics of the standard or optional radio system. Always read the owner's manual and review applicable system functions.

• Additional information:

=> Owner's Manual

CAUTION!
When disconnecting and reconnecting battery terminals, observe all applicable Notes and torque specifications, as well as instructions on performing OBD program and electrical system function checks.