Cellular Telephone and Two-Way Radios

Cellular Telephone and Two-Way Radios

• Remote controls (for example, for garage door openers) and wireless devices (such as a keyboard or PC mouse) may only be operated in the vehicle if the transmission power of the device is a maximum of 100 mW.

• Follow the operating and installation instructions provided by the manufacturer of the cellular telephones, radio-based devices, and antennas.

• The devices' optimal range will only be reached with an exterior antenna.

• When telephone and two-way radio systems are installed properly there is no danger to safety systems, such as ABS or airbag. A prerequisite is however that there has been no intervention in their installations. Parallel wiring to such systems must be avoided.

• Excessively high electromagnetic fields can arise if cellular telephones and two-way radios, with or without an incorrectly installed exterior antenna, are used.

In such a case, damage to health and interference with vehicle electronics cannot be ruled out.

Antenna Installation Locations

Volkswagen permits the installation and operation of radio units, as long as the transmitted power on antenna base, listed in table, is not exceeded. For prescribed antenna locations see table. Refer to => [ Antenna Installation Locations ] Antenna Installation Locations.

The limits set forth in VDE 0848 Part 2 (max. permissible field intensity to protect persons) must be maintained even, if necessary, through reduction of transmission output.

Antenna and Wiring

Use a shielded wire between the transmitter and the antenna. Shielding must be grounded to unit and antenna.

At the same time ensure correct and continuous Ground (GND) connection of antenna base wire to vehicle body.

The transmitting system must only be used when shielded to avoid interference in antenna wiring. To ensure the system it is tuned and operating correctly it is recommended that an output/performance check is carried out.

Power Supply

When retrofitting a radio, the battery is used for connecting the positive and negative wires.

The wiring harness must be manufactured additionally:

• Voltage supply positive via red wire, 2.5 mm2 cross section.

• Voltage supply negative via brown wire, 2.5 mm2 cross section.

The positive wire must have a fuse which must be located very close to the battery. Therefore a fuse panel must be secured next to the battery. Both wires must be encased in an insulating hose.

Make suitable connections at battery end.

On unit end proceed as per owner's manual.

The additional wiring harness must be routed separately from vehicle wiring, the distance apart must be at least 10 cm.

• For some telephone systems and radio communication units an additional terminal 15 (ignition) is necessary. Then, a black wire connection of 1.5 mm2 cross section must be connected from transmitter/receiver unit to terminal 15a.

• When installing, make sure wiring connections are not routed parallel to standard wiring.

Other Auxiliary Installations

The installation of other electronic equipment like business equipment (for example, TV, FAX) or household equipment (such as electrical cool box) is only permitted, if these appliances are marked with a CE or e-sign (Europe only).

Voltage supply is performed via a separate wiring harness and secured by a fuse.