Cellular Phone: Description and Operation

Telephone System

The telephone system consists of the following components:

• Cell phone preparation in the Information electronics control module 1 (J794) (9ZF).

The Telephone Baseplate (R126) is installed in the center console. The telephone is operated either by the MMI Infotainment or by the Cellular telephone (R54).

Microphones for Microphone unit in front roof module (R164) are integrated in the Front Interior Lamp (W1). One microphone ( left front microphone (R140) ) is connected directly to the information electronics control module 1 (J794).

The connection for the antenna is located on the telephone base plate.

• Bluetooth(R) car phone in the information electronics control module 1 (9ZW).

The Bluetooth(R) car phone also supports the operation of Bluetooth(R) Cellular telephone. Bluetooth(R) cellular telephones do not have to be mounted in a bracket or be integrated into the vehicle hands-free equipment.

The Bluetooth(R) link is the only means of connecting the cell phone. The cellular telephone SIM card (directory) can also be read out.

The Bluetooth(R) vehicle telephone has its own telephone handset (R37) with a SIM card slot and charging base.

Bluetooth(R) car phone and the cellular telephone can be operated using the telephone handset or the hands-free equipment in the multifunction steering wheel and via the speech dialogue system.

The Bluetooth(R) antenna (R152) is integrated in the information electronics control module 1.

Microphones for Microphone unit in front roof module are integrated in the Front Interior Lamp. One microphone ( left front microphone (R140) ) is connected directly to the information electronics control module 1.

The connection for the antenna is located on the information electronics control module 1.

• Bluetooth(R) hands-free calling in the information electronics control module 1 (9ZX).

The information electronics control module 1 is installed with the microphone unit in front roof module (R164) and is part of the hands-free setup. Bluetooth(R) connect the cellular telephone (R54).

The Bluetooth(R) antenna (R152) is integrated in the information electronics control module 1.

Fault finding is performed via "Guided Fault Finding" using the Vehicle diagnostic tester.

Notes on Bluetooth(R) Technology

A standardized radio connection system is used to transmit data between the information electronics control module 1 (J794) and telephone handset (R37) / cellular telephone (R54) - Bluetooth(R) Technology.

An additional transmitter/receiver unit is installed in the information electronics control module 1. A separate Bluetooth(R) antenna (R152) combines the information electronics control module 1 and telephone baseplate (R126) /cellular telephone, so that the telephone handset/cellular telephone can be wireless.

The range of the radio wave connection is approximately 10 meters (33 ft.).

Notes on MOST bus

The optical Data bus "MOST bus" is used in addition to the CAN bus.

A fiber-optic cable is used as a "connecting cable". Fiber optic cables are routed inside corrugated tubes for protection.

Replace complete fiber optic cable if possible.

The front surface of the connectors must not be dirty.

If the connectors are disconnected: Attach protective cap for cable connector (VAS 6223/9).

When installing fiber optic cables, make sure not to go below the minimum bending radius of 25 mm (1 in.). Do not crush or kink fiber optic cables.