Cellular Phone: Description and Operation

Telephone System through May 2009

The telephone system consists of the mobile phone pre-installation.

The telephone transceiver (R36) is integrated in the MMI infotainment system via the MOST bus. It has also a Bluetooth interface.

The telephone baseplate (R126) is installed in the center armrest. Operation is performed via Multimedia Control Head (E380) or via cellular telephone (R54).

Microphones for the microphone unit in front roof module (R164) are installed in the front interior lamp (W1). One microphone is connected (telephone microphone (R38)) with the telephone transceiver.

Fault finding is performed via guided fault finding using vehicle diagnosis, testing & info. system (VAS5051B).

Repairing antenna wires.

Notes on Bluetooth technology

Bluetooth technology is a standardized radio wave data transmission system.

An additional transmitter/receiver unit is installed in the telephone transceiver. A separate Bluetooth Antenna connects the telephone transceiver and telephone baseplate so that all cellular telephones can be used cordless via Bluetooth technology.

The range of the radio wave connection is approximately 10 meters.

Additional information, refer to self study 286, New data bus systems - LIN, MOST Bluetooth.