Communication Systems - Service Information BMW Z4 E85/E86

Car phone Professional

E39, E46, E53, E85

Scheme 81

Introduction

The new permanently installed telephone based on GSM standards (Global Standard for Mobile communications) is fitted on series E39, E46, E53 and E85 vehicles. Everest, a platform that is standardised and used globally (except in Japan), has been created for the permanently installed telephone system. The Everest platform can be used for all permanently installed telephones with MOST and K-bus interfaces (MOST = Media Oriented System Transport, K-bus = body bus).

On E39, E46, E53 and E85 vehicles, the Everest platform is installed with a K-bus interface.

The Everest platform is a control unit that can be configured for various national versions and for different requirements.

The control unit is known as the TCU (Telematic Control Unit).

E39, E46, E53, E85 System Overview Of Professional Car Phone

This system overview comprises the following overviews

Scheme 82

Scheme 83

Scheme 84

1. System Overview
2. Input/Output
3. System Circuit Diagram

New Features

The EURO countries version of the Everest platform includes the following new features

1. Transmitter and receiver for dual band 900/1800 MHz GSM
2. Standardised platform for the following functions: Telephone Telematics (emergency call, breakdown call) Short Message Service (SMS text messaging)
3. Bluetooth module for communications with a Bluetooth handset
4. Bluetooth handset for communications with the TCU (Telematic Control Unit)
5. Secure privacy mode via Bluetooth handset using Bluetooth connection
6. Calling in hands-free mode (via microphone and loudspeaker)
7. Possibility of pairing Bluetooth-capable equipment (laptop, Personal Digital Assistant (PDA), etc.) for transmitting data via the TCU (Telematic Control Unit) in the GSM mobile network.

Operation of a laptop or PDA with the TCU is currently not possible.

With option 638 "Car phone Professional", the Telematic Control Unit (TCU) is both the transceiver and the control unit.

The TCU (Telematic Control Unit) is equipped with a Bluetooth interface with a Bluetooth antenna connected.

The TCU and the Bluetooth handset communicate with each other via their Bluetooth interfaces and Bluetooth antenna.

To communicate with each other, the TCU (Telematic Control Unit) and Bluetooth handset must have been paired with each other.

The Bluetooth handset is paired with the TCU Telematic Control Unit and the Bluetooth handset communicates with the TCU using Bluetooth technology and the Bluetooth radio standard.

E39, E46, E53, E85: Bluetooth Radio Standard Bluetooth is a new short-range radio standard with which several Bluetooth-compatible units are able to communicate with each other at once. Using Bluetooth it is possible to connect up to 8 Bluetooth units to a network in a range of up to 10m. On the Telematic Control Unit (TCU), with the option 638 "Professional car phone", only a single Bluetooth handset can be coupled and participate in the communication.

Note. With the option 638 "Professional car phone" only Bluetooth handsets can be used. Laptops with a Bluetooth interface or a Personal Digital Assistant (PDA) with Bluetooth interface cannot be coupled.

Scheme 85

Radio Frequency Bluetooth uses the licence-free, global Industrial Scientific Medical waveband (ISM) at 2.45 GHz. The frequency range from 2.402 GHz to 2.480 GHz is divided into 79 channels, each with a band-width of 1 MHz. The ISM band is freely available to everybody. The ISM band is used for medical research, for microwave ovens and for radio remote controls for garage doors systems.

Note. Transmission quality can be affected by environmental conditions. The transmission quality of the hands-free facility deteriorates if there are people or objects in the transmission/reception area between the Bluetooth-capable unit and the Bluetooth antenna.

To prevent disturbance in other electrical equipment and to increase security against calls being monitored (privacy mode), channels are changed 1600 times every second. The following graph shows information on changing channels.

Scheme 86

Data And Voice Bluetooth allows both voice and data to be transmitted. A band-width of approximately 1 MBit/s is available for transferring audio data, the phone book and current operating status of the Bluetooth phone

1. Data from a laptop with a Bluetooth interface or from a Personal Digital Assistant (PDA) with Bluetooth cannot be transmitted with option 638 "Professional car phone".
2. Voice is transmitted via hands-free mode or in Privacy mode.

Call-Monitoring Security Every Bluetooth-capable unit has its own 48-bit address. All data transmitted can be encrypted and deciphered with a key up to 128 bit long. This makes it possible to distinguish up to 281 trillion different units. Security against calls being monitored is ensured by the frequency being changed 1600 times every second. Security is also enhanced by the relatively short range of approximately 10 m as any manipulation of the data flow is only possible in the immediate vicinity.

The TCU is the interface between the Bluetooth handset and the components and functions in the vehicle needed to make a phone call.

A radio connection on the Bluetooth radio standard is automatically established between the TCU and the Bluetooth handset in the Bluetooth reception area. A Bluetooth handset that is paired with the TCU is automatically detected when it enters the Bluetooth reception area.

The automatic radio connection means the paired Bluetooth handset can be used from within the reception area without any manual control functions.

With option 638 "Car phone Professional", it is possible to make a call in hands-free mode (using the hands-free facility).

Because the radio connection between the TCU (Telematic Control Unit) and the Bluetooth handset is made automatically using Bluetooth technology, after activation absolutely no control functions are needed on the following components

1. Bluetooth handset
2. BMW radio, on-board monitor, etc.

It is legally permissible for the driver to make a call in hands-free mode while he is driving.

Option 638 "Car phone Professional" is only installed in EURO national version vehicles.

Brief Description Of Components

The car phone Professional consists of the following components

Telematic Control Unit (TCU)

The TCU is the transmit/receive unit of the permanently installed telephone. The TCU is configured for GSM dual band and for frequencies 900/1800 MHz. The TCU is connected to the K-bus and thus connected to the other bus systems in the vehicle. The TCU monitors the charge level of the battery (e.g. lithium ion battery) in the Bluetooth handset and controls the recharging process.

Installation Location The Telematic Control Unit (TCU) is located in the luggage compartment on the rear side wall on the left-hand side or on the left-hand side of the bulkhead, except on the E36 Touring. On the E39 Touring, the TCU is installed behind the rear seats, under the luggage compartment floor. On the E85, the TCU is installed on the partition wall next to the video module.

Scheme 87

Construction The Telematic Control Unit (TCU) is of a modular construction and configured according to national version and requirements.

Scheme 88

TCU COMPONENT FLOW DIAGRAM LEGEND

The TCU is connected to the vehicle's electrical system by a 54 pin multi-pin connector. The TCU is woken up via the K-bus. The multi-pin connectors have various assignments on the models

1. E39: X18500
2. E46: X13599
3. E53: X18500
4. E85: X14133

PIN ASSIGNMENT, 54-PIN MULTI-PIN CONNECTOR

Scheme 89

How it works The TCU (Telematic Control Unit) monitors the hands-free mode and charge level of the battery (e.g. lithium ion battery) on the Bluetooth handset. The TCU is connected to the other control units in the vehicle via the K-bus interface.

Microprocessor The microprocessor controls all TCU (Telematic Control Unit) functions.

Bluetooth Module The Bluetooth module is an interface between the Bluetooth handset and the TCU. The information is transferred between the Bluetooth handset and the TCU via the Bluetooth antenna connected to the TCU.

K-Bus Interface The Telematic Control Unit (TCU) is connected to the K-bus (body bus) via the K-bus interface. The K-bus interface controls transmitting and receiving between the control units and the electronics during data exchange. Data (see below) is transferred via the K-bus, e.g

1. Entries in the phone book (phone numbers)
2. Audio signals (voice)

Interface For Radio Mute The interface for radio mute deactivates the signal output from the radio when hands-free mode is active. In hands-free mode, the radio mute function ensures that only the voice information from the hands-free microphone and to the loudspeakers are processed.

Power Supply The power supply generates the supply voltage for the Telematic Control Unit (TCU) from the on-board supply voltage (terminal 30). The power supply is switched on and off with terminal R.

Voltage Monitoring Voltage monitoring monitors the voltage and recharging of the battery (e.g. lithium ion battery) in the Bluetooth handset. If there is insufficient voltage in the vehicle electrical system, voltage monitoring switches off the power supply.

Subscriber Identity Module (SIM) The interface to the eject box is used to read data from the SIM card. The Telematic Control Unit (TCU) recognises the GSM mobile phone network via the SIM card inserted in the SIM card reader on the eject box. The Professional car phone is then activated for this GSM mobile phone network.

Multiplexer/Digital Sound Processor (MUX/DSP) The module has the following functions

1. A Multiplexer (MUX, Electronic Switch) For Selecting The Channels For Voice Output
2. A Digital Sound Processor (DSP) For Hands-Free Mode
3. Voice Recognition For Telephone Functions

For hands-free mode, noise reduction and echo compensation are performed for the hands-free microphone. For voice output, channels for voice output are assigned to the Digital Sound Processor by the K-bus interface. The voice signals are transferred via the K-bus to the audio final stage of the radio. The voice signals are then sent from the audio final stage to the loudspeakers connected to be outputted.

Transmitter And Receiver Module NAD/GSM 900/1800 A transmitter and receiver module NAD/GSM (Network Access Device/Global Standard for Mobile Communication) is installed in the Telematic Control Unit TCU). The NAD/GSM operates on frequencies 900/1800 MHz. The NAD/GSM transmitter and receiver module enables the GSM mobile phone network of various network providers to be used. (In Germany, e.g. the GSM mobile phone network with network providers D1/D2 and E-Plus.) Information is transferred between the GSM mobile phone network and the NAD/GSM 900/1800 via the Bluetooth antenna connected. The transmitter and receiver module also contains an interface for the emergency call button. (The emergency call button is displayed on the on-board monitor or on Central Information Display, etc.)

Eject Box

The Bluetooth handset is stored in the eject box in the storage compartment in the centre console. A SIM card holder is fitted to the eject box as a receptacle for the SIM card (Subscriber Identity Module). In addition, a safety information module and the charger for the Bluetooth handset battery are integrated into the eject box. When the Bluetooth handset is locked in the eject box, the charge level of the battery (e.g. lithium ion battery) in the Bluetooth handset is monitored. The battery is automatically recharged if a defined charge status is not met: The eject box is connected to the TCU (Telematic Control Unit) via a plug connector and the wiring harness.

Installation Location The eject box is fitted on the centre console in a storage compartment.

Construction The eject box consists of the following parts

Scheme 90

How It Works

1. Eject button: the Bluetooth handset is released from the eject box by pressing the eject button.
2. Plug connector: the plug connector connects the eject box with the Telematic Control Unit (TCU) via the wiring harness.
3. SIM card holder: the SIM card (Subscriber Identity Module) is placed in the slide-out SIM card holder.
4. SIM card reader: the data on the SIM card inserted in the SIM card holder can be read using the SIM card reader (e.g. data of the network provider with whom the user has a contract). The data read is transferred to the TCU.
5. Charger: a charger is integrated in the eject box. The battery (e.g. lithium ion battery) in the Bluetooth handset is charged using the integrated charger. The charge level of the battery is monitored electronically. The battery charge is also controlled electronically. The charger for the battery is switched on and off by the TCU.
6. Run-on time: after switching off the engine, the battery in the Bluetooth handset remains charged for a certain time (programmable). The run-on time for battery charge begins with terminal R OFF (ignition lock position 0) and is specified and monitored by the TCU.

Eject Box With SIM Card Holder

The SIM card (Subscriber Identity Module) is placed in the removable SIM card holder in the eject box. A SIM card reader is integrated in the eject box to read the data on the SIM card (e.g. phone numbers and data for a GSM mobile phone network).

Installation Location The eject box is fitted in the centre console in a storage compartment

Construction The eject box is a connection point between the Bluetooth mobile phone and the Telematic Control Unit (TCU). The connection is established via contacts on the eject box and the SIM card holder (SIM = Subscriber Identity Module).

Scheme 91

How It Works The Bluetooth handset is connected with the SIM card inserted in the SIM card holder once it is locked into the eject box. The connection is established via the contacts on the eject box and the contacts on the Bluetooth handset. The SIM card is placed in the SIM card holder so that its connections touch the contacts on the SIM card holder. When the connections and contacts on the SIM card inserted touch, connection to the Telematic Control Unit (TCU) is as follows: SIM card => SIM card holder > SIM card reader => Telematic Control Unit. The data stored on the SIM card is transferred to the TCU (e.g. the data from the GSM mobile phone network, with the provider of which the user has a contract).

Bluetooth Handset

The Bluetooth handset is the mobile control unit for the TCU (Telematic Control Unit) within the Bluetooth reception area. Using the Bluetooth handset, telephone calls can be made in privacy mode and short messages can be sent and received in the Short Message Service (SMS text messaging).

Installation Location The Bluetooth handset is stored in the eject box in the storage compartment in the centre console.

Scheme 92

Construction The Bluetooth handset consists of components which are illustrated and those which are not. The following components on the Bluetooth handset are not illustrated

1. The electronic circuitry for the telephone functions
2. The electronic circuitry for the Bluetooth technology
3. Power supply (e.g. for lithium ion battery)
4. Microphone (on back of casing)
5. Loudspeaker (on back of casing)

The following components of the Bluetooth handset are illustrated, see

(Scheme 93)

Scheme 93

How It Works The Bluetooth handset engaged in the eject box is released by pressing the eject button. Lifting one side of the Bluetooth handset enables it to be removed more easily from the eject box. When the Bluetooth handset is engaged, the contacts on the Bluetooth handset and the contacts on the eject box touch. The connection to the integrated charger in the eject box and to the Telematic Control Unit (TCU) is established via the contacts.

Note. Activating the telephone functions. The "Professional car phone" functions can only be used when the SIM card is inserted, with the exception of emergency calls.

GSM Antenna

The GSM antenna is the transmit/receive aerial on the TCU (Telematic Control Unit) for communication with a mobile phone network. The GSM antenna is fitted to the outside of the vehicle.

Installation Location

Scheme 94

Scheme 95

1. E39: The GSM antenna is fitted to the upper edge of the rear window (not shown).
2. E46: The GSM antenna is fitted to the rear edge of the roof.
3. E53: The GSM antenna is fitted to the spoiler (not shown).
4. E85: The GSM antenna is fitted to the rear left wheel arch.

Construction

Scheme 96

Scheme 97

1. E39: The GSM antenna is a short rod antenna (not shown).
2. E46: The GSM antenna is a roof-mounted aerial for mobile phones.
3. E53: The GSM antenna takes the form of a closed casing (not shown).
4. E85: The GSM antenna is integrated in the AM/FM aerial (AM = amplitude modulation, FM = frequency modulation).

How It Works The GSM antenna works in the same way on E39, E46, E53 and E85 vehicles.

1. Each GSM antenna is a dual-band aerial for mobile phones.
2. Each GSM antenna is supplied in the EURO national version for the frequency ranges 900/1800 MHz (MHz = megahertz).

Bluetooth Antenna

The Bluetooth antenna is the transmit/receive aerial for the TCU (Telematic Control Unit) for communication with the paired Bluetooth handset. The Bluetooth antenna is installed inside the vehicle.

Installation Location The Bluetooth antenna is fitted according to the model series

INSTALLED LOCATION OF BLUETOOTH ANTENNA

Construction The Bluetooth antenna is accommodated in a closed casing.

Scheme 98

How It Works The Bluetooth antenna is the transmitter/receiver antenna for the Telematic Control Unit (TCU). This communicates with the Bluetooth handset via the Bluetooth antenna. The Bluetooth aerial is designed for a frequency of 2.45 GHz (Gigahertz) (= frequency of Bluetooth standard).

Radio

The radio feeds voice information from the Telematic Control Unit (TCU) as low-frequency signals to the loudspeakers.

A radio with multi-information display (MID) displays the telephone functions

1. Addresses stored on the SIM card can be displayed as telephone directory entries (phone numbers).
2. A phone number displayed can be selected using the controller. Pressing the controller creates a connection to the phone number.

Multi-Function Steering Wheel

Buttons for the telephone functions are built into the multi-function steering wheel (MFL). A call is accepted or ended by pressing the transmit/receive button. When a call is accepted using the transmit/receive button, the TCU switches to hands-free mode.

Hands-Free Microphone

The hands-free microphone is connected to the Telematic Control Unit (TCU). There is no need to use the Bluetooth handset in hands-free mode.

During a phone call, your voice will be picked up by the hands-free microphone and fed to the TCU.

In many countries it is against the law to make a call with the handset whilst driving.

It is legally permissible for the driver to make a call in hands-free mode using the hands-free microphone and loudspeakers in the vehicle while he is driving.

Loudspeakers

The loudspeakers convert the low-frequency signals (voice information from the hands-free module) of the telephone call into sound and emit this sound into the vehicle interior.

Emergency call button

The emergency call button is displayed in the central information display or on the on-board monitor in the telephone menu. The emergency call button is connected to the Telematic Control Unit (TCU). Pressing the emergency call button will trigger a manual emergency call.

SYSTEM FUNCTIONS

The system functions for making a phone call with the Telematic Control Unit (TCU) and the paired Bluetooth handset are based on wireless data transmission using the Bluetooth radio standard.

Bluetooth technology is not approved for use in all countries If approval has not been granted, the Bluetooth connection between the Bluetooth handset and the Telematic Control Unit (TCU) must be temporarily disabled for as long as you are in that country.

MAIN FUNCTIONS OF THE TELEMATIC CONTROL UNIT (TCU) FOR THE TELEPHONE

The TCU enables the following main functions in the basic variants

1. Hands-free mode
2. Privacy mode
3. Short Message Service (SMS text messaging)

Hands-Free Mode

Hands-free mode is automatically activated when a call is accepted using the transmit/receive button on the multi-function steering wheel. If the radio is switched off during call acceptance, the audio system for the voice output will be switched on automatically. The call is then conducted in full duplex digital transmission using the hands-free microphone and the loudspeakers in the vehicle. The transmission quality is improved by digitising the analogue voice signals. The audibility of the voice signals is better.

Privacy Mode

Only passengers are permitted to make calls using the Bluetooth handset in privacy mode during a journey.

In privacy mode, the call is conducted using the Bluetooth handset. It is more difficult for other people to hear the conversation when the Bluetooth handset is used. When privacy mode is activated, hands-free mode is deactivated.

Short Message Service (SMS Text Messaging)

In Short Message Service (SMS text messaging), an incoming text message will appear on the display of the Bluetooth handset, the radio's multi-information display (MID) or the central information display (CID).

However, a text message (SMS) can only be written and sent using the Bluetooth handset.

Telematics

The scope of use of telematics depends on the special equipment installed.

In vehicles with the EURO national version, the option 638 "Car phone Professional" is only available in combination with option 609 "Navigation system Professional".

If option 612 "BMW Assist" is installed, the range of possible uses is expanded. If this special equipment is installed, the following telematics services can be used

1. Manual emergency call, using either the Bluetooth handset or the emergency button
2. Automatic emergency call
3. Breakdown call (only with option 612 BMW Assist with contract)

If the option 609 "Navigation system Professional" is not installed, an emergency call can only be made manually on the Bluetooth handset: Enter the national emergency call number (112 in Germany).

Note. Emergency calls are also possible without a SIM card. An emergency call can always be transmitted, even if the SIM card is not recognised or inserted in the card holder.

Manual Emergency Call

A manual emergency call using the national emergency number (e.g. the national emergency number in Germany is 112) is triggered by pressing the

Automatic Emergency Call

If an accident exceeding a certain severity occurs, the safety and gateway module (SGM) will transmit a crash message via a K-bus to the Telematic Control Unit (TCU). The TCU will then make a connection to the national emergency number.

Manual And Automatic Emergency Call With Option 612 "BMW Assist"

1. Manual emergency call via the emergency call button: After the emergency call button has been pressed, the Telematic Control Unit (TCU) first tries to establish a connection with the service provider.
2. Automatic Emergency Call: The TCU sends an emergency call to the service provider in the event of a crash message. The service provider will try to establish voice contact with the persons in the vehicle to obtain information about: The Severity Of The Accident The Number Of People Injured The Condition Of Injured Persons Rescue efforts are taken in accordance with the information received. The TCU also sends a text message with the location coordinates of the vehicle to the service provider for both emergency calls. If no connection can be made, the national emergency number will be dialled.

Breakdown Call

A breakdown call is only possible if option 612 "BMW Assist" is installed and if a breakdown recovery agreement has been concluded. "Breakdown Service" is displayed in the BMW Assist menu on the on-board monitor or central information display. Pressing the button establishes a telephone connection to the BMW Group Mobile Service. The vehicle's position is transmitted.

Monitoring and recharging of the battery in the Bluetooth handset

The battery charge in the Bluetooth handset (e.g. lithium ion battery) is continually monitored by the Telematic Control Unit (TCU). If the battery charge falls below a predefined level, the TCU will activate the battery charger in the eject box.

Automatic Monitoring And Charging Of The Battery The charge level of the battery (e.g. lithium ion battery) in the Bluetooth handset is established automatically by charge management in the eject box as soon as the Bluetooth handset is engaged in the eject box. The battery is then only charged when the charge management detects that the charge is below a specific level. The on-board supply voltage must also be available (from terminal R ON or during the run-on time).

FUNCTION SEQUENCES

The following functions are possible with the Telematic Control Unit (TCU)

1. Hands-free mode with Full duplex transmission (simultaneous speaking and listening) Echo compensation (suppression of background noises) Operating status display
2. Transmission of audio data or phone book and telephone status
3. Monitoring of charge and automatic charging of battery in the handset. Controlling the power supply for the Bluetooth handset.

Automatic Connection

Only one Bluetooth handset can be operated on the Telematic Control Unit (TCU) at any one time. The paired Bluetooth handset is automatically detected in the TCU reception range. When it has been detected, the connection is automatically established between the Bluetooth handset and the TCU via the Bluetooth interfaces.

Voice Output

The following voice output is used

1. In hands-free mode via the loudspeaker in the vehicle.
2. In privacy mode, via the loudspeaker in the Bluetooth handset.

Voice Output With Hands-Free Mode

In hands-free mode, high-frequency signals received by the GSM antenna and transmitted to the NAD/GSM 900/1800 module (transmitter and receiver module) for the GSM mobile phone network 900/1800 MHz in the Telematic Control Unit (TCU). From this module, the high-frequency signals, with the voice information contained in them, are transferred to the MUX-DSP module. The MUX-DSP module is an electronic switch and converter and fulfills the following tasks

1. The multiplexer (MUX = electronic switch) switches the channel for the voice output and input.
2. The digital sound processor (DSP) converts the high-frequency signals with the voice information into low- frequency signals.

The low-frequency signals are converted by the loudspeakers into sound signals and transmitted to the vehicle interior.

1. The incoming call is accepted when you press the transmit/receive button on one of the following displays: On-board monitor Multi-information radio Multi-information display Central information display BMW Professional radio BMW Business radio The following process is then implemented: A radio which has been switched off is switched on by a switch-on signal for the telephone conversation. If a radio is switched on, a signal is send to the radio mute (mute signal) in the audio system (music, CD, etc.) to mute it. At the same time as the radio is muted, a ringing tone is output through the audio system to indicate an incoming call. High-frequency signals are sent via the MUX-DSP module to the audio system to produce audible signals. The loudspeakers in the audio system convert the low-frequency signals into a single signal sequence and emit these into the vehicle interior. Hands-free mode is activated and the hands-free facility with digital full duplex transmission (the people in the conversation can speak and listen simultaneously) is activated via the MUX-DSP module.

Voice Output In Privacy Mode

In voice output in privacy mode, high-frequency signals are received by the GSM antenna and transmitted to the NAD/GSM 900/1800 module (transmitter and receiver module) for the GSM mobile phone network 900/1800 MHz in the Telematic Control Unit (TCU). From this module, the high-frequency signals, with the voice information contained in them, are sent to the Bluetooth module in the TCU. The high-frequency signals are transmitted from the Bluetooth module in the TCU to the Bluetooth antenna on the TCU.

A ringing tone is produced as an audible signal at the same time. The ringing tone sent by the audio system indicates an incoming call.

Low-frequency signals are sent via the MUX-DSP module to the audio system to produce the ringing tone. The loudspeakers in the audio system convert the low-frequency signals into a single signal sequence and emit these into the vehicle interior.

Scheme 99

1. The incoming call is accepted by pressing the transmit/receive button on the Bluetooth handset. The following process is implemented: A radio which is switched on is muted by the signal to the radio mute (mute signal). Hands-free mode is deactivated. The hands-free facility with digital full duplex transmission (the people in the conversation can speak and listen at the same time) is deactivated via the MUX-DSP module simultaneously. The voice information is sent from the Bluetooth antenna as high-frequency signals in the Bluetooth standard. These signals are received by the Bluetooth handset and are output through the loudspeaker in the Bluetooth handset as voice information.

Voice Input

There are two types of voice input

1. In hands-free mode via the loudspeaker in the vehicle.
2. In privacy mode, via the microphone in the Bluetooth handset.

Voice Input With Hands-Free Mode

During voice input with hands-free mode, the TCU receives the voice information from the hands-free microphone. The voice information is transmitted as low-frequency signals from the hands-free microphone to the MUX-DSP module. The signals are transmitted from the MUX-DSP module to the NAD/GSM 900/1800 module (transmitter and receiver module) for the GSM mobile phone network. The voice information is carried as high-frequency signals via the aerial wire to the GSM antenna on the vehicle exterior. The high-frequency signals are sent by the GSM antenna to the GSM mobile phone network.

Scheme 100

1. Functions are switched on and off using the transmit/receive button on the display. The transmit/receive button is illustrated on the following displays: On-board monitor Multi-information radio Multi-information display Central information display BMW Professional radio BMW Business radio The following process is then implemented: A radio which has been switched off is switched on by a switch-on signal. A radio which is switched on is muted. The hands-free mode is activated. The hands-free facility with digital full duplex transmission (the people in the conversation can speak and listen simultaneously) is enabled via the MUX-DSP module.

Voice Input In Privacy Mode

During voice input in privacy mode, the TCU receives the voice information from the Bluetooth handset. (The voice information is sent in the Bluetooth standard from the Bluetooth handset to the Bluetooth antenna in the vehicle. The Bluetooth antenna is connected to the Bluetooth module on the TCU.) The incoming voice information is transferred to the TCU and transmitted to the NAD/GSM 900/1800 module. The voice information is carried as high-frequency signals via the aerial wire to the GSM antenna on the vehicle exterior. The high-frequency signals are sent by the GSM antenna to the GSM mobile phone network.

Triggering An Emergency Call

With the option 638 "Professional car telephone", there are 2 functions for triggering an emergency call

An emergency call is triggered under the following conditions

1. One of the following items of special equipment is installed: Option 606 "Business navigation system" Option 609 "Professional navigation system"
2. An accident with a defined level of severity is detected.

In an accident, the Safety and Gateway Module (SGM) will transmit a crash message via a K-bus to the TCU. An SMS message is also sent from the Business navigation system to the TCU with the coordinates of the vehicle location. The TCU sends an emergency call via the GSM antenna in the GSM mobile radio network to a service provider. The Service Provider then tries to establish voice contact with the occupants to obtain further information about the accident (severity of accident, type of injuries, number of injured persons). Rescue efforts can then be tailored to the information obtained.

Manual Triggering Of An Emergency Call

If an emergency call cannot be automatically triggered due to the vehicle equipment, the call can be made manually. Press the virtual emergency call button on one of the following displays to trigger an emergency call in the telephone menu

1. On-board monitor
2. Multi-information radio
3. Multi-information display
4. Central information display
5. BMW Professional radio
6. BMW Business radio

When the emergency call button is activated, the TCU tries to establish voice contact with the Service Provider. If no connection with the Service Provider can be established within 60 seconds, the national emergency number 112 in Germany) is dialled automatically.

Note. Emergency number 112 The emergency number 112 (for Germany) is stored in the TCU to allow an emergency call to be made. It is always possible to make an emergency call without inserting the SIM card.

A breakdown call can be made using BMW Assist under the following conditions

1. The option 612 BMW Assist is available.
2. There is a valid contract.

When both prerequisites are satisfied, the process is as follows

1. A virtual button for the breakdown call is displayed in the "BMW Assist" menu.
2. A breakdown call is triggered by activating the button.
3. After the breakdown call has been triggered, the TCU establishes a telephone connection to the BMW Group Mobile Service.

Hands-Free Mode With Full Duplex Transmission

The hands-free facility is designed to allow the simultaneous transmission of voice signals in 2 directions (digital full duplex transmission). Digital full duplex transmission enables you to speak and listen at the same time. Voice signals are transmitted simultaneously as follows

1. Hands-free microphone => TCU
2. TCU => Loudspeakers in vehicle

Echo Compensation

If the hands-free microphone and the loudspeakers in the vehicle are active at the same time (full duplex transmission: you can speak and listen simultaneously), there will be feedback. Echo compensation suppresses this interference, preventing any background noises.

Operating Status Display

The current operating status (depending on equipment) is displayed with the indicator lights for the telephone on the displays in the on-board monitor or multi-information radio, etc., as follows

1. Green: active call
2. Yellow lights up: roaming is active (overseas network)
3. Red lights up: No GSM mobile phone network is available. No emergency call possible. Red flashes: Not possible to log on to the GSM mobile phone network in the home country (e.g. D1). An emergency call can be made in the home country via a different GSM mobile phone network (e.g. D2).

Transfer Of Audio Data, Phone Book And Operating Status Of The Bluetooth Mobile Phone

Audio data, the phonebook and the current operating status of the Bluetooth mobile phone can be transferred using Bluetooth. In Privacy mode, voice is transferred via the Bluetooth mobile telephone or with hands-free mode. A bandwidth of approximately 1 MBit/s is available for transmission.

Read Data From The SIM Card

A SIM card reader is integrated into the eject box. When the SIM card is inserted, the data stored on the SIM card (e.g. phone book entries, Service Provider data, etc.) can be read. The data from the SIM card is sent on to be used again via the interface for the SIM card reader to the TCU.

Automatic Monitoring And Charging Of The Battery

The charge level of the battery (e.g. lithium ion battery) in the Bluetooth handset is established automatically by charge management in the eject box as soon as the Bluetooth handset is engaged in the eject box. The battery is then only charged when the charge management detects that the charge is below a specific level. The on-board supply voltage must also be available (from terminal R ON or during the run-on time).

BASIC SETTINGS

The first time it is operated, the Bluetooth handset must be paired with the TCU (Telematic Control Unit).

The Bluetooth handset is paired with the TCU for the first time at the works .

Pairing and depairing should be carried out in accordance with the operating instructions or the following description

1. Pairing the handset with the Telematic Control Unit (TCU)
2. Depairing the handset from the TCU.

Pairing The Bluetooth Handset With The Telematic Control Unit (TCU)

Note. Actions to be controlled on the vehicle. All actions that are controlled on the vehicle are described in the operating instructions for the option 638 "Professional car phone", which are provided in the vehicle.

Each Bluetooth handset must be paired with the Telematic Control Unit (TCU) before it can be used. Pairing assigns the Bluetooth handset to the TCU. After assignment, the TCU will automatically detect the Bluetooth handset when it enters the reception area.

Note. Couple the Bluetooth handset. The Bluetooth handset must be switched on in the TCU reception area (up to 10m) in order to couple it to the TCU.

The first time a connection is made between a Bluetooth handset and the TCU

1. Enter the Bluetooth passkey once into the Bluetooth handset.
2. Enter the Bluetooth passkey in coupling mode as follows

Note. Observe the operating instructions for coupling mode. Observe the operating instructions for the option 638 "Professional car phone" when coupling the phone.

The TCU is in recognition mode when the 3 indicator lights (depending on the vehicle equipment) in the display, on-board monitor or multi-information display, etc. flash.

To call up coupling mode

1. Switch OFF terminal R (ignition lock position 0)
2. Press and hold the transmit/receive button on the Bluetooth handset
3. Switch ON terminal R (ignition lock position 1)
4. Release transmit/receive button after 2 seconds, or
5. Call up coupling mode in the BMW diagnosis system under "Control unit functions".

Entering Bluetooth passkey

1. Start coupling via the Bluetooth handset menu.
2. Enter the number given as the Bluetooth passkey with the number keys on the Bluetooth handset.
3. Note the display on the Bluetooth handset LCD.

Ending Coupling Mode

1. Switch OFF terminal R
2. Switch ON terminal R The TCU is now in normal operating mode again. Only then the connection between the components and telephone functions in the vehicle and the Bluetooth handset is established.

Decoupling A Bluetooth Handset From The Telematic Control Unit (TCU The connection for the Bluetooth handset coupled to the TCU can be decoupled. Telephone book entries transferred from the SIM card are also cleared by decoupling. Decoupling (clearing of entries) is performed in recognition mode.

1. To clear entries: Press and hold the transmit/receive button on the Bluetooth handset for approximately 1 second. Switch ON terminal R. Release the transmit/receive button. "Bluetooth coupling" is displayed in the on-board monitor or multi-information display. Press the transmit/receive button again and hold for 10 seconds until three signals are heard. "Coupled devices cleared" is displayed in the on-board monitor or multi-information display. Switch terminal R OFF (ignition lock position 0)

The Bluetooth handset is decoupled.

Handset

The automatic establishment of the radio connection with Bluetooth technology allows telephone functions to be called up without operation of the Bluetooth handset. The convenience functions (accept call, telephone directory entry selection, etc.) are available.

The handset functions are described in the operating instructions.

Displays And Control Units

Operate from the various installed components

1. On-board monitor
2. Multi-information display (MID)
3. Multi-information radio (MIR)
4. Central information display (CID)
5. BMW radio Professional
6. BMW radio Business

Telephone Functions

With the exception of the emergency call, the telephone functions are only active when a SIM card (Subscriber Identity Module) is inserted.

The following telephone functions are possible with the TCU (Telematic Control Unit)

1. Make a call Accept call Make call in hands-free mode Make call with handset (privacy mode) End call Transfer telephone directory
2. Emergency call functions Automatic emergency call Manually trigger an emergency call (using the emergency call button) Breakdown call

Storing the Bluetooth handset in the vehicle It is important to lock the Bluetooth handset in the eject box while you are driving. This has the following benefits

1. Reduced risk of injury from loose objects inside the vehicle in the event of sharp braking.
2. The battery charge in the Bluetooth handset (e.g. lithium ion battery) is continually monitored by the Telematic Control Unit (TCU).

Making An Emergency Call

Note. The emergency number 112 is stored. The emergency number 112 for Germany is stored in the TCU to allow an emergency call to be made.

The national emergency number stored in the TCU can be called up and sent (display depending on vehicle equipment)

1. On vehicles with on-board monitor and navigation system: Call up the telephone menu. The emergency number and the vehicle position are displayed. Press the emergency call button.
2. Vehicles with multi-information display: Call up the telephone menu. The emergency number is displayed. Press the emergency call button.

Note. Storing an emergency number. Store a national emergency number in accordance with the operating instructions.

Making A Call The Telematic Control Unit (TCU) recognises an incoming call and switches the audio output for the radio to mute (via a mute signal). At the same time, the loudspeakers in the vehicle are activated for voice signal output (by the digital sound processor). When the Bluetooth handset is connected, a ringing sound is sent from the loudspeakers in the vehicle to indicate an incoming call. At the same time, a signal is sent via the Bluetooth interface to the TCU and Bluetooth antenna connected. This signal is received by the Bluetooth handset and converted into a ringing tone.

Accept Call

A call can be accepted in the following way

1. Press the transmit/receive button on the on-board monitor or multi-information radio (MIR).
2. Press the transmit/receive button on the multi-function steering wheel (if fitted)
3. Press the transmit/receive button on the Bluetooth mobile phone.

Hands-free mode is possible if the call is accepted in the following way

1. Press the transmit/receive button on the radio headphones with microphone.
2. Press the transmit/receive button on the multi-function steering wheel (if fitted).

The telephone call is then conducted using the hands-free microphone and the loudspeakers in the vehicle. If the call is accepted by pressing the transmit/receive button on the mobile phone, the reaction depends on the mobile phone used.

Hands-Free Mode The hands-free facility works with full duplex transmission. In full duplex transmissions, both partners can speak and listen simultaneously.

1. To activate the hands-free facility: The hands-free facility is activated by pressing the transmit/receive button. Audio output remains deactivated so long as the hands-free facility is active. When the transmit/receive button is pressed, the incoming call is output through the loudspeakers into the vehicle interior. NOTE: Please comply with the operating instructions of the Bluetooth mobile phone. For how to accept a call, please refer to the operating instructions of the mobile phone.

End Call A call is ended as follows

1. Press the transmit/receive button on the on-board monitor or multi-information radio display, etc.
2. Press the transmit/receive button on the multi-function steering wheel (if fitted).
3. Press the transmit/receive button on the Bluetooth mobile phone.

Deactivating The Hands-Free Facility A transmit/receive button must be pressed to deactivate the hands-free facility. When the hands-free facility is deactivated, the radio is unmuted and the audio output is reactivated simultaneously.

NOTES FOR SERVICE STAFF

Service staff should note the following points

1. General information
2. Diagnosis
3. Encoding/programming
4. Car and Key Memory

General Information On Servicing The Car Phone Professional

Note. Changing the Bluetooth passkey after replacing the TCU (Telematic Control Unit). Because the Bluetooth passkey is variable, there is no need to change it.

Note. Manual coupling of a Bluetooth handset to the TCU. Manual coupling of a Bluetooth handset to the TCU is required in the following cases: If the coupling of the Bluetooth handset to the TCU conducted at the factory has been cancelled. If another Bluetooth handset is to be used on the TCU.

To couple manually, carry out the following steps

Note. The Bluetooth handset must be coupled manually within 2 minutes. If terminal R is active for longer than 2 minutes when the Bluetooth handset is being coupled manually, "Bluetooth detection" mode is deactivated by the Telematic Control Unit (TCU). Restart the process from point 1 after terminal R has been switched off.

1. Ignition Lock Terminal R ON
2. Displays And Control Units Operate from the components installed (on-board monitor, multi-information radio, etc.). Call up and select a menu with the corresponding control element: "Communication settings" "Telephone/Modem" "Bluetooth connectable in this menu"
3. Bluetooth Handset Select and call up a menu item using the selector button to select the menu items (on lower edge of display). Press "Bluetooth" -> "Select" Press "Vehicle base station" -> "Select" Press "New search" -> "Select" Select the desired vehicle with the arrow buttons if there are multiple displays. Press "Connect" => Display: "BMW and the last 5 digits of the vehicle identification". Press "Connect" => Display: "Enter Bluetooth passkey" (Take the Bluetooth passkey out of the operating instructions, read it off from the Telematic Control Unit (TCU) and read it with the BMW diagnosis system). Enter Bluetooth passkey Press "OK" => Display: "Connection successful" "Insert SIM card" or "Please wait" or available network, e.g. "D1"

Coupling With The BMW Diagnosis System The Bluetooth handset can be coupled to the Telematic Control Unit (TCU) using the BMW diagnosis system. To couple the Bluetooth handset, call up the following menus in succession

1. "Test module"
2. "Function selection"
3. "Service functions"
4. "Body"
5. "Telecommunications"
6. "Fixed installation"
7. Cordless handset (SBDH) log-on/off

Manually Decoupling A Bluetooth Connection On The Bluetooth Handset Select a menu item and call up the following to decouple an active Bluetooth connection using the selection button to select menu items (on lower edge of display).

1. Bluetooth" -> "Select"
2. "Units" -> "Select"
3. "M" -> "Select"
4. "Clear" -> "Select"

Master Reset Button On Bluetooth Handset If no Bluetooth connection can be established between the Telematic Control Unit (TCU) and the Bluetooth handset, the Bluetooth handset should be reset to the as delivered status by a master reset. To re-create the as delivered status, carry out the following steps on the Bluetooth handset

1. Call up the start menu. The "Bluetooth/Settings" display appears
2. Press and hold the "Volume down" button for 3 seconds (on the side of the Bluetooth handset)
3. Press and hold the "Volume up" button for 3 seconds (on the side of the Bluetooth handset)
4. Switch off the Bluetooth handset. The as delivered status is re-created.

Professional Car Phone Diagnostics

Option 638 "Professional car phone" can be connected to the vehicle diagnostics connector for diagnostics using the BMW diagnosis system. Diagnostics with the BMW diagnosis system comprises

1. Identification/read Bluetooth passkey
2. Reading fault memory
3. Clearing fault memory
4. Diagnostics request

Encoding/Programming Professional Car Phone

Universal charger and hands-free kit

E39/E46/E53/E85

Scheme 101

Option 644 "Universal charger and hands-free kit" is designed for all standard bluetooth mobile phones.

The universal charger and hands-free kit forms the interface between the bluetooth mobile phone (hereinafter referred to wherever possible as mobile phone) and the vehicle components and functions needed to make a phone call.

This system overview comprises the following overviews

1. Input/output - (Scheme 83)
2. System circuit diagram - (Scheme 84)

The benefits of the universal charger and hands-free kit are

1. You can make a phone call while you are driving: It is legally permissible to make a phone call using a hands-free device while you are driving. However, the prerequisite for making a phone call with a mobile phone is a connection to a GSM mobile phone network (Global System for Mobile communications).
2. Automatic establishment of a radio connection between the universal charger and hands-free kit and a mobile phone coupled to the universal charger and hands-free kit.
3. You can make a phone call without operating the mobile phone: Select a phone number from the telephone directory Make a connection Accept a phone call With the universal charger and hands-free kit, use can be made of the control functions of the multi-function steering wheel and of the various transmit/receive buttons.
4. You can monitor the charge state of the batteries in the mobile phone. Option 644 "Universal charger and hands-free kit" does not include
5. The mobile phone
6. The snap-in adapter
7. The compensator (optional). To obtain a bluetooth mobile phone and snap-in adapter
8. Information about mobile phones approved for use in vehicles of the BMW Group is available from the BMW Parts Department. Approved mobile phones can be ordered from the BMW Parts Department or may be purchased on the open market.
9. The snap-in adapter to fit an approved mobile phone is available from the BMW Parts Department. The compensator (optional) is available from the BMW Parts Department. The installation of a compensator improves the use of the mobile phone in the GSM network.

OPTION 644 MODIFICATIONS

The universal charger and hands-free kit consists of the following components

Universal charger and hands-free kit (ULF) control unit

The ULF control unit includes the components for communication between the mobile phone and the components and functions in the vehicle needed to make a phone call

The ULF control unit also monitors and regulates the power supply to the mobile phone. In case of insufficient voltage in the vehicle electrical system, the power supply is deactivated.

Installation Location

Except on the E39 Touring, the ULF control unit is installed in the luggage compartment, either on the left-hand partition wall or on the left-hand bulkhead. On the E39 Touring, the ULF control unit is installed behind the rear seats, under the luggage compartment floor.

Scheme 102

Construction

The ULF control unit comprises the components illustrated in the block diagram below, which includes signal inputs and outputs and power supply

Scheme 103

LEGEND FOR ULF CONTROL MODULE COMPONENTS

The connection of the ULF control unit to the vehicle electrical system is made via a 54-pin connector. Refer to PIN ASSIGNMENT, 54-PIN MULTI-PIN CONNECTOR .

How It Works

The ULF control unit controls the hands-free facility and the recharging of the mobile phone batteries. The ULF control unit is also the interface for the connection of the K bus to other control units in the vehicle.

Bluetooth Module

The bluetooth module forms the interface between the bluetooth mobile phone and the telephone functions in the vehicle. Information is exchanged between the bluetooth mobile phone and the vehicle via the connected bluetooth aerial.

Audio Interface

In hands-free mode, the audio interface controls the input and output of voice information. Voice information is input via the hands-free microphone in the middle of the front headlining. Voice information is output via the loudspeakers connected to the radio. Voice information from the hands-free microphone is fed in the form of low-frequency signals. The low-frequency signals from the hands-free microphone are converted to digital form for further processing. Voice information going to the loudspeakers is converted from this digital form to low-frequency signals (hands-free mode is activated by pressing the transmit/receive button on the base plate).

K Bus Interface

The K bus interface controls the transmission and reception of data exchanged on the K bus.

Radio Mute Interface

The radio mute interface deactivates the output of signals from the radio when the hands-free function is active. In hands-free mode, the "mute" function ensures that only the voice information from the hands-free microphone and to the loudspeakers are processed.

Power Supply

The power supply generates the operating voltage for the ULF control unit from the on-board supply voltage (terminal 30). The power supply is switched on and off with terminal R.

Voltage Monitoring

Voltage monitoring monitors the voltage and regulates the recharging of the mobile phone batteries. If there is insufficient voltage in the vehicle electrical system, the voltage monitoring switches the power supply off.

Base Plate With Storage Tray

The base plate provides the connection of the mobile phone to the vehicle wiring harness and to the ULF control unit. The snap-in adapter is fitted to the base plate.

The base plate with storage tray is installed in the centre console.

Scheme 104

The base plate is part of the delivery specification of the basic telephone fittings. When the vehicle is delivered, a storage tray is fitted on the base plate. The storage tray is replaced by a snap-in adapter when it is installed. An 18-pin plug connector creates the connection to the rest of the vehicle electrical system.

The base plate creates the connection between the bluetooth mobile phone (via the snap-in adapter) and the vehicle wiring harness to the ULF control unit.

Signal path: Bluetooth mobile phone <=> Snap-in adapter <=> Base plate <=> Vehicle wiring harness

The on-board supply voltage is applied to the base plate (terminal 30). On the base plate, the on-board supply voltage is prepared for the snap-in adapter. To this end, the following elements are fitted on the base plate

1. Input short-circuit switch
2. Reverse battery protection
3. Overvoltage protection circuit
4. Transient protection (circuit to branch voltage peaks in the vehicle electrical system off to earth)

Moreover, the transmit/receive button is also installed on the base plate.

Scheme 105

Snap-In Adapter On The Base Plate

The snap-in adapter is the connecting piece between the base plate and the mobile phone. The snap-in adapter makes the connection to the GSM antenna and to the vehicle electrical system.

The snap-in adapter is engaged on the base plate on the centre console.

Scheme 106

The snap-in adapter is the connecting piece between the base plate and the engaged bluetooth mobile phone.

Scheme 107

The snap-in adapter connects the bluetooth mobile phone to

1. The GSM antenna via the GSM antenna connection
2. The charging electronics via the charging contacts

GSM Antenna Connection

The connection to the externally mounted GSM antenna improves the transmission and reception conditions for the bluetooth mobile phone.

Recharging The Batteries In The Bluetooth Mobile Phone

The batteries in the bluetooth mobile phone are automatically recharged. The recharging of the batteries in the mobile phone is controlled by the universal charger and hands-free kit. As soon as the mobile phone is engaged in the snap-in adapter, the charging electronics in the universal charger and hands-free kit record the charge state of the batteries. If the charging electronics determine that a predefined charge state has been reached, the system will start recharging the batteries. The ULF control unit transmits the "Cradle enable" signal to the base plate via the control line. This signal activates the power supply on the base plate. The actual recharging is performed by the snap-in adapter. Each snap-in adapter includes charging electronics specially designed for recharging the batteries of the matching mobile phone. Because recharging (charge voltage, current limitation, pulsing, etc.) has to be conducted for the specific model of bluetooth mobile phone, only the correct type of mobile phone is to be operated with the snap-in adapter.

The batteries are charged under the following preconditions

1. Terminal R ON (ignition lock in position 1) or the run-on time is active (from terminal R off)
2. No overvoltage in vehicle electrical system (U > 16 V)
3. No undervoltage in vehicle electrical system (U < 9 V)

Note. Battery charging function run-on If terminal R is switched OFF (ignition lock in position 0), the batteries of an engaged mobile phone will continue to be charged for a further 12 minutes (can be encoded).

Bluetooth mobile phone in snap-in adapter

The reverse of the mobile phone engaged in the snap-in adapter is connected to the connector in the GSM antenna cable. The mobile phone's batteries are supplied with charging voltage via the charging contacts. The circuitry electronically adapts the charging voltage the batteries.

The bluetooth mobile phone is engaged in snap-in adapter on the base plate in the centre console.

A snap-in adapter configured for the universal charger and hands-free kit allows any bluetooth mobile phone matching this snap-in adapter to be operated.

Note. Approved bluetooth mobile phones Information concerning bluetooth mobile phones and the snap-in adapters needed is available from BMW Parts Department.

At present, the following bluetooth mobile phones are approved for vehicles of the BMW Group

1. 3-band bluetooth mobile phones Nokia 6310i Ericsson T39 Siemens S55
2. 2-band bluetooth mobile phone Nokia 6310

Once engaged in the snap-in adapter, the bluetooth mobile phone is connected to the ULF charging electronics and to the GSM antenna (Global System for Mobile communication).

Bluetooth mobile phones are suitable for different applications

1. 3-band bluetooth mobile phones can be used in Global System for Mobile communication GSM (European and US networks) Frequency ranges 900/1800/1900 MHz
2. 2-band bluetooth mobile phones can be used in Global System for Mobile communication GSM (European network) Frequency ranges 900/1800 MHz

Compensator

The compensator (optional) compensates for losses in the aerial cable to the GSM antenna. The compensator is only needed if the operating conditions in a mobile phone network are unfavourable.

The compensator (optional accessories) is installed in the luggage compartment on the left-hand side panel, next to the ULF control unit.

Scheme 108

The compensator is located in an enclosed housing. There is one connector each for the aerial cable from the snap-in adapter and to the GSM antenna. The switch signal from the ULF control unit is fed in through another connector.

The compensator can be used to compensate for losses in the aerial cable between the snap-in adapter and the GSM antenna. The use of the compensator increases the transmission output to the GSM antenna to a maximum of 2 watts. Increasing the transmission power extends the range within the GSM network. The compensator improves the versatility of the mobile phone, especially in areas where there are not many well developed mobile phone networks and under unfavourable conditions in cities.

The GSM antenna is the transmit/receive aerial for the mobile phone. The GSM antenna is fitted to the outside of the vehicle. The GSM antenna improves the communication with mobile phone network. Refer to GSM ANTENNA .

The bluetooth antenna is the transmit/receive aerial for the ULF control unit for communications with bluetooth mobile phones. Refer to BLUETOOTH ANTENNA .

The radio feeds voice information from the ULF control unit to the loudspeakers as low-frequency signals.

The loudspeakers convert the low-frequency signals (voice information from the hands-free module) of the telephone call into sound and emit this sound into the vehicle interior.

The hands-free microphone serves for the input of voice information into the hands-free module. The hands-free microphone converts the voice information into low-frequency signals. The hands-free function eliminates the need to operate the mobile phone while you are driving. Telephone numbers can be selected and telephone connections made simply by speaking.

Refer to SYSTEM FUNCTIONS in CAR PHONE PROFESSIONAL.

Refer to FUNCTION SEQUENCES in CAR PHONE PROFESSIONAL.

1. Coupling of bluetooth mobile phone to universal charger and hands-free kit 4 mobile phones can be coupled to the universal charger and hands-free kit at the same time. However, the mobile phones can be only be used one at a time.
2. Decoupling of bluetooth mobile phones from the universal charger and hands-free kit.
3. For further informations, refer to «BASIC SETTINGS»(/bmw/z4/e85e86-2002-2005/remont/gauges-instrument-panels/#communication-systems-service-information__basic-settings) in CAR PHONE PROFESSIONAL.

Operation

The automatic buildup of the wireless connection in the vehicle means that no manual control functions are needed for daily use of a mobile phone with bluetooth technology. The wireless connection is automatically established. The comfort functions (pick up, select entry from phone book, etc.) are available.

However, some control actions can be made on the snap-in adapter and/or on the displays (radio, on-board monitor, etc.)

1. make a call accept a call conduct a call in hands-free mode end a call
2. transfer telephone directory
3. change between hands-free mode and privacy mode
4. For further information, refer to «OPERATION»(/bmw/z4/e85e86-2002-2005/remont/gauges-instrument-panels/#communication-systems-service-information__operation) in CAR PHONE PROFESSIONAL.

Service staff should note the following points

1. General information: Refer to «GENERAL INFORMATION ON SERVICING THE CAR PHONE PROFESSIONAL»(/bmw/z4/e85e86-2002-2005/remont/gauges-instrument-panels/#communication-systems-service-information__general-information-on-servicing-the-car) in CAR PHONE PROFESSIONAL
2. Diagnosis: Refer to «PROFESSIONAL CAR PHONE DIAGNOSTICS»(/bmw/z4/e85e86-2002-2005/remont/gauges-instrument-panels/#communication-systems-service-information__professional-car-phone-diagnostics) in CAR PHONE PROFESSIONAL
3. Encoding/programming: Refer to «ENCODING/PROGRAMMING PROFESSIONAL CAR PHONE»(/bmw/z4/e85e86-2002-2005/remont/gauges-instrument-panels/#communication-systems-service-information__encodingprogramming-professional-car-phone) in CAR PHONE PROFESSIONAL
4. Car & Key Memory: The Car & Key Memory (CKM) can be used to change the language of the integrated voice recognition system (SVS).

See also:
• PIN ASSIGNMENT, 54-PIN MULTI-PIN CONNECTOR
• GSM ANTENNA
• BLUETOOTH ANTENNA
• SYSTEM FUNCTIONS
• FUNCTION SEQUENCES
• BASIC SETTINGS
• OPERATION
• GENERAL INFORMATION ON SERVICING THE CAR PHONE PROFESSIONAL
• PROFESSIONAL CAR PHONE DIAGNOSTICS
• ENCODING/PROGRAMMING PROFESSIONAL CAR PHONE