BMW 7 Series: System Components

Instrument Cluster

The instrument cluster is clipped into place in the dashboard with two clips. A shroud prevents reflections in the acutely angled windscreen.

The instrument cluster comprises the following components:

• Four dials
• Indicator and warning lamps
• TFT color display
• Acoustic output takes place via the head unit
• Button for resetting the trip distance recorder and selecting Condition Based Service in CBS menu.

  Press the button for > 4 seconds to select the Workshop menu. Operation is then by means of the reset button of the trip distance recorder.

• Connected components which serve to activate the displays and indicators in the instrument cluster (see ).

The following components are described in detail:

• Display areas
• Indicator and warning lamps
• TFT display.

Display Areas

The instrument cluster features display areas for:

• Speedometer
• Rev counter
• Economy control (fuel consumption indicator)
• Fuel gauge
• Oil-temperature indicator
• Indicator and warning lamps
• Display
• Program and gear indicator in the display.

Rev Counter

On the BMW7 Series F01/F02, engine speed is displayed using the following signal chain:

• The DME control unit sends the engine speed across the PT-CAN to the instrument cluster.
• Using a characteristic curve, step pulses for actuating the stepper motor are assigned to the effective engine speed.

Economy Control (fuel consumption indicator)

The fuel consumption indicator (economy control) is an analog indicator in the instrument cluster.

Fuel Gauge

The fuel level is indicated in the small dial on the left.

A pictogram of a fuel pump lights up in the display of the instrument cluster when the level drops below a factory-coded threshold (standard = 8 l gasoline).

A warning tone additionally sounds on reaching the reserve threshold.

Outside Temperature Indicator

The temperature sensor measures the outside temperature and displays it in the instrument cluster.

In ignition key position "0", the instrument cluster applies terminal 30g current to the temperature sensor every 20 minutes.

The instrument cluster makes the current outside temperature available in the form of a data telegram via the PT-CAN.

Indicator and Warning Lamps

The indicator and warning lamps are activated by the processor in the instrument cluster.

All important and legally stipulated indicator and warning lamps are activated at terminal 15 ON during the pre-drive check.

The indicator and warning lamps can be illuminated in different colors or combinations.

Fig. 27: Display Indicator And Warning Lamps For Rear Fog Light

NOTE: The indicator lamp for the rear fog light is not active.

TFT Display (thin-film transistor)

The TFT display is divided into the following 7 display areas:

• Symbols, e.g. CBS messages
• On-board computer
• Messages, e.g. traffic information
• Navigation display
  Service Interval Display (CBS)
• Entertainment list, e.g. radio
• Gear program indicator
• Symbols, e.g. outside temperature.

Fig. 28: TFT Display Screen

Manipulation Dot

If a dot appears in the middle under the trip distance recorder and odometer, different data are stored in the TFT display and in the CAS 4.

The manipulation dot is shown when, for example, a comparison of the stored vehicle identification numbers indicates that they do not match.

NOTE: Different data may be caused, for example, by replacing one of these two control units.

Acoustic Generators

Audible warnings are given in support of check control messages. All of the acoustic outputs requested in the instrument cluster are generated in the Car Information Computer, CIC. The sound patterns of the various acoustic outputs are also stored in the CIC.

An acoustic generator is built into the instrument cluster fro the turn indicator sound.

The footwell module is responsible for control of the direction indicator function via the K-CAN2.

The vehicles additionally feature an ignition key warning and a seat belt warning.

An uninterrupted warning tone sounds when the driver's door is opened with terminal 15 OFF and the identification transmitter in place.

The audible signal is switched off by closing the door or after 30 minutes.

The seat belt warning is activated at terminal 15 ON if the seat belt buckle contact is not closed.

The audible warning is intermittent and is no longer than 6 seconds. The indicator and warning lamp remains on.

On-board Computer

The on-board computer available for the BMW 7 Series F01/F02 contains a journey computer which includes the following functions:

• Start of journey
• Duration of journey
• Distance covered
• Average fuel consumption 2
• Average speed 2.

Showing Indicators

The on-board computer displays are shown and scrolled in the instrument cluster via the on-board computer button on the steering column lever for the direction indicator lights.

The individual functions appear in the display of the instrument cluster directly underneath the speedometer.

Once terminal R is switched on, the computer will display the on-board computer function that was displayed last.

All other functions can be selected by pressing the on-board computer button on the steering column lever.

The sequence of the displayed on-board computer functions is always the same.

The menu guidance is described in detail in the section entitled "Functions".

Fig. 29: Identifying Steering Column Switches

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