Instrument Cluster

Instrument Cluster

Pointer instruments
In the same way as its previous model, the R56 is given an instrument cluster that is split in two. The actual instrument cluster is in the center of the dashboard. The additional instrument is on the steering column.

NOTE: The additional instrument is connected to the K-CAN.

On the new MINI, the additional instrument (KOMBI2) is connected on the K-CAN. The instrument cluster (KOMBI) is connected via the K-bus to the additional instrument.

In the R56, the instrument cluster has been enhanced to a significant degree.

The following functions are new in the instrument cluster:
- 2 LC displays in the additional instrument for the following functions:
- On-board computer functions (optional extra�550)
- Trip distance recorder and odometer
- Visual seat belt warning for the rear seats
- Personal Profile
- Check-control messages
- Digital speedometer ('magnified speedometer')

- Openings in the instrument cluster depending on equipment for:
- Radio control panel
- Central Information Display (CID) on vehicles with Car Communication Computer (CCC)

- Dial for speed display on vehicles with CID

Brief description of components
The following components are described for the instrument cluster:

Instrument cluster with Wave radio or Wave CD radio







The fill level of the fuel tank is displayed without a separate indicator lamp. As soon as the reserve threshold is reached, a Check Control message lights up in the additional instrument on the steering column (goes out after approx. 20�seconds). In addition, the two last LEDs in the fuel gauge are in orange and then red. As soon as the fuel tank only has fuel for 50�km, the petrol pump lights up permanently.

This display logic applies to all equipment variations of the instrument cluster.

Instrument cluster with Boost CD radio
In this equipment variant, the LC display for the radio has two lines.







Instrument cluster with navigation system







The Central Information Display (CID) and the instrument cluster (KOMBI) are both control modules. These control modules are plugged into one another and fitted together in the dashboard.

NOTE: Deviating terminology in training documents.

The training academy calls the instrument cluster the Central Information Panel (CIP).

All equipment variations of the instrument cluster are connected across a K bus with the additional instrument.

The additional instrument is the gateway to the K-CAN.

Additional instrument







NOTE: Deviating terminology in training documents.

The training academy refers to the additional instrument as the Steering Column Cluster (SCC).

In the two LC display in the additional instrument, the following displays are possible:







The engine speed for the revolution counter is made available across the K-CAN.

R57: Convertible top opening duration display for MINI Convertible
The convertible top opening duration display is on the left beside the rev counter on the steering column. The display is only activated if the convertible top is opened. Counting only starts when the convertible top is fully opened and only if the engine is running. Two digital counters can be called up in the computer display. The four-digit counter can be reset using the trip distance reset button. The six-digit total counter can only be reset by means of a corresponding diagnosis instruction.







The convertible top opening duration display shows hours and minutes. An LED is activated each hour on the hour. Minutes are displayed by the pointer on a scale of 0 to 60. A maximum of 7 hours can be displayed (6 LEDs and one pointer revolution). Following this, the display is reset automatically and the display cycle starts again from the beginning. The change to a new display cycle is indicated by the flashing LEDs.

The display is also reset when the four-digit resettable counter overruns. In this case, the display cycle starts again from the beginning after only 2�hours (1 LED and one pointer revolution). The special feature of this is that 98 hours can be displayed in 14 cycles with a respective duration of 7 hours. The remaining difference to the overrun corresponds to these 2 hours.

JBE: junction box electronics
The distribution box at the junction box electronics supplies the additional instrument with terminal 30g-f. The additional instrument then supplies the instrument cluster with voltage.

Moreover, the junction box electronics deliver the required signals to the instrument cluster on the K-CAN.

Outside temperature sensor
The outdoor temperature sensor is connected directly to the additional instrument. The outdoor temperature sensor is supplied with voltage by the additional instrument.

The outside temperature is displayed in the upper LC display. The additional instrument makes the outside temperature available on the K-CAN for other systems.







The signal from the outdoor temperature sensor is in the additional instrument. A calculation model dampens the effect of the waste heat from the engine compartment on the signal. At higher driving speed or lower engine temperature, lower damping is set. The real outside temperature value can only be expected to be reliable as of a driving speed of approx. 80�km/h.

Acoustic generator
The acoustic generator in the instrument cluster (KOMBI) issues acoustic signals for the following functions:
- Flashing
- Hazard warning lights
- Check-control messages

On vehicles with a Car Communication Computer (CCC):
the acoustic signals for Check Control messages are issued via the loudspeakers of the vehicle. The additional instrument (KOMBI2) receives the signals from the instrument cluster (KOMBI) via the K bus. Via the K-CAN (body CAN), the instrument cluster assumes control of these warnings.







Warning and indicator lamps
On the R56, the legally prescribed indicator lamps are distributed between the instrument cluster and the additional instrument. The display depends on the optional extras fitted.

The signals from the individual systems are messages on the bus. The junction box electronics (JBE) forward these messages on the K-CAN to the additional instrument.












Computer button
The computer button is connected to the steering column switch cluster (SZL). All the functions of the computer and Personal Profile can be operated using the computer button.

The initialization of the Flat Tire Monitor (RPA) is also carried out using the computer button. To do so, call up "SET/INFO".







System functions
The following system functions are described for the instrument cluster:
- Standby
- Operating voltage range
- Damping the outside temperature value
- Brightness control
- Set speed for cruise control
- Redundant data storage

Standby
Operational status (standby) depends on the terminal.
- Terminal 30
The instrument cluster is connected via the junction box at terminal 30. The terminal status (terminal R or terminal 15) is made available to the instrument cluster via the K-CAN. With terminal 30 (terminal R Off), the instrument cluster is in the standby mode. Pressing the reset button wakens the instrument cluster to display the following: odometer, time, outside temperature, fuel reserve (codable). The display goes out after 25 seconds.
- Terminal R
With Terminal R ON, the following are evaluated: turn indicator / main-beam switch and fuel gauge sensor. The time and outside temperature are displayed in the LC display. The computer functions can be started using the computer button (display unlimited in time).
- Terminal 15
With terminal 15 On, a pre-drive check of the fixed indicator and warning lamps is executed.
With a speed signal available:
the additional instrument cannot open a display for Condition Based Service, Personal Profile as well as Flat Tire Monitor.
- Terminal 50 (starter motor)
During the engine start, the on-board supply voltage can fall to such a degree that the internal power supply (6�Volts) can no longer be maintained. In this case, no analog signals are evaluated. No memory operations are executed (in the EEPROM), either.

Operating voltage range
The operating voltage range is from 9 to 16�Volts. At a voltage below 7.5�Volts, undervoltage is detected. At a voltage above 16�Volts, no analog inputs are evaluated.

Damping the outside temperature value
A calculation model in the additional instrument dampens the effect of the waste heat from the engine compartment on the outside temperature signal. This means the increase in temperature is delayed.

The input variable for the calculation model are:
- Road speed
- Coolant temperature
- Status engine ON/OFF
- Outside temperature

A drop in the outside temperature is adopted and not damped. The engine and the body cannot be colder than the ambient temperature.

NOTE: Under certain circumstances, an incorrect display of the outside temperature is physically unavoidable.

With certain driving profiles, the display deviates from the real value due to damping. In the event of a customer complaint, this behaviour must be explained as the state of the art.

Example of damping the outside temperature:
Motorway driving, subsequent city traffic, then traffic congestion







Brightness control
The instrument cluster is illuminated at lamps ON. A photo transistor is installed in the additional instrument to calculate the necessary brightness (display, indicator and warning lights, scales, needles).

The brightness value calculated in the instrument cluster is output on the K-CAN (e.g.�for the Central Information Display). Dimming can be set individually using the left-hand button in the additional instrument. When the vehicle lighting is switched on, this individual specification and the photo-transistor are used to control the dimming. When the vehicle lighting is switched off, dimming is only controlled by the photo-transistor (display brightness specified by the ambient light).

Set speed of the cruise control
The set speed of the cruise control is transferred from the steering column switch cluster (SZL) on the K-CAN. The set speed is transferred and displayed with a resolution of 1�km/h.

Notes for Service department

General information

Test functions of the instrument cluster
The test functions are displayed in the LC display of the instrument cluster. The test functions are used in service to check the encoding. The test functions are also an aid to troubleshooting without the BMW diagnosis system.

Starting the test functions
- Terminal R On or terminal 15 On
- Press the reset button in the instrument cluster for 15�seconds

The test functions can also be started in this way: pressing the reset button and simultaneously switching on terminal R.

Locking and unlocking the test functions (test function 19)
Only the first two test functions are freely accessible. As of the 3rd test function, all other test functions are locked. Unlocking is only possible using test function 19. The test functions are unlocked by entering the total of the vehicle identification number.

Terminating the test function
- Terminal change
- Press the reset button for longer than 5�seconds
- Starting test function 21

Diagnosis instructions
Please note the following information on instrument cluster diagnosis:

NOTE: Hidden function for Check Control messages in the additional instrument.

If a Check Control message is present, an identification number can be called up with the buttons on the turn-signal/high-beam switch.

Procedure:
- Switch on terminal R or terminal 15
- Call up the "SET/INFO" function using the computer button
- Press and hold the computer button until the display changes
- Call up the function "CHECK INFO"
- Press the BC button for longer than 2�seconds
- The following letters will appear in the bottom line of the LCD display for approx. 2 seconds:"CC-ID xxx"

On vehicles without Central Information Display, this diagnosis function has the following advantage:

The identification number from the adjacent table can be used to identify the Check Control message precisely. The diagnosis function can be helpful e.g. in the following situations:
- A customer contacts the dealer by phone due to a Check Control message appearing (question: Can I continue the journey?)
- A customer comes to the dealership with a Check Control message and there is no BMW diagnosis system available (question: Repair now or later?)

National versions
The instrument cluster is available in various national versions.

No liability can be accepted for printing or other faults. Subject to changes of a technical nature.