Instrument cluster (IC), operating information - GF54.30-P-0002-05PM

Fig 1: Identifying Instrument Cluster (IC) Components - With Engine 612, 646 And Transmission 722.6

Shown with engine 612, 646 and transmission 722.6

Multifunction steering wheel (MFL) controls of model 203.0/2

Fig 2: Multifunction Steering Wheel (MFL) Controls Components - Model 203.0/2

Multifunction steering wheel (MFL) controls of model 203.7

Fig 3: Multifunction Steering Wheel (MFL) Controls Components - Model 203.7

General

The information which is shown in the multifunction display (A1p13) of the instrument cluster (A1) is subdivided into different systems. These systems are:

Base function
AUDIO
Navigation
Distronic (adaptive cruise control) (DTR)
Tire pressure loss warning (RDW)
Fault and warning messages
Settings
Trip computer (TRIP)
CTEL

Each of these systems is again subdivided into system displays. The first system display which is shown if a system is selected is named in the following basic system display. The information sought can now be viewed in the system displays or the adjustments made.

Only system displays of systems with which the vehicle is equipped are displayed. If a system is not available, then when the system selection button (S110s3) is pressed it is not displayed in the multifunction display (A1p13) of the instrument cluster (A1).

If the instrument cluster (A1) is activated, the "trip and total mileage" basic system display of the "base function" system always appears in the multifunction display (A1p13).

Button for operating the multifunction display (A1p13)

The multifunction display (A1p13) is operated using the following buttons of the multifunction steering wheel (MFL):

Scroll forward/back button (S110s1)
System select button (S110s3)
Buttons + and -for setting specific functions and volume control (S111s1)
Accept/terminate phone call button (S111s3)

The instrument illumination rheostat (A1r1) and the trip odometer reset button (A1s3) of the instrument cluster (A1) are also used for operating purposes.

Individual vehicle adjustments

The following individual adjustments can be made:

Change various vehicle adjustments
Reproduce the manufacturer default settings
Call up the stored fault messages and warning messages
Acknowledge the fault messages and warning messages
Adjust the brightness of the instrument illumination
Adjust the workshop level
Switch on the roller test mode

Calling up display of different systems

The function requirement in order to have the various systems displayed is "circuit 15R ON".

When the system selection button (S110s3) on the multi-function steering wheel (MFL) is pressed, the multifunction display (A1p13) is switched to the basic display of the next or previous system. The duration of actuation is of no importance.

When the system selection button (S110s3) is pressed with the "next system" button, the display switches to the basic system display of the next respective system.

When the system selection button (S110s3) is pressed with the "previous system" button, the display switches back to the basic system display of the previous respective system.

If all the systems have been run through by pressing the system selection button (S110s3), the basic system display of the "base function" system is reached again.

The systems are located as on an endless loop. i.e. when the system selection button (S110s3) is pressed again, the next system and its basic system display is displayed again. Consequently each system can be reached both with the "previous system" button of the system selection button (S110s3) and with the "next system" button of the system selection button (S110s3).

Function of the system select/voice control push-button (S110s3)

Fig 4: Function Diagram Of System Select/Voice Control Push-button

In addition to the basic system display most systems make available further system displays. The scroll forward/back button is used to continue switching into the next system display within a system (S110s1).

When the scroll forward/back button (S110s1) on the multi-function steering wheel (MFL) is pressed, the multifunction display (A1p13) is switched to the next or previous system display. The duration of actuation is of no importance.

When the scroll forward/back button (S110s1) is pressed with the "scroll forward" button, the display switches to the next respective system display.

When the scroll forward/back button (S110s1) is pressed with the "scroll back" button, the display switches to the previous respective system display.

The function of the scroll forward/back button (S110s1) is shown in the lower picture on the example of the "base function" system.

By pressing the system selection button (S110s3) it is possible to switch over from any system display into the following or previous system and its basic system display.

Function of scroll forward/back button (S110s1) on the example of displaying remaining distance or remaining time

Operation sequence:

Repeatedly press one of the buttons of the system selection button (S110s3) until the "base function" system with the "trip mileage, total mileage" basic system display is displayed in the multifunction display (A1p13).
Repeatedly press one of the buttons of the scroll forward/back button (S110s1) until the "remaining time or remaining distance" system display appears in the multifunction display (A1p13)

Function of scroll forward/back button (S110s1) on the example of the "base function" system

Fig 5: Scroll Forward/Back Button (S110S1) Base Function Diagram

Perform changes in the "adjustments" system:

Repeatedly press the system selection button (S110s3) until the "settings" system appears on the multifunction display (A1p13).
Press the + and -button for setting specific functions and volume control (S111s1) with the "+ button" or with the "- button" until the desired subsystem of the "settings" system is marked in the multifunction display (A1p13).
The marked subsystem is now run through by pressing the scroll forward/back button (S110s1).
Using the + and -button, adjustment of specific functions and volume control (S111s1) the adjustment values can be changed as required by pressing the "+ button" or "- button".

From any system display it is possible to switch over into another system by pressing the system selection button (S110s3). The basic system display of the system then appears with the exception of the "trip computer" system. If a change is made from the previous system to the "trip computer" system, the system display which was last shown in the "trip computer" system is always called up.

Overview of subsystems of the "adjustments" system

Fig 6: Overview Of Subsystems Of "Adjustments" System

Individual adjustments of subsystems of "adjustments" system

Function requirement is "circuit 15R ON".

The driver can select the following different subsystems of the "settings" system in the multifunction display (A1p13) of the instrument cluster (A1) and change the settings within:

Instrument cluster:
- Display unit for temperature display in degrees Celsius (°C) or Fahrenheit (°F)
- Display unit for speedometer in kilometers (km) or miles
- Language choice
- Display of status bar
Time/date:
- Setting the time, hours
- Setting the time, minutes
- Time display mode (12 h, 24 h)
- Setting the date, day
- Setting the date, month
- Setting the date, year
Illumination:
- "Manual" or "automatic" driving lamp switching
- Locator lighting "ON" or "OFF"
- Headlamp switch-off delay in steps of 0, 15, 30, 45, 60 s
- Interior light OFF delay time in steps of 0, 5, 10, 15, 20 s
Vehicle:
- Winter tire speed limit
- Automatic door locking
- Display of taxi/private
- Switching on taxi roof sign
Heater:
- Stationary heater time preselection
- Stationary heater time setting, hours
- Stationary heater, time setting, minutes
- Function of automatic heater booster
Comfort:

Easy entry feature; steering wheel adjustment only or seat and steering wheel adjustment "ON" or "OFF"
Key dependency (several transmitter keys (A8/1))
Mirror adjustment for parking assist
Adjustment for folding the mirrors flat when the vehicle is locked up

Only subsystems with which the vehicle is equipped are displayed. If a subsystem is not available then when the scroll forward/back button (S110s1) or the + and - button for setting specific functions and volume control (S111s1) is pressed, it is not displayed in the multifunction display (A1p13) of the instrument cluster (A1).

All the individual adjustments of the subsystems of the "adjustments" system are also possible while driving, the following are excepted:

Driving lights on
Winter tire limitation
Key dependency

Total resetting to manufacturer default setting

All the adjustments are reset to the manufacturer default setting by this process:

Repeatedly press the system selection button (S110s3) until the "settings" system appears on the multifunction display (A1p13).
Press the trip odometer reset button (A1s3) for at least t = 3 seconds.
A confirmation request is displayed in the multifunction display (A1p13).
Press the trip odometer reset button (A1s3) again within t = 10 seconds and all the adjustments are reset to the manufacturer default setting.

If the trip odometer reset button (A1s3) is not pressed again within this t = 10 seconds, the display switches back again to the basic system display. The vehicle was then not reset to the manufacturer default settings.

Path-specific resetting to manufacturer default setting

By this process all the adjustments in a subsystem of the "adjustments" system are reset to the manufacturer default setting:

Repeatedly press the system selection button (S110s3) until the "settings" system appears on the multifunction display (A1p13).
Press the + and -button for setting specific functions and volume control (S111s1) with the "+ button" or with the "- button" until the subsystem, which is to be reset, of the "settings" system is marked in the multifunction display (A1p13).
The marked subsystem is now run through by pressing scroll forward/back button (S110s1) until the system display which is to be reset is displayed. Now, as with total resetting, the trip odometer reset button (A1s3) can be used.

The following adjustments cannot be reset to the manufacturer default setting while driving:

Driving lights on
Winter tire limitation
Key dependency

If an attempt to do this is made nevertheless, a warning message appears in the multifunction display (A1p13) of the instrument cluster (A1).

If the trip odometer reset button (A1s3) is pressed for longer than 60 seconds the instrument cluster (A1) assumes that the button is jammed. The trip odometer reset button (A1s3) is then interpreted by the instrument cluster (A1) as not pressed.

Calling stored fault and warning messages

When the instrument cluster (A1) is active, you can scroll though the saved messages:

Repeatedly press the system selection button (S110s3) until the "error and warning messages" system appears on the multifunction display (A1p13).
Scroll through the error messages using the scroll forward/back push-button (S110s1). The messages are displayed in the order in which they were acknowledged.

Acknowledging error and warning messages on the multifunction display (A1p13)

Most messages in the multifunction display (A1p13) can be acknowledged by pressing the trip odometer reset button (A1s3).

Indicator or warning lamps which light up in parallel with the display of error and warning messages in the multifunction display (A1p13) cannot be acknowledged.

Adjust workshop level in the instrument cluster (A1)

Function requirement: "circuit 15R ON".

The following steps must be followed to reach the "workshop level" display in the multifunction display (A1p13):

Repeatedly press one of the buttons of the system selection button (S110s3) until the "base function" system with the "trip mileage, total mileage" basic system display is displayed in the multifunction display (A1p13).
Press the trip odometer reset button (A1s3) 3 times within 2 seconds until a beep is audible.
The workshop level appears in the multifunction display (A1p13).

It is possible to change between the following subsystems via the scroll forward/back button (S110s1) of the multifunction steering wheel (MFL):

On-board electrical system voltage display
Instrument cluster data
Chassis number
Oil quality
Roller test mode

Switch on roller test mode

With the roller test mode the wheel speeds of the driven axle are reflected in the non-driven axle. This is necessary on the brake test stand so that no fault is entered in the ESP and BAS control unit (N47-5).

To do this, the following adjustment must be made:

Adjust the workshop level in the multifunction display (A1p13).
Press the scroll forward/back button (S110s1) until the roller test mode appears on the multifunction display (A1p13).
Switch on the roller test mode using the + and -button, adjustment of specific functions and volume control (S111s1).

In the "roller test mode" subsystem it is possible to choose between "ON" and "with circuit 15 OFF" with the scroll forward/back button (S110s1):

If the "ON" status is selected, the "roller test mode" system display is also shown again (reminder message) after a status change from "circuit 15R OFF" to "circuit 15R ON".
If the "with circuit 15 OFF" status is selected then following a status change from "circuit 15R OFF" to "circuit 15R ON" the display switches to the "base function" system with the "trip mileage, total mileage" basic system display.