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Home >> Mercedes Benz >> 2004 >> CLK320 2D Convertible >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical System, Equipment & Instructions -- Basic Knowledge - 209 Chassis >> Basic Knowledge >> Instrument cluster (IC), function - GF54.30-P-0002Q >> Instrument cluster (IC), operating information - GF54.30-P-0002-05Q

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

Illustrated on model 209.4 

Fig 1: Identifying Instrument Cluster (IC) Components - Illustrated On Model 209.4
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Multifunction steering wheel (MFL) controls 

Fig 2: Identifying Multifunction Steering Wheel (MFL) Controls Switches And Button
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IMPORTANT As of 1.6.03 the display of the selected driving program in the gear indicator (A1p12) has changed from W, S to C, S (C = Comfort, S = Sport).

This document covers the following points:

Operating the multifunction display (A1p13) 

If the instrument cluster (A1) is activated by opening the driver door, for instance, the main screen of the base system (trip and total mileage, outside temperature) always appears on the multifunction display (A1p13).

Calling up display of different systems 71 of 260 

Function requirement is "Circuit 15R ON".

If the system selection button (S110s3) of the multifunction steering wheel is pressed, the multifunction display (A1p13) switches over to the basic display of the next system. Once the driver has scrolled through all systems the main screen of the base function appears again.

System selection via multifunction steering wheel using the system selection button (S110s3) 

Fig 3: System Selection Via Multifunction Steering Wheel Using System Selection Button (S110S3)
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Function of scroll forward/back pushbutton (S110s1) using the base function as an example 

Fig 4: Function Diagram Of Scroll Forward/Back Pushbutton (S110S1) Using Base Function
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The illustration above shows the possible systems arranged in a circle. When the system selection button (S110s3) is pressed, the display always goes to the next system.

IMPORTANT You can jump to another system from any screen by pressing the system selection button (S110s3).

With the exception of the trip computer, the basic display of this system then appears. If a change is made from the system in front to the trip computer system, the display screen is always called up which was last shown for the trip computer.

Scrolling within a system 

Function requirement is "Circuit 15R ON".

In addition to the main screen, most systems also feature other screens.

The scroll forward/back button (S110s1) is used to scroll within a system.

The display jumps one screen further each time the driver presses the scroll forward/back pushbutton (S110s1) (↑). The display scrolls either forwards or backwards depending on which portion of the scroll forward/back pushbutton (S110s1) the driver presses (↑, ↓).

IMPORTANT As of 1.6.03 the base function is expanded by the system with the code (477) tire pressure loss warning.

IMPORTANT Only systems and functions with which the vehicle is equipped are displayed. If a system is not present, it is not displayed (go toped) when the system selection button (S110s3) is pressed.

Overview and sequence for the "Settings" menu item 

Fig 5: Overview Diagram And Sequence For "Settings" Menu Item
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Selection of menu items in the menu item "Settings" 

Press the system selection button (S110s3) until the menu "Settings... reset: press reset button for 3 seconds" appears in the multifunction display (A1p13). go to the "Settings" menu via the scroll forward/back button (S110s1) ( ↑).

Press the + and -, specific function setting and volume control button (S111s1) to select the menu item required.

Individual setting 

Function requirement is "Circuit 15R ON".

The "Settings" function allows the driver to change various presets. The driver has the option of carrying out various presettings via the "Settings" function. With the instrument cluster (A1) the time can be set in hours and minutes on vehicles except code (352) COMAND operating and display system.

Temperature display 

A1p4The driver can switch the outside temperature indicator between degrees Celsius and degrees Fahrenheit. The instrument cluster (A1) also sends a message for the air conditioning on the class B (interior) controller area network bus (CAN-B).

Speedometer 

You can switch the tachometer between miles and kilometers per hour. This changeover also affects the display of the trip computer system integrated in the instrument cluster (A1). The instrument cluster (A1) sends a message on the Class C (engine compartment) controller area network bus (CAN-C).

The following settings are also possible:

Text/language 

The language in which the texts appear in the instrument cluster (A1) can be selected here.

The instrument cluster (A1) also places a corresponding message on CAN-B. The language in which the texts appear in the instrument cluster (A1) can be selected here.

Overview and sequence of settings for the "Instrument cluster" menu item 

Fig 6: Overview Diagram And Sequence Of Settings For "Instrument Cluster" Menu Item
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Change setting in "Instrument Cluster" menu item 

Press the system selection button (S110s3) until the "Settings" function appears in the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) (↑).

Press the button + and -, setting of specific functions and volume control (S111s1) towards (+) or (-) until the desired value is active in the multifunction display (A1p13).

Press the scroll forward/back button (S110s1) ( ↑ ) until the display of the setting to be changed appears in the multifunction display (A1p13).

Press the button + and -, setting of specific functions and volume control (S111s1) towards (+) or (-) until the desired value is active in the multifunction display (A1p13). The activated value becomes effective immediately.

Overview and sequence of settings in the menu item "Lighting" 

Fig 7: Overview Diagram And Sequence Of Settings In Menu Item "Lighting"
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Change setting in "Illumination" menu item 

Press the system selection button (S110s3) until the "Settings" function appears in the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) ( ↑ ). Press pushbutton + and, setting specific functions and volume control (S111s1) towards (+) or (-) until the desired "Lighting" menu item is active in the multifunction display (A1p13), Press the scroll forward/back button (S110s1) ( ↑ ) until the display of the setting to be changed appears in the multifunction display (A1p13).

Press the button + and -, setting of specific functions and volume control (S111s1) towards (+) or (-) until the desired value is active in the multifunction display (A1p13). The activated value becomes effective immediately.

Overview and sequence of adjustments in "Vehicle" menu item 

Fig 8: Overview Diagram And Sequence Of Adjustments In "Vehicle" Menu Item
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Change setting in "Vehicle" menu item 

Press the system selection button (S110s3) until the "Settings" function appears in the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) (↑).

Press pushbutton + and -, setting specific functions and volume control (S111s1) towards (+) or (-) until the desired "Vehicle" menu item is active in the multifunction display (A1p13).

Press the scroll forward/back button (S110s1) ( ↑ ) until the display of the setting to be changed appears in the multifunction display (A1p13).

Press the button + and -, setting of specific functions and volume control (S111s1) towards (+) or (-) until the desired value is active in the multifunction display (A1p13). The activated value becomes effective immediately.

Overview and sequence of settings in the "Comfort" menu item 

Fig 9: Overview Diagram And Sequence Of Settings In "Comfort" Menu Item
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Change setting in "Comfort" menu item 

Press the system selection button (S110s3) until the "Settings" function appears in the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) ( ↑).

Press pushbutton + and -, setting specific functions and volume control (S111s1) towards (+) or (-) until the desired "Comfort" menu item is active in the multifunction display (A1p13), Press the scroll forward/back button (S110s1) ( ↑) until the display of the setting to be changed appears in the multifunction display (A1p13).

Press the button + and -, setting of specific functions and volume control (S111s1) towards (+) or (-) until the desired value is active in the multifunction display (A1p13). The activated value becomes effective immediately.

IMPORTANT Settings are selectable regardless of the vehicle speed.

Changing over from degrees Celsius (°C) to degrees Fahrenheit (°F) as an example 

Press the system selection button (S110s3) until the "Settings" function appears in the multifunction display (A1p13), go to the corresponding menu item using the scroll forward/back button (S110s1) (↑).

Press the button + and -, setting of specific functions and volume control (S111s1) towards (+) or (-) until the "Instrument cluster" menu item is active in the multifunction display (A1p13).

Press the scroll forward/back button (S110s1) ( ↑) until the "TEMPERATURE DISPLAY" appears in the multifunction display (A1p13.

Press the button + and -, setting of specific functions and volume control (S111s1) towards (-) so that degrees Fahrenheit (degrees F) is now active in the multifunction display (A1p13). The setting becomes effective immediately.

Recalling the factory settings 

All the settings are erased and the manufacturer default settings are reproduced by the reset described in the following:

IMPORTANT If the instrument lighting dimmer and reset button (A1r1) is not operated within this period of 5 seconds, the display switches back to the basic display. The settings are not then reset.

IMPORTANT If a reset is performed while driving, the setting menu "Driving lights on" in the "Lights" menu and the setting menu "Speed limit (winter tires) in the "Vehicle" menu are not reset for safety reasons.

The message "NOT ALL SETTINGS RESET TO DEFAULTS WHILE DRIVING" appears.

Calling stored fault and warning messages 

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

Confirm malfunction and warning messages 

These messages are divided into 3 categories according to their priority.

Messages in categories 2 and 3 in the multifunction display (A1p13) can be acknowledged by pressing the instrument illumination rheostat and reset button (A1r1) as well as with the system selection button (S110s3) of the multifunction steering wheel and then stored in the fault memory.

Messages of category 1 (highest priority) cannot be acknowledged. Indicator or warning lamps that light up at the same time cannot be acknowledged.

IMPORTANT Certain fault and warning messages are also accompanied by a chime. A fault message and warning message is "Close trunk lid" for example. Such fault messages and warning messages are not stored in the fault memory.

Setting illumination brightness 

The brightness of illumination of the instrument cluster (A1) and the switch and controls illumination can be adapted to individual requirements with the dimmer for instrument, switch and controls illumination (A1r1):

Workshop level of instrument cluster (A1) 

Basic prerequisite is "Circuit 15R ON".

The following steps are necessary in order to reach the workshop level in the multifunction display (A1p13):

Via the scroll forward/back button (S110s1) on the multifunction steering wheel MFL it is possible to change between the individual sub-items:

Switch on dynamometer test mode 

With the dynamometer 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).

With the dynamometer test mode the wheel speeds of the driven axle are reflected in the non-driven axle.

The dynamometer test mode remains active, even if "Circuit 15R ON" has been switched off in the meantime, until it is switched off with the button + and -, setting of specific functions and volume control (S111s1).