The on-board computer is activated as soon as you turn the key to position 1 in the ignition lock. You can use the on-board computer to look up information relating to your vehicle and to make and/or adjust settings.

You can call up the next service due date, select the display language for the instrument cluster and set other functions.

The on-board computer shows information in the multi-function display.

Multi-function steering wheel

	Multi-function display
	Select submenus in the Settings menu Change values Adjust the volume
	Accept or end a call*
	Select menus: scroll back and forth
	Scroll back and forth within a menu

Several functions are combined thematically in the menus.

For example, the Audio menu contains functions for operating the radio or CD player. Or you can use a function to call up information or to change settings for your vehicle.

You can think of the configuration of the menus and the functions within a menu as a circle:

In contrast to the other menus, the Settings menu contains a number of submenus more.

The number of menus depends on the equipment in your vehicle.

Multi-function display

Display area for menus or submenus Status line with outside temperature or speed more Trip meter

Menus and submenus

	Function	Page
	Standard display menu	more
	Digital speedometer (The order of the digital speedometer and the outside temperature depends on the setting in the "Basic display" submenu.)	more
	Tyre pressure loss warning system	more
	Outside temperature	more
	ASSYST service display	more
	Engine oil level*	more
	AMG* menu	more
	Engine oil temperature	more
	On-board voltage	more
	RACETIMER	more
	Audio menu	more
	Radio station	more
	CD player or CD changer*	more
	Navigation* (NAV) menu	more
	Distronic* (distance indicator) menu	more
	Message memory menu (The menu is only visible if there is a display message.) (Fault and warning messages)	more
	Settings menu	more
	Restores factory settings	more
	Selects submenu	more
	Trip computer menu	more
	Consumption statistics	more
	Range	more
	Telephone* menu	more

This is what the displays look like when you scroll through the menus.

The generic terms in the table overview are intended to help you navigate through the menus. The terms themselves are not always displayed in the multi-function display.

In vehicles with Audio 20 the on-board computer displays the Audio and Telephone* menus in English. The language for these menus is not dependent on the language selected for the multi-function display.

The displays for the Audio, Navigation* and Telephone* menus differ slightly on vehicles with Audio 50 APS* and COMAND APS*. The examples in this Owner's Manual apply to vehicles with COMAND APS*.

Standard display menu

Use the buttons on the multi-function steering wheel.

Basic display

Outside temperature Trip meter

You can display the digital speedometer instead of outside temperature more.

• Digital speedometer

  (The order of the digital speedometer and the outside temperature depends on the setting in the "Basic display" submenu.)

• Tyre pressure loss warning system more

• Outside temperature

• ASSYST service display more

• Engine oil level* more

Displaying the digital speedometer or outside temperature

You can use the Basic display submenu more to choose whether the first display in the Standard display menu is the digital speedometer or the outside temperature.

Use the buttons on the multi-function steering wheel.

Example illustration showing the digital speedometer displayed

Digital speedometer Status line with outside temperature Trip meter

AMG* menu

These functions are only available on AMG vehicles.

Use the buttons on the multi-function steering wheel.

Gear indicator Upshift message Engine oil temperature

In the manual gearshift program, the menu is displayed in red when the engine reaches the overrevving range. You will also see shift up instruction . The shift up instruction replaces everything else in the multi-function display until you shift gear.

The engine oil temperature indicator flashes if the engine oil temperature has not yet reached 80 †. Avoid driving at full engine output during this time.

Displaying the on-board voltage

Use the buttons on the multi-function steering wheel.

Gear indicator On-board voltage

RACETIMER

With the RACETIMER you can record times in hours, minutes and seconds.

While you have the RACETIMER displayed, you will not be able to adjust the volume using the and buttons.

Use the buttons on the multi-function steering wheel.

Gear indicator RACETIMER Lap

You can start the RACETIMER when the engine is running or the key is in position 2 in the ignition lock.

The RACETIMER interrupts timing when you stop the vehicle and turn the key to position 1 in the ignition lock. When you turn the key to position 2 or 3 and then press , timing is continued.

Storing the lap time and starting a new lap

It is possible to store a maximum of nine laps.

Gear indicator RACETIMER Fastest lap time (best lap) Lap

Resetting the current lap

Deleting all laps

If you have switched off the engine, the RACETIMER is reset to "0" after 30 seconds. All laps are deleted.

It is not possible to delete a single stored lap on its own.

Overall evaluation

This function is only available if you have stored at least one lap and have stopped the RACETIMER.

RACETIMER overall evaluation Total time driven Top speed Distance covered Average speed

Lap evaluation

This function is only available if you have stored at least two laps and have stopped the RACETIMER.

Lap Lap time Top speed Lap length Average lap speed

Audio menu

Use the functions in the Audio menu to operate the audio equipment. If no audio equipment is switched on, the AUDIO OFF (Audio 50 APS* and COMAND APS*: Audio off) message appears in the multi-function display.

In vehicles with Audio 50 APS* and Russian as a language setting, the on-board computer displays this menu in English.

Selecting a radio station

You can only store new stations with the audio system. Please refer to the separate operating instructions for notes on how to do this.

Use the buttons on the multi-function steering wheel.

Wave band Station

Operating the CD player or CD changer*

MP3 CDs can only be played in the CD changer* drive.

Use the buttons on the multi-function steering wheel.

Audio 20 display

Current CD (if CD changer* is installed) Current track

Audio 50 APS* and COMAND APS* display

Current CD (if CD changer* is installed) Current track

Navigation* menu

In the Navigation menu, the multi-function display shows information from the navigation system.

In vehicles with Audio 50 APS* and Russian as a language setting, the on-board computer displays this menu in English.

Use the buttons on the multi-function steering wheel.

Navigation system deactivated

The NAV off message appears in the multi-function display.

Route guidance inactive

The multi-function display shows the direction of travel, e.g. heading NE.

Route guidance active

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Distronic* menu

You can read the current Distronic settings in the Distronic menu. more

Message memory menu

Previous display messages can be called up in the Message memory menu. You will only see the Message memory menu if there are any display messages.

Switching off the ignition clears the Message memory except for the highest priority display messages. The on-board computer will delete these display messages only after the reason for the message has been rectified.

Displaying messages

Use the buttons on the multi-function steering wheel.

Settings menu

There are two functions in the Settings menu: the To reset: Press reset button for 3 seconds function, which you can use to restore most settings to the factory settings. And there are submenus via which you can make individual settings for your vehicle.

Restoring to factory settings

For safety reasons, not all functions are reset: permanent Speedtronic can only be set in the Vehicle submenu. The Headlamp mode function in the Lighting submenu is only reset if the vehicle is stationary.

Use the buttons on the multi-function steering wheel.

Submenus in the Settings menu

Use the buttons on the multi-function steering wheel.

The following tables show the settings you can make in the individual submenus. You will find additional information on the pages shown.

Instrument cluster submenu
Unit of measurement for distancemore Languagemore Status line displaymore Basic displaymore

Time/date submenu (This function is not available on vehicles with Audio 50 APS* or COMAND APS*.)
Datemore Timemore

Lighting submenu
Constant headlamp mode more Surround lighting more Exterior lighting delayed switch-off more Interior lighting delayed switch-off more

Vehicle submenu
Permanent Speedtronic more Radio station selection more Automatic locking more

Heater* submenu
Select the switch-on time for the auxiliary heating* more Change the switch-on time for the auxiliary heating* more

Convenience submenu*
Easy-entry/exit feature *more Fold in the exterior mirrors when locking* more

Selecting the unit of measurement for distance

• the total distance recorder and the trip meter

• The trip computer

• the digital speedometer

  (Vehicles for the United Kingdom: the digital speedometer always displays km/h.)

• cruise control

• Speedtronic

• Distronic*

Use the buttons on the multi-function steering wheel.

Selecting the language

Use the buttons on the multi-function steering wheel.

Selecting the status line display

Vehicles for the United Kingdom: this function is not available.

Use the buttons on the multi-function steering wheel.

Selecting the basic display

Vehicles for the United Kingdom: this function is not available.

Use the Basic display function to set whether the digital speedometer or the outside temperature appears first in the Standard display. You will see the display you have not selected if you scroll through the Standard display menu more.

Use the buttons on the multi-function steering wheel.

Setting the date

Vehicles with a navigation system* (Audio 50 APS* or COMAND APS*): this function is not available. Your navigation system* receives the date from a GPS satellite.

Use the buttons on the multi-function steering wheel.

Setting the time

Vehicles with a navigation system* (Audio 50 APS* or COMAND APS*): this function is not available. Your navigation system* receives time signals from a GPS satellite. You must set the time zone once on your Audio 50 APS* or COMAND APS*. Refer to the separate Operating Instructions for notes on how to do this.

Use the buttons on the multi-function steering wheel.

Setting constant headlamp mode

If you have set the constant headlamp mode and the light switch is in position or, the side lamps, dipped-beam headlamps and licence plate lighting are switched on automatically when the engine is running. Turning the light switch to a different position switches on the corresponding lights.

For safety reasons, it is only possible to set this function when the vehicle is stationary. In countries in which constant headlamp mode is a legal requirement, constant is the factory setting.

Use the buttons on the multi-function steering wheel.

For safety reasons, you cannot reset the Headlamp mode function to the factory setting while you are driving. If you attempt to do so, the following message will appear in the multi-function display: Settings Cannot be completely reset to factory settings while driving.

Switching the surround lighting on or off

• The side lamps

• The tail lamps

• The licence plate lighting

• The front foglamps

The surround lighting switches off automatically if you open the driver's door or after 40 seconds.

Use the buttons on the multi-function steering wheel.

Activating or deactivating the exterior lighting delayed switch-off

Using the Headlamp switch-off delay function, you can set whether the exterior lighting should remain on when it is dark for 15 seconds after the doors are closed. If none of the doors are opened after the engine is switched off or if an open door is not closed, the exterior lighting goes out after 60 seconds.

• The side lamps

• The tail lamps

• The licence plate lighting

• The front foglamps

You can reactivate this function by opening a door within 10 minutes.

Use the buttons on the multi-function steering wheel.

To temporarily deactivate the delayed switch-off:

Activating or deactivating the interior lighting delayed switch-off

When it is dark, the Interior lighting delayed switch-off function allows you to set whether the interior lighting should remain on for 10 seconds after the key is removed from the ignition lock.

Use the buttons on the multi-function steering wheel.

Setting the radio station selection

You can use the Audio search function to set whether a new station is to be searched for or whether a stored station is to be selected every time you operate the radio*. If the Frequency setting is selected, the station search is started. If the Memory setting is selected, the next stored station is selected.

Use the buttons on the multi-function steering wheel.

Activating/deactivating the automatic door lock

The Automatic door lock function allows you to set whether your vehicle will lock centrally from a speed of about 15 km/h upwards.

Use the buttons on the multi-function steering wheel.

Selecting the swit