
Setting the time and date
The vehicle must be stationary. Use the buttonsin the instrument cluster.
XPress Èto select the Settingsmenu.
XPress3to select the time and date display.
XPress forg to set the hours and press 3
to confirm.
XPress forg to set the minutes and press
3 to confirm.
XPress forg to set the day and press 3to
confirm.
XPress forg to set the month and press 3
to confirm.
XPress forg to set the year and press 3to
confirm.
The display shows the Settings
menu again.
On-board computer (vehicles with
steering wheel buttons)
Operating the on-board computer
Overview
:Display
;Right control panel
=Left control panel
XTo activate the on-board computer: turn
the SmartKey to position 1in the ignition lock.
You can control the displays and the settings in the on-board computer using the steering wheel
buttons in left control panels =. Using thesteering wheel buttons in right control panel
;
you can control the functions of the audio sys-
tem and switch on voice-operated control of the
navigation system (see the separate operating
instructions).
Steering wheel buttons
Left control panel on the steering wheel
=
;RCalls up the menu bar in the dis-
play
RSelects a menu
9
:Press briefly:
RScrolls through lists
RSelects a submenu or function
RIn the Audiomenu: opens the
track or station list and selects a
station or an audio track
RIn the Tel(Telephone) menu:
switches to the phone book and
selects a name or a telephone
number
9
:Press and hold:
RQuickly scrolls through all lists
RIn the Audiomenu: selects a sta-
tion or an audio track using rapid
scrolling.
RIn the Tel(telephone) menu:
starts rapid scrolling if the phone
book is open
aRConfirms the display message
RIn all menus: confirms the selected
entry in the list or the display
RIn the Audiomenu: stops the sta-
tion search
RIn the Tel(telephone) menu:
switches to the phone book and
starts dialing the selected number
178On-board computer (vehicles with steering wheel buttons)
On-board computer and displays 

%Press briefly:
RBack
RIn theAudiomenu: exits the track
or station list
RHides display messages
RExits the telephone book/redial
memory
RVehicles with a navigation system:
switches off voice-operated con-
trol of the navigation system (see
the manufacturer's operating
instructions)
%Press and hold:
RCalls up the standard display in the
Tripmenu
Right control panel on the steering wheel
6RMakes or accepts a call
RSwitches to the redial memory
~RRejects or ends a call
RExits the telephone book/redial
memory
W
XRAdjusts the volume
óRVehicles with a navigation system:
switches on voice-operated con-
trol of the navigation system (see
the manufacturer's operating
instructions)
8RMute
iThe audio devices, telephone and voice-
operated control using the steering wheel
buttons in the right control panel only func-
tion with a Mercedes-Benz audio or naviga-
tion system. If you are using an audio or nav-
igation system from another manufacturer,
the described functions may be restricted or
not available at all.
Display
Instrument cluster display
:
Clock (Ypage 189)
;Ä COLLISION PREVENTION ASSIST dis-
tance warning function (Ypage 146)
j Active Parking Assist (
Ypage 156)
=Permanent display: outside temperature or
speed (Ypage 188)
120
km/h!(only for certain countries) max-
imum permissible speed exceeded
?Menu bar
Outside temperature (only if header Fdis-
plays the additional speedometer)
ADrive program (Ypage 130)
BTransmission position (Ypage 129)
CGearshift recommendation (Ypage 133)
DStatus area
EDisplay panel for display messages, menus
and menu bar
FHeader
XTo call up menu bar ?in the display
panel: press the =or; steering wheel
button.
The menu bar is faded out after a few sec-
onds.
Display panel Eshows the selected menu or
submenu and display messages.
On-board computer (vehicles with steering wheel buttons)179
On-board computer and displays
Z 

XPressato confirm.
The current status is shown.
XTo activate/deactivate: pressaagain.
If the å warning lamp in the instrument
cluster lights up when the vehicle is ready to
drive, ESP
®is deactivated.
If the ÷ warning lamp lights up continuously,
ESP
®is not available due to a malfunction.
Observe the information on warning lamps
(
Ypage 224) and display messages
(Ypage 210).
Activating/deactivating the distance
warning function
Using the steering wheel buttons
XPress =or; to select the Assist.menu.
XPress9or: to select DistanceWarning.
XPressato confirm.
The current status is shown.
XTo activate/deactivate: press theabut-
ton again.
If the distance warning function of COLLISION
PREVENTION ASSIST is activated, the display
shows the Äsymbol in the header.
At speeds up to approx 20 mph (30 km/h),
the display in vehicles with Active Parking
Assist first shows the ístatus indicator.
Only up to a speed of about 20 mph
(30 km/h) does the display show the Ä
symbol instead of the ístatus indicator.
Further information can be found under "COL-
LISION PREVENTION ASSIST" (
Ypage 146).
Setting ATTENTION ASSIST
Using the steering wheel buttons
XPress =or; to select the Assist.menu.
XPress:or9 to select AttentionAssist.
XPressato confirm.
The current setting is displayed.
XTo change the setting: pressaagain.
XPress :or9 to set Deactivated,
Standardor Sensitive.
XPress ato confirm the choice.
If ATTENTION ASSIST is activated, the À
symbol is shown in the status area of the dis- play. The selection
Standard
orSensitivesets the sensitivity with which the system
determines the attention level.
Further information can be found under "ATTEN-
TION ASSIST" (
Ypage 152).
Activating/deactivating Blind Spot
Assist
Using the steering wheel buttons
XPress =or; to select the Assist.menu.
XPress:or9 to select Blind SpotAssist.
XPressato confirm.
The current status is shown.
XTo activate/deactivate: press theabut-
ton again.
Further information can be found under "Blind
Spot Assist" (
Ypage 148).
Setting Lane Keeping Assist
Using the steering wheel buttons
XPress =or; to select the Assist.menu.
XPress:or9 to select LaneKeepingAssist.
XPressato confirm.
The current selection StandardorAdaptiveis displayed.
XTo change the setting: pressaagain.
Further information can be found under "Lane
Keeping Assist" (
Ypage 150).
Service menu
On-board computer (vehicles with steering wheel buttons)187
On-board computer and displays
Z 

Depending on the vehicle’s equipment, you have
the following options in theServicemenu:
RCalling up display messages in the message
memory (Ypage 205)
RRestarting the tire pressure loss warning sys-
tem or checking the tire pressure electroni-
cally (
Ypage 286)
RCalling up the service due date (ASSYST
PLUS) (Ypage 260)
Settings menu
Introduction
Depending on the vehicle’s equipment, you have
the following options in the Settingsmenu:
Rchanging the display options in the Inst.Clustersubmenu (Ypage 188)
Rchanging the time and date in theTime/Datesubmenu (Ypage 189)
Rchanging the exterior and interior lighting set-
tings in theLightssubmenu (Ypage 189)
Ractivating/deactivating or adjusting vehicle
functions in the Vehiclesubmenu
(Ypage 190)
Rresetting the settings to Factory Setting(Ypage 190)
Instrument cluster submenu
Selecting the unit for the distance
With theDisplay Unit Speed-/Odometer:function, you can select whether the display
shows certain information in kilometers or
miles. Use the steering wheel buttons.
XPress
=or; to select the Settingsmenu.
XPress:or9 to select Inst. Clus‐ter.
XPressato confirm.
XPress :or9 to select the DisplayUnit Speed-/Odometer:function.
The display indicates the selected kmor
Milessetting.
XPress ato change the setting.
The unit for the distance will be selected for:
RDigital speedometer in the Tripmenu
ROdometer and trip odometer
RTrip computer
RCurrent consumption and range
RNavigation instructions in the Navimenu
RCruise control
RService interval display
Setting the display language
Using the steering wheel buttons
XPress=or; to select the Settingsmenu.
XPress:or9 to select Inst. Clus‐ter.
XPressato confirm.
XPress :or9 to select Language:.
The display shows the current language selec-
tion for all display messages.
XPress ato change the setting.
XPress :or9 to select the desired lan-
guage.
XPress the abutton to save the selection.
Selecting the permanent display function
Using the Permanent Display:function, you
can switch the display in the header between
outside temperature and speed.
If the display shows the speed in the header, the
display shows the outside temperature with the
odometers (
Ypage 180). The additional speed-
ometer unit in the header is always inverse to
the speedometer unit.
188On-board computer (vehicles withsteering whee lbu ttons)
On-board computer and displays 

Engine
Display messagesPossible causes/consequences andMSolutions
#An additional warning tone sounds. The battery is not being charged.
Possible causes:
Rfaulty alternator
Rtorn poly-V-belt
Ra malfunction in the electronics
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
!Do not continue driving. The engine could otherwise overheat.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XConsult a qualified specialist workshop.
?
Coolant Too Hot:Stop Vehicle TurnEngine Off
An additional warning tone sounds. The coolant is too hot.
GWARNING
Never drive with an overheated engine. Driving when the engine is
overheated can cause fluids which may have leaked into the engine
compartment to catch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the hood.
There is a risk of injury.
XStop the vehicle immediately, paying attention to road and traffic
conditions, and switch off the engine.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XWait until the engine has cooled down.
XMake sure that the air supply to the radiator is not obstructed, by
frozen slush for example.
XDo not start the engine again until the display message goes out and
the coolant temperature is below the maximum value specified. The
engine could otherwise be damaged.
XMonitor the ?coolant temperature gauge in the instrument
cluster.
XIf the temperature increases again, visit a qualified specialist work-
shop immediately.
Under normal operating conditions and with the specified coolant
level, the ?gauge may rise to 248 ‡ (120 †).
214Display messages (vehicles with steering wheel buttons)
On-board computer and displays 

Display messagesPossible causes/consequences andMSolutions
ÒThe tailgateis open .
XCloseth etailgate.
ÑThe rear door is open .
XCloseth erear door(s).
ÓAn additional warning tone sounds. The hoo dis open .
GWARNIN G
The open hoo dmay then bloc kyour vie wwhen th evehicl eis in motion .
There is aris kof an accident.
XStop th evehicl eimmediately, payin gattention to roa dand traffic
conditions.
XSecur eth evehicl eto preven tit from rollin gaway (Ypage 135).
XCloseth ehood.
CAn additional warning tone sounds while th evehicl eis in motion .The
display shows th eopen door(s).
XClos eall doors.
Ð
Power Steering Mal ‐function See Oper.Manual
An additional warning tone sounds. The steering powe rassistanc e
could be malfunctioning .You may need to steer mor eforcefully.
XCarefully continu eto aqualified specialist workshop and hav eth e
steering checke dimmediately.
Â
Obtain aNew Key
The ke yneeds to be replaced.
XVisit aqualified specialist workshop .
Phone No ServiceYour vehicleis outside th enetwork provider' stransmitter/receiver
range.
¥
Check Washer Fluid
The washer flui dlevel in th ewasher flui dreservoir has dropped belo w
th eminimum .
XAddwasher flui d (Ypage 258).
Indicatorand warning lamps in the instrume nt cluster
General notes
Whe nswitching on th eignition ,som esystems carry out aself-test .Some indicator and warning
lamp smay temporarily tur non or start to flash. This is no tan indication of any problem .Only when
these indicator and warning lights tur non or start flashin gafter th eengin ehas started or during th e
journey has amalfunction occurred .
Indicator and warning lamps in the instrument cluster221
On-board computer and displays
Z 

Seat belts
Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
üNAfter starting the engine, the red seat belt warning lamp lights up or flashes. A
warning tone may also sound.
Only for certain countries: the red seat belt warning lamp lights up for a maximum
of 6 seconds after the ignition is switched on.
The seat belt warning lamp reminds the driver and front-passenger to fasten their
seat belts.
XFasten seat belt (Ypage 48).
üN The red seat belt warning lamp lights up after the engine starts, as soon as the
driver's or the front-passenger door is closed.
The driver or front-passenger has not fastened their seat belt.
XFasten seat belt (Ypage 48).
The warning lamp goes out.
On vehicles with the Occupant Classification System (OCS), there are objects on
the front-passenger seat.
XRemove the objects from the front-passenger seat and store them in a safe
place.
The warning lamp goes out.
üN The red seat belt warning lamp flashes and an intermittent audible warning
sounds.
The driver or front passenger has not fastened their seat belt. At the same time, you
are driving faster than 15 mph (25 km/h) or have briefly driven faster than 15 mph
(25 km/h).
XFasten seat belt (Ypage 48).
The warning lamp goes out and the intermittent audible warning ceases.
On vehicles with the Occupant Classification System (OCS), there are objects on
the front-passenger seat. At the same time, you are driving faster than 15 mph
(25 km/h) or have briefly driven faster than 15 mph (25 km/h).
XRemove the objects from the front-passenger seat and store them in a safe
place.
The warning lamp goes out and the intermittent warning tone ceases.
222Indicator and warning lamps in the instrument cluster
On-board computer and displays 

Safety systems
Warning/
indicator
lampNSignal type
Possible causes/consequences and M
Solutions
$J
òN$ (USA only) or J(Canada only): the ABS and brake warning lamps are
lit while the engine is running.
EBD is unavailable due to a malfunction. ABS, BAS, hill start assist and ESP
®as well
as its driving safety systems, for example, are therefore also unavailable.
ATTENTION ASSIST is deactivated and other driving systems could be automati-
cally deactivated.
GWARNING
The brake system continues to function normally, but without the functions listed
above. The wheels could therefore lock prematurely if you brake hard, for example.
This causes steerability and braking to be greatly impaired. The braking distance
may increase in emergency braking situations.
If ESP
®is not operational, ESP®will not stabilize the vehicle.
There is an increased risk of skidding and accidents.
XSwitch the engine off, wait briefly and start the engine again.
XCheck if the display message has disappeared and ESP®is operational.
XIf the display message continues to be displayed:
RDrive on with care.
RVisit a qualified specialist workshop immediately.
$JN The red $(USA only) or J(Canada only) brake system warning lamp is lit
while the engine is running. An additional warning tone sounds.
There is insufficient brake fluid in the brake fluid reservoir.
GWARNING
Braking performance can be impaired.
There is a risk of an accident.
XStop the vehicle immediately, paying attention to road and traffic conditions. Do
not continue driving under any circumstances.
XSecure the vehicle to prevent it from rolling away (Ypage 135).
XDo not add brake fluid. Adding more will not remedy the malfunction.
XConsult a qualified specialist workshop.
XObserve the display messages.
Indicator and warning lamps in the instrument cluster223
On-board computer and displays
Z