
Using the
0074,0075,0079or0045 adjustment but-
tons, you can select the following functions:
R Calling up the service due date
(Y page 260)
R Checking the oil level (Y page 252)
R Checking the DEF supply (Y page 184)
R Preselecting/setting the auxiliary heating
switch-on time (Y page 124)
R Tire pressure monitor (Y page 293)
R Setting the time (Y page 185)
R Activating/deactivating Highbeam Assist
(Y page 194)
R Setting the daytime running lamps
(Y page 185)
Setting the time X
Turn the key to position 2in the ignition
lock.
X Press the 0079menu button repeatedly until
the hours figure flashes.
X Press the 0074or0075 button to set the hour.
X Press the 0045reset button.
The minute display flashes.
X Press the 0074or0075 button to set the minute.
i If you keep the 0074or0075 button pressed,
the value will change continuously.
Activating/deactivating Highbeam
Assist X
Turn the key to position 2in the ignition
lock.
X Press the 0079menu button repeatedly until
the 00CE indicator lamp flashes and the
on
on orOFF
OFF message appears in the display.
X Use the 0074or0075 button to switch High-
beam Assist on/off.
Switching the daytime running lamps
on/off If you switch the daytime running lights
ON ON,
the daytime running lights will automatically
light up when the engine is running. For safety reasons, it is only possible to
change this setting when the vehicle is sta-
tionary. The factory setting is
ON ONin countries
in which constant headlamp mode or daytime
running lights are mandatory.
X Turn the key to position 2in the ignition
lock.
X Press the 0079menu button repeatedly until
the 0058 indicator lamp flashes and the
on on orOFF
OFF message appears in the display.
X Press the 0074or0075 button to activate or
deactivate the daytime running lamps.
i USA only:
If you turn the light switch to 0060or
0058, the corresponding light switches on.
If you turn the light switch to 0058, the
daytime running lamps remain switched
on.
Canada only:
If you turn the light switch to 0058, the low-
beam headlamps switch on. If you turn the
light switch to 0060or0058, the daytime
running lamps remain switched on. On-board computer (vehicles without steering wheel buttons)
185On-board computer and displays Z 

Using the steering wheel buttons
X
Switch on the audio equipment (see the
separate operating instructions).
X Press the 0080or007F button repeatedly
until the station selected appears in the
display.
The type of search depends on the setting
of the radio station selection
(Y page 196): the nearest stored station
will be selected or the station search starts.
X Press the 0041or0068 button to select the
desired station.
i You can only store new stations on the
audio system itself. See the separate oper-
ating instructions.
You can also operate the audio equipment
in the same way as usual.
Operating the CD player 0043
Current CD (with CD changer)
0044 Current track
Using the steering wheel buttons
X Switch on the audio equipment and select
the CD player (see the separate operating
instructions).
X Press the 0080or007F button repeatedly
until the settings for the current CD appear
in the display.
X Press the 0041or0068 button to select a
CD track. Settings menu
Introduction In the
Settings menu, the following options
and submenus are available:
R Resetting all settings
R Resetting the functions of a submenu
R Instrument cluster (Y page 191)
- Units and language settings
- Status bar settings
R Clock(Y page 193)
R Lighting (Y page 194)
- Switching surround lighting on/off
- Switching the daytime running lamps
on/off
- Setting the exterior lighting delayed
switch-off
- Activating/deactivating Highbeam
Assist
R Vehicle (Y page 196)
- Setting the radio station selection
- Setting the windshield wiper sensitivity
R Stationary heating or auxiliary heating
(Y page 124)
R Convenience (Y page 196)
- Key-dependent settings
i For safety reasons, it is not possible to
reset all of the functions while the vehicle
is in motion. For example, in the Light‐ Light‐
ing
ing submenu, the Daytime runn. lamps
Daytime runn. lamps
function remains unchanged.
Resetting all settings Settings menu190
On-board computer (vehicles with steering wheel buttons)On-board computer and displays 

When the
Settings
Settings message is displayed,
you can reset all functions of the submenu to
the factory settings.
Using the steering wheel buttons
X Press the 0080or007F button repeatedly
until the Settings
Settings menu appears in the
display.
X Press and hold the 0045reset button for
approximately 3 seconds.
You will see a message in the display
prompting you to press the 0045reset button
again to confirm.
X Press the 0045reset button again.
The functions in all submenus are reset to
the factory settings.
i If you want to retain the settings, do not
press the 0045reset button a second time.
The Settings
Settings menu appears again after
approximately 5 seconds.
Resetting the functions of a submenu You can individually reset the functions of
each submenu to the factory settings.
Using the steering wheel buttons
X Press the 0080or007F button repeatedly
until the Settings
Settings menu appears in the
display.
X Press the 0063button to switch to the sub-
menu selection.
X Press the 0081or0082 button to select a
submenu.
X Press and hold the 0045reset button for
approximately 3 seconds.
You will see a message in the display
prompting you to press the 0045reset button
again to confirm.
X Press the 0045reset button again.
All functions in the submenu are reset to
the factory settings.
i If you want to retain the settings, do not
press the 0045reset button a second time. The
Settings
Settings menu appears again after
approximately 5 seconds.
Selecting submenus You will see the collection of submenus.
There are more submenus than can be dis-
played at the same time.
Using the steering wheel buttons
X
Press the 0080or007F button repeatedly
until the Settings Settings menu appears in the
display.
X Press the 0063button to switch to the sub-
menu selection.
X Press the 0081or0082 button to select a
submenu.
The submenu currently selected is high-
lighted.
X Press the 0063button to select the func-
tion within a submenu.
X Change the setting by pressing the 0081or
0082 button.
The changed setting is saved.
Instrument cluster submenu Selecting the unit for temperatureOn-board computer (vehicles with steering wheel buttons)
191On-board computer and displays Z 

Selecting the time format
Using the steering wheel buttons
X
Press the 0080or007F button repeatedly
until the Settings
Settings menu appears in the
display.
X Press the 0063button to switch to the sub-
menu selection.
X Press the 0081or0082 button to select the
Clock/Date
Clock/Date submenu.
X Press the 0063button to select the
12/24 h 12/24 h function.
The selection marker is on the current set-
ting.
X Press the 0081or0082 button to select the
12 h
12 h or24 h
24 h clock format.
Lighting submenu Activating/deactivating Highbeam Assist
Using the steering wheel buttons
X Press the 0080or007F button repeatedly
until the Settings
Settings menu appears in the
display.
X Press the 0063button to switch to the sub-
menu selection.
X Press the 0081or0082 button to select the
Lighting
Lighting submenu.
X Press the 0063button to select the High‐ High‐
beam Assist
beam Assist function.
The selection marker is on the current set-
ting.
X Use the 0081or0082 button to switch
Highbeam Assist On
On orOff
Off .
i For safety reasons, it is not possible to
reset the Highbeam
Highbeam Assist
Assistfunction to the
factory settings during a journey. You will
see the following message in the display: Setting only possible at stand‐ Setting only possible at stand‐
still still.
For further information about Highbeam
Assist, see (Y page 97).
Switching the daytime running lamps on/
off If you switch the daytime running lamps func-
tion to
On On, the daytime running lamps will
automatically light up when the engine is run-
ning.
For safety reasons, it is only possible to
change this setting when the vehicle is sta-
tionary. The factory setting is On Onin countries
in which daytime running lamp mode or day-
time running lamps are mandatory.
Using the steering wheel buttons
X Press the 0080or007F button repeatedly
until the Settings Settings menu appears in the
display.
X Press the 0063button to switch to the sub-
menu selection.
X Press the 0081or0082 button to select the
Lighting
Lighting submenu.
X Press the 0063button to select the Day‐
Day‐
time runn. lamps
time runn. lamps function.
The selection marker is on the current set-
ting.
X Press the 0081or0082 button to switch
the daytime running lamps On OnorOff
Off.
i If you turn the light switch to 0060or
0058, the corresponding lamp switches on.
If you turn the light switch to 0058, the
daytime running lamps remain switched
on.
i For safety reasons, it is not possible to
reset the Daytime runn. lamps Daytime runn. lamps function
to the factory setting while the vehicle is in 194
On-board computer (vehicles with steering wheel buttons)On-board computer and displays 

X
Press the 0063button to select the Key
Key
function.
The selection marker is on the current set-
ting.
X Press the 0081or0082 button to activate
or deactivate key dependency. Trip computer menu
General notes You can call up or reset statistical data for the
vehicle in the Trip computer menu.
i When you call up the trip computer again,
it displays the last function called up.
The units of the statistical information dis-
played are set permanently for each spe-
cific country, and are therefore independ-
ent of the units selected in the Settings
Settings
menu.
Trip computer "After start" or "After
reset" Example: "After start" trip computer
0043
Distance
0044 Time
0087 Average speed
0085 Average fuel consumption
Using the steering wheel buttons
X Press the 0080or007F button to select
After start
After start.
Or
X Press the 0041or0068 button to select
After reset After reset.
The values in the After start
After startsubmenu
refer to the start of the journey. The values in the
After reset
After reset submenu are calculated
from the last time the trip computer was
reset.
The After start After start trip computer function is
automatically reset if:
R the ignition has been switched off for more
than four hours.
R 999 hours have been exceeded.
R 9,999 miles have been exceeded.
The After reset
After reset trip computer is automati-
cally reset if the value exceeds 9,999 hours
or 99,999 miles.
i If you turn the key to position 0in the
ignition lock or remove it, all the values are
reset after approximately four hours.
The values will not be reset if you turn the
key back to position 1or 2during this time.
Calling up the range Using the steering wheel buttons
X
Press the 0080or007F button to select
After start After start.
X Select Range
Rangeusing the 0041or0068 but-
ton.
The approximate distance which can be
covered with the tank's current contents
and your current style of driving is shown.
i If there is only a small amount of fuel left
in the fuel tank, the 00B5Please refuelPlease refuel
message is shown instead of the range.
Resetting the trip computer Using the steering wheel buttons
X
Press the 0080or007F button to select
After start After start.
X Press the 0041or0068 button to select the
function you would like to reset.
X Press and hold the 0045reset button until the
values are reset to "0". On-board computer (vehicles with steering wheel buttons)
197On-board computer and displays Z 

Vehicles with steering wheel buttons
The on-board computer shows warnings, mal-
functions or additional information in the dis-
play. A warning tone sounds with certain dis-
play messages. Display messages of a high
priority are shown in red.
Please respond in accordance with the dis-
play messages and follow the additional
notes in this Operator's Manual.
You can hide low-priority display messages by
pressing the 0080,007F,0041or0068 but-
ton on the steering wheel or the 0045reset but-
ton.
You cannot hide display messages of the
highest priority. These messages will con-
tinue to be shown in the display until their
cause has been eliminated.
The on-board computer stores certain display
messages in the message memory
(Y page 200).
The following shows all the messages that
could appear in the display, arranged alpha-
betically. Message memory
The on-board computer only records and
shows malfunctions and warnings from cer-
tain systems. Therefore, make sure that your
vehicle is safe to use. You could cause an
accident by driving an unsafe vehicle.
The on-board computer stores certain display
messages. In the Message memory menu,
you can call up stored display messages.
Using the steering wheel buttons
X Press the 0080or007F button repeatedly
until the number of stored display mes- sages, e.g.
2
2 messages messages, appears in the dis-
play.
If no malfunctions have occurred, the No No
messages
messages message appears.
X Scroll through the stored display messages
with the 0041or0068 button.
X To exit the message memory menu:
press the 0080or007F button.
When you switch off the ignition, all display
messages are deleted from the message
memory. 200
Display messagesOn-board computer and displays 

Reconnecting the starter battery
!
Always connect the battery in the order
described below. Never swap the terminal
clamps. You may otherwise damage the
vehicle electronics.
X Fold the positive terminal clamp with the
pre-fuse box down to the terminal.
X Connect the positive terminal clamp.
X Attach the cover to the positive terminal.
X Connect the negative terminal clamp.
X Position battery cover 0043so that
screws 0044are positioned over the large
recesses.
X Slide battery cover 0043in the direction of
travel into the smaller recesses.
X Tighten screws 0044.
X Install the floor covering in the driver's foot-
well (Y page 261).
Carry out the following work after connecting
the battery:
X Reset the side windows (Y page 79).Removing/installing the starter bat-
tery
Removing the starter battery X
Disconnect the battery ( Ypage 262).
X Pull breather hose with connector
bracket 0044from connection 0043on the
degassing cover. X
Loosen the bolts holding retainer 0087, which
prevents the battery from moving around. X
Pull retainer 0087upwards.
X Slide the battery from its anchorage in the
direction of travel.
X Fold the bar of the battery upwards and
remove the battery from the battery case.
Installing the starter battery X
Insert the battery into the battery case.
X Fold down the bar of the battery.
X Slide the battery into its anchorage in the
opposite direction to the direction of travel.
X Insert retainer 0087.
X Tighten the bolts on retainer 0087which
holds the battery in place.
X Attach breather hose with connector
bracket 0044to connection 0043of the venti-
lation cover.
X Connect the battery (Y page 262). Battery
263Maintenance and care Z 

Disconnecting and connecting the
additional battery (engine compart-
ment)
Important safety notes G
WARNING
During the charging process, a battery produ-
ces hydrogen gas. If a short circuit occurs or
sparks are created, the hydrogen gas can
ignite. There is a risk of an explosion.
R Make sure that the positive terminal of a
connected battery does not come into con-
tact with vehicle parts.
R Never place metal objects or tools on a bat-
tery.
R It is important that you observe the descri-
bed order of the battery terminals when
connecting and disconnecting a battery.
R When jump-starting, make sure that the
battery poles with identical polarity are
connected.
R It is particularly important to observe the
described order when connecting and dis-
connecting the jumper cables.
R Never connect or disconnect the battery
terminals while the engine is running.
Disconnecting the additional battery !
Switch off the engine and remove the key
from the ignition lock before you loosen or
disconnect the terminal clamps. You may
otherwise destroy electronic components
such as the alternator.
Always disconnect the starter battery in the
battery case in the driver's footwell first.
! Always disconnect the battery in
the order described below. Never swap the
terminal clamps. You may otherwise dam-
age the vehicle electronics. Additional battery in the engine compartment
X Switch off all electrical consumers.
X Switch off the engine and remove the key
from the ignition lock.
X Open the hood (Y page 250).
X First loosen and remove the negative ter-
minal clamp so that it is no longer in contact
with the terminal.
X Remove the cover from the positive termi-
nal.
X Loosen and remove the positive terminal
clamp.
Connecting the additional battery !
Always connect the battery in the order
described below. Never swap the terminal
clamps. You may otherwise damage the
vehicle electronics.
X Connect the positive terminal clamp.
X Attach the cover to the positive terminal.
X Connect the negative terminal clamp.
X Close the hood.
Carry out the following work after connecting
the battery:
X Reset the side windows ( Ypage 79). 264
BatteryMaintenance and care