Page 14 of 341
12In briefExterior lightingAUTO:automatic light control
switches automatically
between daytime running
light and headlight8:sidelights9:headlights
Automatic light control 3 130.
Fog lights
Press light switch:
>:front fog lightsr:rear fog light
Lighting 3 129.
Headlight flash, high beam and
low beamheadlight flash:pull leverhigh beam:push leverlow beam:push or pull lever
High beam 3 130.
Headlight flash 3 131.
LED headlights 3 133.
High beam assist 3 133.
Turn and lane-change signalslever up:right turn signallever down:left turn signal
Turn and lane-change signals
3 134, Parking lights 3 135.
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Keys, doors and windows21Basic settingsSome settings can be changed in theSettings menu in the Info-Display.Vehicle personalisation 3 123.
Radio remote control battery
replacement
Replace the battery as soon as the
range reduces.
Batteries do not belong in household
waste. They must be disposed of at
an appropriate recycling collection
point.
Key with foldaway key section
Extend the key and open the unit.
Replace the battery (battery type CR 2032), paying attention to the
installation position. Close the unit
and synchronise.
Key with fixed key section
Have the battery replaced by a
workshop.
Memorised settings
Whenever the ignition is switched off,
the following settings are
automatically memorised by the
remote control unit:
● lighting
● Infotainment system
● central locking system
● Sport mode settings
● comfort settings
The saved settings are automatically
used the next time the ignition is
switched on with the memorised key
of the remote control unit 3 198.
A precondition is that Personalisation
by Driver is activated in the personal
settings of the Info-Display. This must
be set for each remote control unit
which is used. The status change is
available only after locking and
unlocking the vehicle.
Vehicle personalisation 3 123.
Central locking system Unlocks and locks doors, load
compartment and fuel filler flap.
Page 24 of 341
22Keys, doors and windowsA pull on an interior door handle
unlocks the respective door. Pulling
the handle once more opens the door.
Notice
In the event of an accident in which
airbags or belt pretensioners are
deployed, the vehicle is
automatically unlocked.
Notice
A short time after unlocking with the
remote control, the doors are
relocked automatically if no door has
been opened.
Unlocking
Press c.
Two settings are selectable:
● To unlock only the driver's door, load compartment and fuel filler
flap, press c once. To unlock all
doors, press c twice.
● Press c once to unlock all doors,
load compartment and fuel filler
flap.
The setting can be changed in the
Settings menu in the Info-Display.
Vehicle personalisation 3 123.
The setting can be saved for the key
being used. Memorised settings
3 21.
Locking
Close doors, load compartment and
fuel filler flap.
Press e.
If the driver's door is not closed properly, the central locking system
will not work.
Page 61 of 341

Seats, restraints59
If the control indicator ONV
illuminates for approx. 60 seconds
after the ignition is switched on, the
front passenger airbag system will
inflate in the event of a collision.
If both control indicators are
illuminated at the same time, there is
a system failure. The status of the
system is not discernible, therefore
no person is allowed to occupy the
front passenger seat. Contact a
workshop immediately.
Change status only when the vehicle
is stopped with the ignition off.
Status remains until the next change.
Control indicator for airbag
deactivation 3 111.Child restraints
Child restraint systems9 Danger
If using a rear-facing child restraint
system on the front passenger
seat, the airbag system for the
front passenger seat must be
deactivated. This also applies to certain forward-facing child
restraint systems as indicated in
the tables 3 62.
Airbag deactivation 3 58 , Airbag label
3 53.
We recommend a child restraint
system which is tailored specifically to
the vehicle. For further information,
contact your workshop.
Before fastening a child seat adjust
the head restraint to use position 3 35.
Page 101 of 341
Instruments and controls99
Push lever. Washer fluid is sprayed
onto the rear window and the wiper
wipes a few times.
Do not use if the rear window is
frozen.
Switch off in car washes.
The rear window wiper comes on
automatically when the windscreen
wiper is switched on and reverse gear
is engaged.
Activation or deactivation of this
function can be changed in the
Settings menu in the Info-Display.
Vehicle personalisation 3 123.
Outside temperature
A drop in temperature is indicated
immediately and a rise in temperature
after a time delay.
If outside temperature drops to 3 °C,
a warning message is displayed in the Driver Information Centre.9 Warning
The road surface may already be
icy even though the display
indicates a few degrees above 0
°C.
Clock
Date and time are shown in the
Info-Display.
R 4.0 IntelliLink Press ; and then select Settings.
Select Time and Date to display the
respective submenu.
Page 109 of 341

Instruments and controls107
The remaining oil life duration menu
is displayed in the Driver Information
Centre 3 116.
Select Vehicle Information
Menu ? by pressing MENU on the
turn signal lever. Turn the adjuster wheel to select Remaining Oil Life .
Remaining oil life duration is indicated
in percentage.
ResetPress SET/CLR on turn signal lever
for several seconds to reset. The
ignition must be switched on but
engine not running.
The system must be reset every time
the engine oil is changed to ensure
proper functionality. Seek the
assistance of a workshop.
Next service When the system has calculated that
engine oil life has been diminished,
Change Engine Oil Soon appears in
the Driver Information Centre. Have
engine oil and filter changed by a
workshop within one week or
300 miles (whichever occurs first).
Service information 3 303.Control indicators
The control indicators described are
not present in all vehicles. The
description applies to all instrument
versions. Depending on the
equipment, the position of the control indicators may vary. When the
ignition is switched on, most control indicators will illuminate briefly as afunctionality test.
The control indicator colours mean:red:danger, important reminderyellow:warning, information, faultgreen:confirmation of activationblue:confirmation of activationwhite:confirmation of activation
Page 124 of 341

122Instruments and controlsVehicle messagesMessages are indicated mainly in the
Driver Information Centre, in some
cases together with a warning and
signal chime.
Vehicle and service messages in
the Driver Information Centre
The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
Press SET/CLR , MENU or turn the
adjuster wheel to confirm a message.
Messages in the Info-Display
Some important messages appear
additionally in the Info-Display. Some messages only pop-up for a few
seconds.
Warning chimes When starting the engine or whilst
driving
Only one warning chime will sound at a time.
The warning chime regarding
unfastened seat belts has priority
over any other warning chime.
● If seat belt is not fastened.
● If a door or the tailgate is not fully
closed when starting-off.
● If a certain speed is exceeded with parking brake applied.
● If adaptive cruise control deactivates automatically.
● If approaching a vehicle ahead too closely.
● If a programmed speed or speed
limit is exceeded.● If a warning message appears in the Driver Information Centre.
● If the parking assist detects an object.
● If an unintended lane change occurs.
● If reverse gear is engaged and the rear carrier system is
extended.
● If the diesel particle filter has reached the maximum filling
level.
When the vehicle is parked and/or the driver's door is opened
● With exterior lights on.
During an Autostop ● If the driver's door is opened.
● If any condition for an autostart is
not fulfilled.
Battery voltage
When the vehicle battery voltage is
running low, a warning message will
appear in the Driver Information
Centre.
Page 125 of 341

Instruments and controls1231. Switch off immediately anyelectrical consumers which are
not required for a safe ride, e.g.
seat heating, heated rear window or other main consumers.
2. Charge the vehicle battery by driving continuously for a while or
by using a charging device.
The warning message will disappear
after the engine has been started two
times consecutively without a voltage drop.
If the vehicle battery cannot be
recharged, have the cause of the fault
remedied by a workshop.Vehicle personalisation
The vehicle's behaviour can be
personalised by changing the settings
in the Info-Display.
Some of the personal settings for
different drivers can be memorised
individually for each vehicle key.
Memorised settings 3 21.
Depending on vehicle equipment and
country-specific regulations, some of
the functions described below may
not be available.
Some functions are only displayed or
active when the engine is running.
Personal settings 7" IntelliLink Display
Press ;, select Settings and then
Vehicle on the touch-screen.
In the corresponding submenus the
following settings can be changed:
Vehicle ● Climate & Air Quality
Auto Fan Max Speed : Modifies
the fan regulation. Changed setting will be active after
switching the ignition off and on
again.
Air Conditioning Mode : Activates
or deactivates cooling when
switching on the ignition or uses the last chosen setting.
Auto Defog : Activates or
deactivates auto defog.