
24Keys, doors and windowsNotice
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 locked
automatically if no door has been
opened.
Remote control operation
Unlocking
Press O.
Unlocking mode can be set in the
vehicle personalisation menu in the
Info Display. Two settings are
selectable:
● All doors, load compartment and fuel filler flap will be unlocked by
pressing O once.
● Only the driver's door and fuel filler flap will be unlocked by
pressing O once. To unlock all
doors, load compartment and
fuel filler flap, press O twice.
Select the relevant setting in the
Vehicle personalisation.
Vehicle personalisation 3 100.
Unlocking the tailgate
Press P longer to unlock the
tailgate only.
Vehicle personalisation 3 100.
Unlocking and opening the tailgate 3 29.
Locking
Close doors, load compartment and
fuel filler flap.
Press N.
If a door is not closed properly, the
central locking system will not work.
Confirmation
Operation of the central locking
system is confirmed by the hazard
warning flashers.

Seats, restraints41Seats, restraintsHead restraints............................ 41
Front seats ................................... 42
Seat position .............................. 42
Seat adjustment ........................43
Armrest ...................................... 45
Heating ...................................... 45
Rear seats ................................... 46
Armrest ...................................... 46
Seat belts ..................................... 47
Three-point seat belt .................48
Airbag system .............................. 50
Front airbag system ...................53
Side airbag system ....................53
Curtain airbag system ...............54
Airbag deactivation ....................55
Child restraints ............................. 56
Child restraint systems ..............56
Child restraint installation locations ................................... 59Head restraints
Position9 Warning
Only drive with the head restraint
set to the proper position.
The upper edge of the head restraint
should be at upper head level. If this
is not possible for extremely tall
people, set to highest position, and
set to lowest position for small people.
Head restraints on front seats
Height adjustment
Press release button, adjust height,
engage.

Seats, restraints55Airbag deactivation
The front passenger airbag system
must be deactivated for child restraint
system on the passenger seat
according to the instructions in the
table 3 59. The side airbag and
curtain airbag systems, the belt
pretensioners and all driver airbag
systems will remain active.
The front passenger airbag system
can be deactivated via a key-
operated switch on the passenger side of the instrument panel.
Use the ignition key to choose theposition:* OFF:front passenger airbag is
deactivated and will not
inflate in the event of a
collision. Control indicator
* OFF illuminates
continuously in the centre
consoleÓ ON:front passenger airbag is
active9 Danger
Deactivate passenger airbag only
in combination with the use of a
child restraint system, subject to
the instructions and restrictions in
the table 3 59.
Otherwise, there is a risk of fatal
injury for a person occupying a
seat with a deactivated front
passenger airbag.
If the control indicator ÓON
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 the control indicator *OFF
illuminates after the ignition is
switched on, the front passenger
airbag system is deactivated. It stays
on while the airbag is deactivated.
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.

Instruments and controls71Instruments and
controlsControls ....................................... 72
Steering wheel adjustment ........72
Steering wheel controls .............72
Heated steering wheel ...............72
Horn ........................................... 73
Windscreen wiper and washer ..73
Rear window wiper and washer ...................................... 75
Outside temperature ..................75
Clock ......................................... 76
Power outlets ............................. 76
Inductive charging .....................77
Cigarette lighter ......................... 78
Ashtrays .................................... 78
Warning lights, gauges and indi‐ cators ........................................... 79
Instrument cluster ......................79
Speedometer ............................. 83
Odometer .................................. 83
Trip odometer ............................ 83
Tachometer ............................... 83
Fuel gauge ................................ 84
Fuel selector .............................. 84Engine coolant temperature
gauge ....................................... 85
Engine oil level monitor .............86
Service display .......................... 86
Control indicators ......................87
Turn lights .................................. 87
Seat belt reminder .....................87
Airbag and belt tensioners .........88
Airbag deactivation ....................88
Charging system .......................88
Malfunction indicator light ..........89
Service vehicle soon .................89
Stop engine ............................... 89
System check ............................ 89
Brake and clutch system ...........89
Antilock brake system (ABS) .....90
Gear shifting .............................. 90
Lane departure warning ............90
Electronic Stability Control and Traction Control system ...........90
Electronic Stability Control and Traction Control system off ......90
Engine coolant temperature ......91
Preheating ................................. 91
Diesel particle filter ....................91
AdBlue ....................................... 91
Deflation detection system ........91
Engine oil pressure ....................91
Low fuel ..................................... 92
Autostop .................................... 92Exterior light.............................. 92
High beam ................................. 92
High beam assist .......................92
Low beam .................................. 92
Fog light ..................................... 92
Rear fog light ............................. 92
Rain sensor ............................... 92
Cruise control ............................ 93
Side blind spot alert ...................93
Active emergency braking .........93
Speed limiter ............................. 93
Door open .................................. 93
Displays ....................................... 93
Driver Information Centre ..........93
Info Display ................................ 96
Head-up display ........................97
Vehicle messages ........................99
Warning chimes .........................99
Battery voltage ........................ 100
Vehicle personalisation ..............100
Telematics service .....................104
OnStar ..................................... 104

Instruments and controls87Overdued service is indicated by a
message in the Driver Information
Centre which indicates the overdued
distance. F flashes and then lights up
permanently until service is executed.
Reset of service interval
After each service, the service
indicator must be reset to ensure
proper functionality. It is
recommended to seek the assistance of a workshop.
If service is executed by yourself,
operate as following:
● switch off ignition
● press and hold button M or
CHECK
● switch on ignition; the distance indication begins a countdown
● when the display indicates =0,
release the button. Symbol F
disappearsRetrieving service information
To retrieve the status of the service
information at any time press button
M or CHECK . The service
information is displayed for a few
seconds.
Service information 3 225.
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 a
functionality test.
The control indicator colours mean:red:danger, important reminderyellow:warning, information, faultgreen:confirmation of activationblue:confirmation of activationwhite:confirmation of activation
See all control indicators on different
instrument clusters 3 79.
Turn lights
O illuminates or flashes green.
Illuminates briefly The parking lights are switched on.
Flashes
A turn light or the hazard warning
flashers are activated.
Rapid flashing: failure of a turn light or associated fuse, failure of turn light on
trailer.
Bulb replacement 3 192, Fuses
3 200.
Turn lights 3 112.
Seat belt reminder
Seat belt reminder on all seats
X illuminates or flashes red in the
instrument cluster together with the
indication in the roof console for each
seat belt.

Instruments and controls99If the head-up image is not correct for
other reasons, contact a workshop.Vehicle messages
Messages are indicated in the Driver
Information Centre, in some cases
together with a warning and signal
chime.
Press SET/CLR to confirm a
message.
Vehicle and service messages The vehicle messages are displayed
as text. Follow the instructions given
in the messages.
Messages in the
Colour Info Display
Some important messages may
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 not
fastened seat belts has priority over
any other warning chime.
● If a 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 cruise control deactivates automatically.
● If a programmed speed or speed
limit is exceeded.

128Climate controlareas with high dust levels or which
are sensitive to environmental
allergens.
Passenger compartment air filter
replacement may also be needed if
there is reduced air flow, windows
fogging up, or odors.
Your dealer can help to determine
when it is the right time to replace the
filter.
Air conditioning regularoperation
In order to ensure continuously
efficient performance, cooling must
be operated for a few minutes once a month, irrespective of the weather
and time of year. Operation with
cooling is not possible when the
outside temperature is too low.
Service For optimal cooling performance, it is
recommended to annually check the
climate control system, starting
three years after initial vehicle
registration, including:● functionality and pressure test
● heating functionality
● leakage check
● check of drive belts
● cleaning of condenser and evaporator drainage
● performance check
● cabin air filter check

136Driving and operatingIndication
An Autostop is indicated by control
indicator D.
During an Autostop, the heating and
brake performance will be
maintained.
Conditions for an Autostop
The stop-start system checks if each
of the following conditions is fulfilled.
● The stop-start system is not manually deactivated.
● The driver's door is closed or the driver's seat belt is fastened.
● The vehicle battery is sufficiently charged and in good condition.
● The engine is warmed up.
● The engine coolant temperature is not too high.
● The engine exhaust temperatureis not too high, e.g. after driving
with high engine load.
● The ambient temperature is not too low.
● The climate control system allows an Autostop.
● The brake vacuum is sufficient.
● The self-cleaning function of the diesel particle filter is not active.
Otherwise an Autostop will be
inhibited.
Notice
The Autostop may be inhibited for
several hours after a battery
replacement or reconnection.
Certain settings of the climate control
system may inhibit an Autostop. See
Climate control chapter for more
details 3 118.
If an autostop is temporarily not
available, D flashes green 3 92.
Immediately after driving at a higher
speed an Autostop may be inhibited.
New vehicle running-in 3 130.Vehicle battery discharge protection
To ensure reliable engine restarts, several vehicle battery discharge
protection features are implemented
as part of the stop-start system.
Power saving measures
During an Autostop, several electrical
features such as auxiliary electric
heater or rear window heating are
disabled or switched to a power
saving mode. The fan speed of the
climate control system is reduced to save power.
Restart of the engine by the driver
Vehicles with manual transmissionConventional restart
All engines have conventional restart.
Depress the clutch pedal without
depressing the brake pedal to restart the engine.
On engines with late restart a
conventional restart is only possible
without depressed brake pedal.