Page 10 of 327
8In briefHead restraint adjustment
Press release button, adjust height,
engage.
Head restraints 3 44.
Seat belt
Pull out the seat belt and fasten in belt
buckle. The seat belt must not be
twisted and must fit close against the
body. The backrest must not be tilted back too far (maximum approx. 25°).
To unfasten belt, press red button on belt buckle.
Seat position 3 46, Seat belts
3 55, Airbag system 3 57.
Mirror adjustment
Interior mirror
To adjust the mirror, move the mirror
housing in the desired direction.
Manual anti-dazzle interior mirror
3 38, Automatic anti-dazzle interior
mirror 3 38.
Page 19 of 327

In brief17Starting offCheck before starting off ● Tyre pressure and condition 3 263, 3 303.
● Engine oil level and fluid levels 3 241.
● All windows, mirrors, exterior lighting and number plates are
free from dirt, snow and ice and
are operational.
● Proper position of mirrors, seats, and seat belts 3 36, 3 46,
3 56.
● Brake function at low speed, particularly if the brakes are wet.Starting the engine
● Manual transmission: operateclutch and brake pedal.
● Automatic transmission: operate brake pedal and move selector
lever to P or N.
● Do not operate accelerator pedal.
● Press Engine Start/Stop button.
● Release button after starting procedure begins.
Starting the engine 3 164.
Stop-start system
If the vehicle is at a low speed or at a
standstill and certain conditions are
fulfilled, an Autostop is activated.
An Autostop is indicated by the
needle at the AUTOSTOP position in
the tachometer.
A restart is indicated by the needle at
the idle speed position in the
tachometer.
Stop-start system 3 166.
Page 26 of 327

24Keys, doors and windowsManual unlocking 3 24.
Memorised settings
Whenever the ignition is switched off,
the following settings are
automatically memorised by the
electronic key:
● automatic climate control
● 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
electronic key 3 21.
A precondition is that Personalisation
by Driver is activated in the personal
settings of the Info-Display. This must
be set for each electronic key which is
used. The status change is available
only after locking and unlocking the
vehicle.
The assigned memory position of the power seat is automatically recalled
when switching on ignition and AutoMemory Recall is activated in the
Info-Display for the memorised
electronic key.
Power seat 3 49.
Vehicle personalisation 3 126.
Central locking system
Unlocks and locks doors, load
compartment and fuel filler flap.
A 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
electronic key, the doors are being
locked automatically if no door has
been opened. A precondition is that
the setting is activated in the vehicle
personalisation 3 126.Central locking buttons
Locks or unlocks all doors, the load
compartment and fuel filler flap from
the passenger compartment via a
switch in the driver's door panel.
Press e to lock. LED in button
illuminates.
Press c to unlock.
Operation with the key in case of
a central locking system fault
In case of a fault, e.g. vehicle battery
or electronic key battery is
discharged, the driver's door can be
locked or unlocked with the key blade.
Page 46 of 327

44Seats, restraintsSeats, restraintsHead restraints............................ 44
Front seats ................................... 46
Seat position .............................. 46
Manual seat adjustment ............47
Power seat adjustment ..............49
Armrest ...................................... 52
Heating ...................................... 53
Ventilating .................................. 53
Massage .................................... 54
Rear seats ................................... 54
Armrest ...................................... 54
Heating ...................................... 54
Seat belts ..................................... 55
Three-point seat belt .................56
Airbag system .............................. 57
Front airbag system ...................60
Side airbag system ....................61
Curtain airbag system ...............61
Airbag deactivation ....................62
Child restraints ............................. 63
Child restraint systems ..............63
Child restraint installation locations ................................... 66Pedestrian protection system ......70
Active bonnet ............................. 70Head 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.
Page 57 of 327

Seats, restraints55Seat belts
The seat belts are locked during
heavy acceleration or deceleration of
the vehicle, holding the occupants in
the seat position. Thereby the risk of
injury is considerably reduced.
9 Warning
Fasten seat belt before each trip.
In the event of an accident, people
not wearing seat belts endanger their fellow occupants and
themselves.
Seat belts are designed to be used by only one person at a time. Child
restraint system 3 63.
Periodically check all parts of the belt
system for damage, soiling and
proper functionality.
Have damaged components replaced by a workshop. After an accident,
have the belts and triggered belt
pretensioners replaced by a
workshop.
Notice
Make sure that the belts are not
damaged by shoes or sharp-edged objects or are trapped. Prevent dirt
from getting into the belt retractors.
Seat belt reminder
Each seat is equipped with a seat belt reminder, indicated for front seats by
control indicators X and k, or for rear
seats by the symbol X in the Driver
Information Centre 3 106.
Belt force limiters
Stress on the body is reduced by the
gradual release of the belt during a
collision.Belt pretensioners
In the event of a head-on, rear-end or
side-on collision of a certain severity,
the front and rear seat belts are
tightened. The front seat belts and the outer rear seat belts are tightened by
one pretensioner per seat.9 Warning
Incorrect handling (e.g. removal or
fitting of belts) can trigger the belt
pretensioners.
Deployment of the belt pretensioners
is indicated by continuous illumination
of control indicator v 3 107.
Triggered belt pretensioners must be replaced by a workshop. Belt
pretensioners can only be triggered
once.
Notice
Do not affix or install accessories or
other objects that may interfere with
the operation of the belt
pretensioners. Do not make any
modifications to belt pretensioner components as this will invalidate
the operating permit of your vehicle.
Page 58 of 327
56Seats, restraintsThree-point seat beltFasten
Withdraw the belt from the retractor,
guide it untwisted across the body
and insert the latch plate into the
buckle. Tighten the lap belt regularly
whilst driving by pulling the shoulder
belt.
Loose or bulky clothing prevents the
belt from fitting snugly. Do not place
objects such as handbags or mobile
phones between the belt and your body.
9 Warning
The belt must not rest against hard
or fragile objects in the pockets of
your clothing.
Seat belt reminder X, k 3 106.
Unfasten
To release belt, press red button on
belt buckle.
Page 59 of 327

Seats, restraints57Using the seat belt while pregnant9Warning
The lap belt must be positioned as
low as possible across the pelvis
to prevent pressure on the
abdomen.
Airbag system
The airbag system consists of a
number of individual systems
depending on the scope of
equipment.
When triggered, the airbags inflate
within milliseconds. They also deflate
so quickly that it is often unnoticeable
during the collision.9 Warning
The airbag system deploys in an
explosive manner, repairs must be performed by skilled personnel
only.
9 Warning
Adding accessories that change
the vehicle's frame, bumper
system, height, front end or side
sheet metal, may keep the airbag
system from working properly. The operation of the airbag system can
also be affected by changing any
parts of the front seats, seat belts,
airbag sensing and diagnostic
module, steering wheel,
instrument panel, inner door seals including the speakers, any of the
airbag modules, ceiling or pillar
trim, front sensors, side impact
sensors or airbag wiring.
Notice
The airbag systems and belt
pretensioner control electronics are
located in the centre console area.
Do not put any magnetic objects in
this area.
Do not affix any objects onto the
airbag covers and do not cover them with other materials. Have damagedcovers replaced by a workshop.
Each airbag is triggered only once.
Have deployed airbags replaced by
a workshop. Furthermore, it may be
necessary to have the steering
wheel, the instrument panel, parts of
the panelling, the door seals,
handles and the seats replaced.
Page 63 of 327

Seats, restraints619Warning
Optimum protection is only
provided when the seat is in the
proper position.
Seat position 3 46.
Keep the area in which the airbag
inflates clear of obstructions.
Fit the seat belt correctly and
engage securely. Only then is the
airbag able to protect.
Side airbag system
The side airbag system consists of an
airbag in each front seat backrest and in the rear outboard seat backrests.
This can be identified by the word
AIRBAG .
The side airbag system is triggered in
the event of a side impact of a certain severity. The ignition must be
switched on.
The inflated airbags cushion the
impact, thereby reducing the risk of
injury to the upper body and pelvis in
the event of a side-on collision
considerably.
9 Warning
Keep the area in which the airbag
inflates clear of obstructions.
Notice
Only use protective seat covers that have been approved for the vehicle.Be careful not to cover the airbags.
Curtain airbag system
The curtain airbag system consists of an airbag in the roof frame on each
side. This can be identified by the
word AIRBAG on the roof pillars.
The curtain airbag system is triggered
in the event of a side-on impact of a
certain severity. The ignition must be
switched on.