
LATCH-type (ISOFIX) child seat
anchors................................................ 63
License plate lamp (display mes-
sage) .................................................. .292
Light function, active
Display message ............................ 293
Light sensor (display message) ....... 293
Lights
Adaptive Highbeam Assist PLUS .... 133
Automatic headlamp mode ............ 130
Cornering light function ................. 132
Fogged up headlamps .................... 134
General notes ................................ 130
Hazard warning lamps ................... 132
High beam flasher .......................... 132
High-beam headlamps ................... 132
Light switch ................................... 130
Low-beam headlamps .................... 131
Parking lamps ................................ 131
Setting exterior lighting ................. 130
Standing lamps .............................. 131
Switching the daytime running
lamps on/off (on-board com-
puter) ............................................. 274
Switching the spotlight on/off ....... 274
Turn signals ................................... 131
see Interior lighting
see Replacing bulbs
Loading guidelines ............................ 325
Locking
see Central locking
Locking (doors)
Automatic ........................................ 87
Emergency locking ........................... 88
From inside (central locking but-
ton) ..................................................8 6
Locking centrally
see Central locking
Low-beam headlamps
Display message ............................ 291
Switching on/off .......................... .131
Lumbar support
Adjusting the 4-way lumbar sup-
port ................................................ 118
Luxury head restraints .....................115M
M+S tires
............................................ 386
Magic Body Control ........................... 210
MAGIC SKY CONTROL ....................... 100
Malfunction message
see Display messages
Matte finish (cleaning instruc-
tions) ..................................................3 61
Maximum charge current
Setting (charging cable) ................. 184
Setting (on-board computer) .......... 272
MBC
see Magic Body Control
mbrace
Call priority ....................................3 44
Display message ............................ 283
Downloading destinations
(COMAND) ..................................... 344
Downloading routes ....................... 347
Emergency call .............................. 341
General notes ................................ 340
Geo fencing ................................... 347
Locating a stolen vehicle ...............3 46
MB info call button ........................ 343
Remote fault diagnosis .................. 346
Remote vehicle locking .................. 345
Roadside Assistance button .......... 342
Search & Send ............................... 344
Self-test ......................................... 341
Speed alert ....................................3 47
System .......................................... 341
Triggering the vehicle alarm ........... 347
Vehicle remote unlocking .............. 345
Mechanical key
Function/notes ................................ 81
General notes .................................. 81
Inserting .......................................... 82
Locking vehicle ................................ 88
Removing ......................................... 81
Unlocking the driver's door .............. 87
Media Interface
USB port in the armrest of the
center console ............................... 327
see Separate operating instructions
Memory card (audio) ......................... 266
Memory function
In the rear compartment ................ 127
12Index 

Refuelingprocess (PLUG-IN
HYBRID vehicles) .......................... .178
see Fuel
Remote control
Garage door opener ....................... 347
Programming (garage door
opener) .......................................... 348
Replacing bulbs
General notes ................................ 135
Reporting safety defects .................... 29
Rescue card ......................................... 29
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 296
Warning lamp ................................. 320
Residual heat (climate control) ........ 152
Restraint system
Display message ............................ 287
Introduction ..................................... 44
Warning lamp ................................. 319
Warning lamp (function) ................... 45
Reversing feature
Panorama sliding sunroof ................ 98
Roller sunblinds ............................... 99
Side windows ................................... 94
Trunk lid ........................................... 89
Reversing lamps (display mes-
sage) ................................................... 292
ROAD SURFACE SCAN ....................... 211
Roadside Assistance (breakdown) .... 26
Roller sunblind
Panorama roof with power tilt/
sliding panel ..................................... 99
Rear side windows ......................... 333
Rear window .................................. 334
Roller sunblind of the panorama
roof with power tilt/sliding panel
Operating (front roller sunblind) .... 100
Operating (rear roller sunblind) ...... 100
Roof carrier ........................................ 330
Roof lining and carpets (cleaning
guidelines) ......................................... 366
Roof load (maximum) ........................ 433S
Safety
Children in the vehicle ..................... 61
Hybrid drive system ......................... 42
see Occupant safety
see Operating safety
Safety notes
Hybrid vehicles ................................ 42
Safety system
see Driving safety systems
SD memory card
Selecting ........................................ 266
Seat
Adjusting the front-passenger
seat from the driver's seat ............. 108
Multicontour seat in the rear com-
partment ........................................ 117
Seat belt buckle extender
Display message ............................ 285
Seat belt extender
Function/notes ................................ 49
Seat belts
Adjusting the driver's and front-
passenger seat belt ......................... 50
Adjusting the height ......................... 49
Cleaning ......................................... 366
Correct usage .................................. 48
Fastening ......................................... 49
Important safety guidelines ............. 47
Introduction ..................................... 46
Releasing ......................................... 50
Seat belt extender ........................... 49
Warning lamp ................................. 313
Warning lamp (function) ................... 50
Seating
Seating comfort package ............... 117
Seating comfort package ................. 117
Seats
Active multicontour seat ................ 117
Adjusting (electrically) ................... 106
Adjusting (rear compartment) ........ 107
Adjusting the 4-way lumbar sup-
port ................................................ 118
Adjusting the head restraint .......... 114
Calling up a stored setting (mem-
ory function) .................................. 127
Chauffeur mode ............................. 111
Index17 

Useful information
i
This Operator's Manual describes all models
and all standard and optional equipment of
your vehicle available at the time of publica-
tion of the Operator's Manual. Country-spe-
cific differences are possible. Please note
that your vehicle may not be equipped with all
features described. This also applies to
safety-related systems and functions.
iRead the information on qualified specialist
workshops (Ypage 28).
SmartKey
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If you attach heavy or large objects to the
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident.
Do not attach any heavy or large objects to theSmartKey. Remove any bulky key rings before
inserting the SmartKey into the ignition lock.
!Keep the SmartKey away from strong mag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. a mobile phone
or another SmartKey.
Rwith metallic objects, e.g. coins or metal foil.
Rinside metallic objects, e.g. a metal case.
This can affect the functionality of the Smart-
Key.
Do not keep the SmartKey in the temperature-
controlled cup holder (
Ypage 332). On vehicles
with the KEYLESS-GO start function, do not
keep it on the parcel shelf or in the trunk. Oth-
erwise, the SmartKey may not be detected, e.g. when starting the engine using the Start/Stop
button.
A check which periodically establishes a radio
connection between the vehicle and the Smart-
Key determines whether a valid SmartKey is in
the vehicle. This occurs, for example:
Rwhen starting the engine
Rwhilst driving
Rwhen using HANDS-FREE ACCESS
Rwhen the external door handles are touched
Rduring convenience closing
SmartKey functions
:& To lock the vehicle
;FTo open/close the trunk lid
=%To unlock the vehicle
SmartKey79
Opening and closing
Z 

Problems with the SmartKey
ProblemPossible causes/consequences andMSolutions
You can no longer lock or
unlock the vehicle using
the SmartKey.The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 82) and replace it if necessary
(Ypage 82).
If this does not work:
XUnlock (Ypage 87) or lock (Ypage 88) the vehicle using the
mechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 87) or lock (Ypage 88) the vehicle using the
mechanical key.
The SmartKey is faulty.
XUnlock (Ypage 87) or lock (Ypage 88) the vehicle using the
mechanical key.
XHave the SmartKey checked at a qualified specialist workshop.
You can no longer lock or
unlock the vehicle using
KEYLESS-GO.KEYLESS-GO was deactivated.
XReactivate KEYLESS-GO (Ypage 80).
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 82) and replace it if necessary
(Ypage 82).
If this does not work:
XUnlock (Ypage 87) or lock (Ypage 88) the vehicle using the
mechanical key.
There is interference from a powerful source of radio waves.
XUnlock (Ypage 87) or lock (Ypage 88) the vehicle using the
mechanical key.
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of the
SmartKey.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
XLock (Ypage 87) or unlock (Ypage 88) the vehicle using the
mechanical key.
XHave the vehicle and SmartKey checked at a qualified specialist
workshop.
84SmartKey
Opening and closing 

over or be flung around and thereby hit vehicleoccupants. There is a risk of injury, particu-
larly in the event of sudden braking or a sud-
den change in direction.
Always store objects so that they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
!The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
(
Ypage 433).
Do not leave the SmartKey in the trunk. You
could otherwise lock yourself out.
You should preferably place luggage or loads in
the trunk. Observe the loading guidelines
(
Ypage 325).
Obstruction detection with reversing
feature for the trunk lid
Vehicles with trunk lid remote closing fea-
ture: the trunk lid is equipped with automatic
obstacle recognition with reversing feature. If a
solid object blocks or restricts the trunk lid
when automatically opening or closing, this pro-
cedure is stopped. If the trunk lid is stopped
during the closing procedure, it will open again
automatically. The automatic obstacle recogni-
tion with reversing feature is only an aid. It is not a substitute for your attentiveness when open-
ing and closing the trunk lid.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rover the last 1/3 in (8 mm) of the closing
movement
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
Rpress the Fbutton on the SmartKey, or
Rpull or press the remote operating switch
on the driver's door or
Rpress the closing or locking button on the
trunk lid, or
Rpull on the trunk lid handle
Vehicles with HANDS-FREE ACCESS: it is also
possible to stop the closing process by perform-
ing a kicking movement under the rear bumper.
Opening and closing manually
Opening
XPress the Fbutton on the SmartKey.
or
XPull handle :.
The trunk lid opens.
Closing
XPull the trunk lid down using recess :.
Trunk89
Opening and closing
Z 

Vehicles with trunk lid remote closing fea-
ture or power closing:
XLightly push the trunk lid closed.
The power closing function pulls the trunk lid
closed.
XLock the vehicle if necessary with the&
button on the SmartKey or with KEYLESS-GO
(
Ypage 80).
iIf KEYLESS-GO detects a SmartKey in the
trunk, the trunk lid cannot be locked. It then
opens again.
Opening/closing automatically from
outside
Important safety notes
GWARNING
Parts of the body could become trapped dur-
ing automatic closing of the trunk lid. More-
over, people, e.g. children, may be standing in the closing area or may enter the closing area
during the closing process. There is a risk of
injury.
Make sure that nobody is in the vicinity of the
closing area during the closing process.
Use one of the following options to stop the
closing process:
Rpress the Fbutton on the SmartKey.
Rpull or press the remote operating switch
on the driver's door.
Rpress the closing or locking button on the
trunk lid.
Rpull the trunk lid handle
Vehicles with HANDS-FREE ACCESS: it is also
possible to stop the closing process by perform-
ing a kicking movement under the rear bumper.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
!The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
(
Ypage 433).
Opening
You can open the trunk lid automatically using
the SmartKey or the handle in the trunk lid.
XPress and hold the Fbutton on the Smart-
Key until the trunk lid opens.
or
XIf the trunk lid is unlocked, pull the trunk lid
handle and let it go again immediately.
Closing
You can close the trunk lid automatically using
the SmartKey or the closing button in the trunk
lid.
XPress closing button :on the trunk lid.
or
XIf the SmartKey is located in the immediate
vicinity of the vehicle: press the Fbutton
on the SmartKey.
You can release the button as soon as the
trunk lid starts to close.
XTo stop the closing process:
RPress the Fbutton on the SmartKey or
RPull the trunk lid handle, or
RPress closing button :or locking but-
ton ;on the trunk lid, or
90Trunk
Opening and closing 

RPress the remote operating switch on the
driver's door, or
RIn vehicles with HANDS-FREE ACCESS:
kick into the sensor detection range under
the bumper with your foot.
iIf theF button on the SmartKey is
pressed or HANDS-FREE ACCESS is initiated
after the closing process is stopped, the trunk
lid opens.
Vehicles with trunk lid remote closing fea-
ture and KEYLESS-GO: when all the doors are
closed, you can simultaneously close the trunk
lid and lock the vehicle. The SmartKey must be
located to the rear of the vehicle.
XPress and release locking button ;on the
trunk lid.
If a KEYLESS-GO key is detected outside the
vehicle, the trunk lid closes and the vehicle
locks.
If KEYLESS-GO detects a second SmartKey out- side the vehicle, the trunk lid remains closed.
If KEYLESS-GO detects a SmartKey in the trunk,
the trunk lid opens again after it is closed.
HANDS-FREE ACCESS
Important safety notes
GWARNING
The vehicle's exhaust system may be very hot. You could burn yourself by touching the
exhaust system if you use HANDS-FREE
ACCESS. There is a risk of injury. Always
ensure that you only make the kicking move-
ment within the detection range of sensors.
!If the SmartKey is within the rear detection
range of KEYLESS-GO, the following situa-
tions, for example, could lead to the uninten-
tional opening of the trunk:
Rusing a car wash
Rusing a power washer
Make sure that the SmartKey is at least 10 ft
(3 m) away from the vehicle.
General notes
With KEYLESS-GO and HANDS-FREE ACCESS,
you can open or close the trunk lid or stop the
procedure without using your hands. This is use- ful if you have your hands full. To do this, make
a kicking movement under the bumper with your
foot.
Observe the following points:
RCarry your KEYLESS-GO key about your per-
son. The KEYLESS-GO key must be in the rear
detection range of the vehicle.
RWhen making the kicking movement, make
sure that you are standing firmly on the
ground and that there is sufficient clearance
to the rear of the vehicle. You could otherwise
lose your balance e.g. on ice.
RAlways ensure that you only make the kicking
movement within the detection range of sen-
sors
:.
RStand at least 12 in (30 cm) away from the
rear area while doing so.
RDo not come into contact with the bumper
while making the kicking movement. Other-
wise, the sensors may not function correctly.
RHANDS-FREE ACCESS does not function
when the engine is started.
RDirt caused by road salt around sensors :
may restrict functionality.
RUsing the HANDS-FREE ACCESS with a pros-
thetic leg may restrict functionality.
RIf a KEYLESS-GO key is within the rear detec-
tion range of KEYLESS-GO, HAND-FREE
ACCESS could be triggered. The trunk lid
could thus be opened or closed unintention-
ally, for example, if you:
-sit on the edge of the trunk.
-set something down or lift something up
behind the vehicle.
-move the charging cable through the detec-
tion range of the sensors.
-polish the rear of the vehicle.
Do not carry the KEYLESS-GO key about your
person in these situations or in situations sim-
Trunk91
Opening and closing
Z 

ilar to these. This will prevent the uninten-
tional opening/closing of the trunk.
Operation
XTo open/close:kick into sensor detection
range :under the bumper with your foot.
A warning tone will sound while the trunk lid is
opening or closing.
XIf the trunk lid does not open/close after
several attempts: wait at least ten seconds
and then using your foot kick under the
bumper again.
If you hold your foot under the bumper for too
long, the trunk lid does not open or close.
Repeat the leg movement more quickly if this
occurs.
To stop the opening or closing procedure:
Rkick with your leg in the sensor detection
range :under the bumper or
Rpull the handle on the outside of the trunk lid
or
Rpress the closing button on the trunk lid, or
Rpress the Fbutton on the SmartKey
If the trunk lid closing procedure has been stop-
ped:
Rmove your foot under the bumper again and
the trunk lid will open
If the trunk lid opening procedure has been
stopped:
Rmove your foot under the bumper again and
the trunk lid will close
Opening/closing automatically from
inside
Important safety notes
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rover the last 1/3 in (8 mm) of the closing
movement
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped:
Rpress the Fbutton on the SmartKey, or
Rpull or press the remote operating switch
on the driver's door or
Rpress the closing or locking button on the
trunk lid, or
Rpull on the trunk lid handle
Vehicles with HANDS-FREE ACCESS: it is also
possible to stop the closing process by perform-
ing a kicking movement under the rear bumper.
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion. There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
!The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
(
Ypage 433).
92Trunk
Opening and closing