
B
BAS (Brake Assist System) ................. 70
BAS PLUS (Brake Assist System
PLUS) with Cross-Traffic Assist
Function/note s................................ 71
Important safety notes .................... 71
Battery (key)
Checking .......................................... 88
Important safety notes .................... 87
Replacing ......................................... 88
Battery (vehicle)
Charging ........................................ 364
Display message ............................ 284
Important safety notes .................. 362
Jump starting ................................. 366
Belt
see Seat belts
Belt tensioner
Activation ......................................... 57
Blind Spot Assist
see Active Blind Spot Assist
Bonnet
Active bonnet (pedestrian protec-tion) ............................................... 338
Closing ........................................... 340
Display message ............................ 299
Important safety notes .................. 338
Opening ......................................... 339
Boot
Emergency release .......................... 98
Important safety notes .................... 94
Locking separately ........................... 98
Opening/closing (automatically
from inside) ...................................... 97
Opening/closing (automatically
from outside) ................................... 95
Opening/closing (from the out-
side, HANDS-FREE ACCESS) ............ 96
Power closing .................................. 92
Boot lid
Display message ............................ 299
Obstacle recognition ........................ 94
Opening dimensions ...................... 410
Opening/closing .............................. 94
Boot load (maximum) ........................ 410
Brake
EBD .................................................. 77 Brake Assist
see BAS (Brake Assist System)
Brake fluid
Display message ............................ 273
Notes ............................................. 408
Brake force distribution
see EBD (electronic brake force
distribution)
Brake lamps
Adaptive ........................................... 75
Display message ............................ 281
Brakes
ABS .................................................. 70
Adaptive Brake Assist ...................... 74
BAS .................................................. 70
BAS PLUS with Cross-Traffic
Assist ............................................... 71
Brake fluid (notes) ......................... 408
Display message ............................ 267
Driving tips .................................... 186
High-performance brake system .... 187
Hill start assist ............................... 164
HOLD function ............................... 205
Important safety notes .................. 186
Parking brake ................................ 183
Warning lamp ................................. 304
Breakdown
Where will I find...? ........................ 356
see Flat tyre
see Towing away
Brightness control (instrument
cluster lighting) ................................... 34
Buttons on the steering column ...... 245 C
Calling up a fault see Display messages
Camera
see 360° camera
see Reversing camera
Capacities (technical data) ............... 404
Car
see Vehicle
Car key
see Key
Car wash (care) ................................. 3456
Index 

Using ............................................. 387
Jump starting (engine) ......................366 K
Key Changing the battery ....................... 88
Checking the battery ....................... 88
Convenience closing feature .......... 101
Convenience opening feature ....... .100
Display message ............................ 301
Door central locking/unlocking ....... 85
Emergency key element ................... 87
Important safety notes .................... 84
KEYLESS-GO start function .............. 86
Loss ................................................. 89
Modifying the programming ............. 86
Overview .......................................... 84
Positions (ignition lock) ................. 161
Problem (malfunction) ..................... 89
Starting the engine ........................ 163
Key positions
Key ................................................ 161
Start/Stop button .......................... 161
KEYLESS-GO
Convenience closing ..................... .101
Deactivation ..................................... 85
General notes .................................. 85
Locking ............................................ 85
Start function ................................... 86
Unlocking ......................................... 85
Kickdown
Driving tips ................................... .173
Kneebag ............................................... 50 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
see Active Lane Keeping Assist
Licence plate lamp (display mes-
sage) ................................................... 281
Light sensor (display message) ....... 282
Lighting
see Lights Lights
Activating/deactivating the Intel-
ligent Light System ........................ 262
Active light function ....................... 129
Adaptive Highbeam Assist PLUS .... 130
Automatic headlamp mode ............ 127
Cornering light function ................. 129
Dipped-beam headlamps .............. .127
Driving abroad ............................... 126
Foglamps (extended range) ........... 130
General notes ................................ 126
Hazard warning lamps ................... 128
Headlamp flasher ........................... 128
Intelligent Light System (func-
tion) ............................................... 129
Light switch ................................... 126
Main-beam headlamps ................... 128
Misted up headlamps .................... 132
Motorway mode ............................ .130
Parking lamps ................................ 128
Rear foglamp ................................. 127
Setting exterior lighting ................. 126
Side lamps ..................................... 127
Switching the spotlight on/off ....... 263
Turn signals ................................... 128
see Interior lighting
see Replacing bulbs
LIM indicator lamp
Cruise control ................................ 189
DISTRONIC PLUS ........................... 196
Variable SPEEDTRONIC ................. 192
Limiting the speed
see SPEEDTRONIC
Loading guidelines ............................ 316
Locking
see Central locking
Locking (doors)
Automatic ........................................ 92
Emergency locking ........................... 93
From inside (central locking but-
ton) ................................................. .91
Locking centrally
see Central locking
Luggage net hooks ............................ 321
Lumbar support
Adjusting the 4-way lumbar sup-
port ................................................ 113 Index
13 

Rear-view mirror
Anti-dazzle mode (automatic) ........ 121
Dipping (manual) ........................... 119
Refuelling
Fuel gaug e....................................... 32
Important safety notes .................. 178
Notes for Mercedes‑ AMG vehi-
cles ................................................ 406
Refuelling process ......................... 179
see Fuel
Remote control
Auxiliary heating/ventilation .......... 151
Changing the batteries (auxiliary
heating) ......................................... 153
Garage door opener ....................... 330
Programming (garage door
opener) .......................................... 330
Replacing bulbs
General notes ................................ 133
Replacing the battery (auxiliary
heating remote control) .................... 153
Rescue card ......................................... 27
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 286
Warning lamp ................................. 310
Residual heat (climate control) ........ 147
Restraint system
Display message ............................ 276
Introduction ..................................... 42
Warning lamp ................................. 309
Warning lamp (function) ................... 43
Rev counter ........................................ 244
Reversing camera
Cleaning instructions ..................... 350
Displays in the COMAND display ... 221
Function/note s............................. 220
Reversing feature
Side windows ................................... 99
Reversing function
Boot lid ............................................ 94
Roller sunblind ............................... 103
Reversing lamp (display message) .. 282
ROAD SURFACE SCAN ....................... 209
Roller sunblind
Panorama roof ............................... 103 Rear window .................................. 324
Roller sunblind of the panorama
roof
Opening and closing ...................... 104
Operating ....................................... 103
Resetting ....................................... 104
Roof lining and carpets (cleaning
instructions) ...................................... 353
Roof load (maximum) ........................ 410 S
Safety Children in the vehicle ..................... 60
see Occupant safety
see Operating safety
Safety system
see Driving safety systems
SD memory card
Selecting ........................................ 254
Seat
Adjusting the front-passenger
seat from the driver's seat ............. 110
Seat backrest display message ..... 299
Seat belt
Correct usage .................................. 45
Seat belts
Adjusting the driver's and front-
passenger seat belt ......................... 47
Cleaning ......................................... 353
Display message ............................ 275
Fastening ......................................... 46
Important safety guidelines ............. 44
Introduction ..................................... 44
Rear seat belt status indicator ......... 48
Releasing ......................................... 47
Warning lamp ................................. 302
Warning lamp (function) ................... 48
Seating
Seating comfort packag e............... 113
Seating comfort package ................. 113
Seats
Active multicontour seat ................ 113
Adjusting (electrically) ................... 110
Adjusting the 4-way lumbar sup-
port ................................................ 113
Adjusting the head restraint .......... 111 Index
17 

depressed pedal. This jeopardises the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
Always fit the floormats securely and as pre-
scribed in order to ensure that there is always sufficient room for the pedals. Do not use
loose floormats and do not place several floor-mats on top of one another.
! If the engine is switched off and equip-
ment on the diagnostics connection is
used, the starter battery may discharge.
Connecting equipment to the diagnostics
connection can lead to emissions monitoring information being reset, for example. This
may lead to the vehicle failing to meet the
requirements of the next emissions test dur-
ing the main inspection. Qualified specialist workshop
A qualified specialist workshop has the nec-
essary special skills, tools and qualifications
to correctly carry out any necessary work on
your vehicle. This particularly applies to work
relevant to safety.
Observe the notes in the Service Booklet.
Always have the following work carried out at a qualified specialist workshop:
R work relevant to safety
R service and maintenance work
R repair work
R modifications, installations and conver-
sions
R work on electronic components
Mercedes-Benz recommends that you use a
Mercedes-Benz Service Centre. Vehicle registration
Mercedes-Benz may ask its Service Centres
to carry out technical inspections on certain vehicles. The quality or safety of the vehicle is
improved as a result of the inspection.
Mercedes-Benz can only inform you about
vehicle checks if it has your registration data.
It is possible that your vehicle has not yet
been registered in your name in the following
cases:
R if your vehicle was not purchased at an
authorised specialist dealer.
R if your vehicle has not yet been examined at
a Mercedes-Benz Service Centre.
It is advisable to register your vehicle with a
Mercedes-Benz Service Centre.
Inform Mercedes-Benz as soon as possible
about any change in address or vehicle own-
ership. You can do this at a Mercedes-Benz
Service Centre, for example. Correct use
If you remove any warning stickers, you or
others could fail to recognise certain dangers.
Leave warning stickers in position.
Observe the following information when driv- ing your vehicle:
R the safety notes in this manual
R the vehicle technical data
R traffic rules and regulations
R laws and safety standards pertaining to
motor vehicles Implied warranty
! Follow the instructions in this manual
about the proper operation of your vehicle
as well as about possible vehicle damage.
Damage to your vehicle that arises from
culpable contraventions against these
instructions are not covered either by
Mercedes-Benz implied warranty or by the
New or Used-Vehicle Warranty. 26
Introduction 

A check which periodically establishes a radio
connection between the vehicle and the key
determines whether a valid key is in the vehi- cle. This occurs, for example:
R when starting the engine
R whilst driving
R when using HANDS-FREE ACCESS
R when the external door handles are
touched
R during convenience closing X
To unlock the vehicle: touch the inner
surface of the door handle.
X To lock the vehicle: touch sensor sur-
face :or;.
Make sure that you do not touch the inner
surface of the door handle.
X Convenience closing feature: touch
recessed sensor surface ;for an exten-
ded period.
For further information on the convenience closing feature (Y page 101).
Deactivating If you do not intend to use a key for an exten-
ded period of time, you can deactivate the
KEYLESS-GO function of the key. The key will
then use very little power, thereby conserving battery power. For the purposes of activa-
tion/deactivation, the vehicle does not have
to be nearby. X
To deactivate: press the&button on
the key twice in rapid succession.
The battery check lamp of the key flashes
twice briefly and lights up once, then KEY-
LESS-GO is deactivated .
X To activate: press any button on the key or
insert the key into the ignition lock.
KEYLESS-GO and all of its associated fea-
tures are available again. KEYLESS-GO start function
Bear in mind that the engine can be started by any of the vehicle occupants if there is a key
in the vehicle. Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's door and the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel alone.
X To change the setting: press and hold
down the %and& buttons simulta-
neously for about six seconds until the bat- tery indicator lamp flashes twice
(Y page 88).
i If the setting of the locking system is
changed within the signal range of the vehi- cle, pressing the &or% button:
R locks or
R unlocks the vehicle
The key now functions as follows:
X To unlock the driver's door: press the
% button once.
X To unlock centrally: press the%but-
ton twice.
X To lock centrally: press the&button. 86
KeyOpening and closing 

The KEYLESS-GO function is changed as fol-
lows:
X To unlock the driver's door: touch the
inner surface of the door handle on the
driver's door.
X To unlock centrally: touch the inner sur-
face of the front-passenger door handle.
X To lock centrally: touch the outer sensor
surface on one of the door handles.
X To restore the factory settings: press
and hold down the %and& buttons
simultaneously for approximately six sec-
onds until the battery check lamp flashes
twice (Y page 88). Emergency key element
General notes If the vehicle can no longer unlocked with the
key or KEYLESS-GO, use the emergency key
element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system will be triggered. Switch
off the alarm (Y page 80).
If you unlock the vehicle using the emergency
key element, the fuel filler flap will not be
unlocked automatically.
X To unlock the fuel filler flap: insert the
key into the ignition lock.
Removing the emergency key element X
Push release catch :in the direction of
the arrow and, at the same time, remove
emergency key element ;from the key.
For further information about: R unlocking the driver's door (Y page 93)
R unlocking the boot (Y page 98)
R locking the vehicle (Y page 93)
Inserting the emergency key element X
Push emergency key element ;com-
pletely into the key until it engages and
release catch :is back in its basic posi-
tion. Battery of the key
Important safety notes G
WARNING
Batteries contain toxic and corrosive substan- ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention immediately. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in anenvironmentally responsible
recycling system. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies. Key
87Opening and closing Z 

Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist workshop.
Checking the battery X
Press the &or% button.
The battery is working properly if battery
check lamp :lights up briefly.
The battery is discharged if battery check
lamp :does not light up briefly.
X Replace the battery (Y page 88).
i If the key battery is checked within the
signal reception range of the vehicle, press- ing the &or% button:
R locks or
R unlocks the vehicle
i You can obtain a battery from any quali-
fied specialist workshop.
Replacing the battery You require a CR 2025 3 V cell battery.
X Take the emergency key element out of the
key (Y page 87). X
Press emergency key element ;into the
opening in the key in the direction of the
arrow until battery compartment cover :
opens. When doing so, do not hold battery
compartment cover :shut.
X Remove battery compartment cover :. X
Repeatedly tap the key against your palm
until battery =falls out.
X Insert the new battery with the positive ter-
minal facing upwards. Use a lint-free cloth
to do so.
X Make sure that the surface of the battery is
free of lint, grease and other contamina-
tion.
X Insert the front tabs of battery compart-
ment cover :into the housing and then
press to close it.
X Insert emergency key element ;into the
key.
X Check the function of all key buttons on the
vehicle. 88
KeyOpening and closing 

Problems with the key
Problem
Possible causes/consequences and
M
MSolutions You can no longer lock
or unlock the vehicle
using the key. The key battery is discharged or nearly discharged.
X Check the key battery (Y page 88) and replace it if necessary
(Y page 88).
If this does not work: X Lock (Y page 93) or unlock (Y page 93) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Lock (Y page 93) or unlock (Y page 93) the vehicle using the
emergency key element. The key is faulty.
X Lock (Y page 93) or unlock (Y page 93) the vehicle using the
emergency key element.
X Have the key checked at a qualified specialist workshop. You can no longer lock
or unlock the vehicle
using KEYLESS-GO. KEYLESS-GO was deactivated.
X Reactivate KEYLESS-GO (Y page 85). The key battery is discharged or nearly discharged.
X Check the key battery (Y page 88) and replace it if necessary
(Y page 88).
If this does not work: X Lock (Y page 93) or unlock (Y page 93) the vehicle using the
emergency key element. There is interference from a powerful source of radio waves.
X Lock (Y page 93) or unlock (Y page 93) the vehicle using the
emergency key element. There is a fault with KEYLESS-GO.
X Lock/unlock the vehicle using the remote control function of
the key.
X Have the vehicle and key checked at a qualified specialist work-
shop.
If the vehicle can also not be locked/unlocked using the remote
control function:
X Lock (Y page 93) or unlock (Y page 93) the vehicle using the
emergency key element.
X Have the vehicle and key checked at a qualified specialist work-
shop. Key
89Opening and closing Z