
K
Key Changing the battery ...................... .81
Checking the battery ...................... .81
Convenience closing feature ............ 94
Convenience opening feature .......... 93
Display message ............................ 285
Door central locking/unlocking ...... .79
Emergency key element ................... 80
Important safety note s.................... 78
KEYLESS-GO start function .............. 80
Loss ................................................. 83
Modifying the programming ............. 80
Overview .......................................... 78
Positions (ignition lock) ................. 146
Problem (malfunction) ..................... 83
Starting the engine ........................ 148
Key positions
Key ................................................ 146
Start/Stop button .......................... 146
KEYLESS-GO
Convenience closing ........................ 94
Deactivation ..................................... 79
Display message ............................ 285
Locking ............................................ 79
Start function ................................... 80
Starting the engine ........................ 148
Unlocking ......................................... 79
Kickdown
Driving tip s.................................... 157
Manual gearshifting ....................... 160
Kneebag ............................................... 44 L
Lamps see Warning and indicator lamps
Lane Keeping Assist
Activating/deactivating ................. 245
Display message ............................ 274
Function/information .................... 220
see Active Lane Keeping Assist
Lap time (RACETIMER) ...................... 250
Lashing eyelets ................................. 303
Level control (display message) ...... 273
Licence plate lamp (display mes-
sage) ................................................... 267 Light sensor (display message)
....... 268
Lights
Activating/deactivating the Intel-
ligent Light System ........................ 246
Active light function ....................... 118
Adaptive Highbeam Assist PLUS .... 119
Automatic headlamp mode ............ 115
Cornering light function ................. 118
Dipped-beam headlamp s............... 116
Driving abroad ............................... 115
Foglamps (extended range) ........... 119
Hazard warning lamps ................... 117
Headlamp flashe r........................... 117
Light switch ................................... 115
Main-beam headlamp s................... 117
Motorway mode ............................. 118
Parking lamps ................................ 116
Rear foglamp ................................. 116
Side lamps ..................................... 116
Turn signals ................................... 117
see Interior lighting
LIM indicator lamp
Cruise control ................................ 179
DISTRONIC PLUS ........................... 184
Variable SPEEDTRONIC ................. 181
Limiting the speed
see SPEEDTRONIC
Loading guidelines ............................ 299
Locking
see Central locking
Locking (doors)
Automatic ........................................ 86
Emergency locking ........................... 87
From inside (central locking but-
ton) .................................................. 85
Locking centrally
see Central locking
Locking verification signal (on-
board computer) ............................... 247
Luggage compartment enlarge-
ment
Important safety notes .................. 302
Luggage compartment floor
Important safety notes .................. 305
opening/closing ............................ 305
stowage well, under ....................... 305
Lumbar support
Adjusting (on the seat) .................. 105 12
Index 

Setting the airflow
............................1 33
Settings
Factory (on-board computer) ......... 249
On-board computer ....................... 245
SETUP (on-board computer) ............. 250
Side lamps
Switching on/off ........................... 116
Side marker lamp Display mes-
sage .................................................... 267
Side windows
Convenience closing ........................ 94
Convenience opening ..................... .93
Important safety notes .................... 92
Opening/closing .............................. 93
Overview .......................................... 92
Problem (malfunction) .....................96
Resetting ........................................ .95
Reversing feature ............................ .92
Sidebag ................................................ 44
Sliding sunroof
see Panorama sliding sunroof
Snow chains
Information .................................... 351
Socket
Luggage compartment ...................3 10
Sockets
Centre console .............................. 309
General notes ................................ 309
Rear compartment ......................... 310
Specialist workshop ............................ 25
Spectacles compartment ................. 301
Speed, controlling
see Cruise control
Speedometer
Digital ............................................ 239
In the Instrument cluster ................. 29
Segments ...................................... 235
Selecting a display unit .................. 246
SPEEDTRONIC
Activating variable ......................... 181
Deactivating variable ..................... 182
Display message ............................ 277
Function/notes ............................ .180
Important safety notes .................. 181
LIM indicator lamp ......................... 181
Permanent ..................................... 182
Selecting ........................................ 181 Storing the current spee
d.............. 181
Variabl e......................................... 181
Start/Stop button
Removing ....................................... 147
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 148
STEER CONTROL .................................. 74
Steering
Display message ............................ 284
Steering Assist and Stop&Go Pilot
(DISTRONIC PLUS)
Activating/deactivating ................. 244
Display message ............................ 277
Steering assistant STEER CON-
TROL
see STEER CONTROL
Steering wheel
Adjusting (electrically) ................... 109
Adjusting (manually) ...................... 108
Button overview ............................... 32
Buttons (on-board computer) ......... 236
Cleaning ......................................... 329
Important safety notes .................. 108
Steering wheel heating .................. 109
Storing settings (memory func-
tion) ............................................... 114
Steering wheel gearshift paddles .... 158
Steering wheel heating
Problem (malfunction) ................... 110
Switching on/of f........................... 109
Stopwatch (RACETIMER) ................... 250
Stowage areas ................................... 299
Stowage compartments
Armrest (under) ............................. 300
Centre console .............................. 301
Centre console (rear) ..................... 301
Cup holde r..................................... 306
Glove compartment ....................... 300
Important safety information ......... 299
Spectacles compartment ............... 301
Stowage net ....................................... 301
Stowage space
Stowage net ................................... 301
Summer tyres .................................... 350
Sun visor ............................................ 308 Index
17 

Cockpit
Function Page
:
Steering wheel gearshift pad-
dles 158
;
Combination switch 117
=
Instrument cluster 29
?
Horn
A
DIRECT SELECT lever 154
B
PARKTRONIC warning dis-
play
199
C
Overhead control panel 35
D
Climate control systems 126
E
Ignition lock 146
Start/Stop button 146 Function Page
F
Adjusts the steering wheel
manually
108
G
Adjusts the steering wheel
electrically
108
Steering wheel heating 109
H
Cruise control lever 179
I
Opens the bonnet 319
J
Diagnostics connection 24
K
Electric parking brake 169
L
Light switch 115Cockpit
27At a glance 

Function Page
:
Overhead control panel 35
;
PARKTRONIC warning dis-
play
199
=
Combination switch 117
?
Instrument cluster 29
A
Horn
B
DIRECT SELECT lever 154
C
Steering wheel gearshift pad-
dles 158
D
Light switch 115
E
Electric parking brake 169 Function Page
F
Diagnostics connection 24
G
Opens the bonnet 319
H
Ignition lock 146
Start/Stop button 146
I
Adjusts the steering wheel
manually
108
J
Adjusts the steering wheel
electrically
108
Steering wheel heating 109
K
Cruise control lever 179
L
Climate control systems 12628
CockpitAt a glance 

Useful information
i This Owner's Manual describes all models,
series and optional equipment for your vehi-
cle that were available at the time of going to
press. National variations are possible. Note
that your vehicle may not be equipped with all
of the functions described. This is also the
case for systems and functions relevant to
safety.
i Read the information on qualified specialist
workshops: (Y page 25). Panic alarm
X
To prime: press the!button :for
approximately one second.
A visual and audible alarm is triggered if the
alarm system is primed.
X To deactivate: press the!button :
again.
or
X Insert the key into the ignition lock.
or, on vehicles with KEYLESS‑GO: X Press the Start/Stop button.
The key must be in the vehicle.
The panic alarm function is only available in cer- tain countries. Occupant safety
Introduction to the restraint system
The restraint system can reduce the risk of vehi- cle occupants coming into contact with parts of
the vehicle's interior in the event of an accident.
The restraint system can also reduce the forces to which vehicle occupants are subjected during
an accident.
The restraint system comprises:
R Seat belt system
R Airbags
R Child restraint system
R Child seat securing systems
The components of the restraint system work in
conjunction with each other. They can only
deploy their protective function if all vehicle
occupants always:
R fasten their seat belts correctly
(Y page 40)
R adjust their seat and head restraint properly
(Y page 102).
As the driver, you also have to make sure that
the steering wheel is adjusted correctly.
Observe the information relating to the correct
driver's seat position (Y page 101).
You also have to make sure that an airbag can
inflate properly if deployed (Y page 42).
An airbag supplements a correctly fastened seat belt. As an additional safety device, the airbag
increases the level of protection for vehicle
occupants in the event of an accident. For exam-
ple, if the protection of the seat belt is sufficient in an accident, the airbags are not deployed. In
the event of an accident, only the airbags that
increase protection in the relevant accident sit- uation are deployed. However, seat belts and
airbags generally do not protect against objects penetrating the vehicle from the outside.
Information on the restraint system operation
can be found under "Triggering of belt tension-
ers and airbags" (Y page 49).
For more information about children travelling
with you in the vehicle, see "Children in the vehi-
cle" (Y page 52). Important safety notes
G
WARNING
If the restraint system is modified, it may no
longer work as intended. The restraint system
may then not perform its intended protective function by failing in an accident or triggering
unexpectedly, for example. There is an
increased risk of injury, possibly even fatal. Occupant safety
37Safety
Z 

seat belt, a windowbag may be deployed in other
accident situations (Y page 49).Automatic front-passenger front air-
bag deactivation
Introduction In order to recognise a child restraint system on
the front-passenger seat, the automatic front-
passenger front airbag deactivation system cat-
egorises the person in the front-passenger seat. Depending on that result, the front-passenger
front airbag is either enabled or disabled. If a
rearward-facing child restraint system is fitted
to the front-passenger seat, the PASSENGER
AIR BAG OFF indicator lamp must light up after
the system self-test and remain lit. The front-
passenger front airbag is disabled.
The system does not disable:
R the sidebag
R the windowbag
R the seat belt tensioner
In the following situation, the sidebag and the
seat belt tensioner are deactivated:
R the automatic front-passenger front airbag
deactivation system has not categorised the
person on the front-passenger seat as an
adult or a person of corresponding stature
and
R the seat belt tongue of the seat belt is not
inserted into the front-passenger seat belt
buckle
Make sure that your vehicle is equipped with the automatic front-passenger front airbag deacti-
vation system (Y page 56). If this is not the
case, always install a child restraint system on a suitable rear seat (Y page 57).
If it is absolutely necessary to install a child
restraint system on the front-passenger seat, be
sure to observe the correct positioning of the
child restraint system. Never place objects
under or behind the child restraint system, e.g. a
cushion. The entire base of the child restraint
system must always rest on the seat cushion of
the front-passenger seat. The backrest of the
forward-facing child restraint system must, as
far as possible, be resting on the backrest of the
front-passenger seat. The child restraint system must not touch the roof or be put under strain bythe head restraint. Adjust the angle of the seat
backrest and the head restraint position accord- ingly. Only then is the correct function of the
automatic front-passenger front airbag deacti-
vation system guaranteed. Always observe the
information on suitable positioning of the child
restraint system (Y
page 57) in addition to the
child restraint system manufacturer's installa-
tion instructions.
Operation of automatic front-passenger
front airbag deactivation :
PASSENGER AIR BAG ON indicator lamp
; PASSENGER AIR BAG OFF indicator lamp
The indicator lamps inform you whether the
front-passenger front airbag is disabled or ena-
bled. X Press the Start/Stop button once or twice, or
turn the key to position 1or 2in the ignition
lock.
The system carries out a self-diagnosis.
The PASSENGER AIR BAG OFF and PASSENGER AIR BAG ON indicator lamps must light up simul-
taneously for approximately six seconds.
The indicator lamps display the status of the
front-passenger front airbag:
R PASSENGER AIR BAG ON lights up: the front-
passenger front airbag is enabled. If, in the
event of an accident, all deployment criteria
are met, the front-passenger front airbag is
deployed.
R PASSENGER AIR BAG OFF lights up: the front-
passenger front airbag is disabled. It will then
not be deployed in the event of an accident.
If the status of the front-passenger front airbag
changes while the vehicle is in motion, an airbag display message appears in the instrument clus-
ter (Y page 264). When the front-passenger
seat is occupied, always pay attention to the
PASSENGER AIR BAG ON and PASSENGER AIR
BAG OFF indicator lamps. Be aware of the status Occupant safety
45Safety Z 

Protection against theft
Immobiliser
X To activate with the key: remove the key
from the ignition lock.
X To activate with KEYLESS-GO: switch the
ignition off and open the driver's door.
X To deactivate: switch on the ignition.
The immobiliser prevents your vehicle from
being started without the correct key.
When leaving the vehicle, always take the key
with you and lock the vehicle. Anyone can start
the engine if a valid key has been left inside the vehicle.
i The immobiliser is always deactivated when
you start the engine. ATA (Anti-Theft Alarm system)
X
To prime: lock the vehicle with the key or
KEYLESS-GO.
Indicator lamp :flashes. The alarm system
is primed after approximately 15 seconds.
X To switch off: unlock the vehicle with the key
or KEYLESS-GO.
or X Insert the key into the ignition lock.
A visual and audible alarm is triggered if the
alarm system is primed and you open: R a door
R the vehicle with the emergency key element
R the tailgate
R the bonnet X
To stop the alarm with the key: press the
% or& button on the key.
The alarm stops.
or X Remove the Start/Stop button from the igni-
tion lock.
X Insert the key into the ignition lock.
The alarm stops.
X To stop the alarm using KEYLESS-GO:
grasp the outside door handle. The key must
be outside the vehicle.
The alarm stops.
or X Press the Start/Stop button on the dash-
board. The key must be inside the vehicle.
The alarm stops.
The alarm does not switch off, even if you close the open door that has triggered it, for example.
i If the alarm stays on for more than
30 seconds, the Mercedes‑Benz emergency
call system automatically sends a message to
the Customer Assistance Centre. This is done by means of a text message or a data con-
nection. The emergency call system sends a
message or establishes a data connection
provided that:
R you have subscribed to the Mercedes ‑Benz
emergency call system
R the Mercedes‑Benz emergency call system
has been activated properly
R the necessary mobile phone network is
available Tow-away protection
Function An audible and visual alarm is triggered if your
vehicle's angle of inclination is altered while
tow-away protection is primed. This can occur if
the vehicle is jacked up on one side, for exam-
ple.
Priming X
Make sure that: Protection against theft
75Safety Z 

Useful information
i This Owner's Manual describes all models,
series and optional equipment for your vehi-
cle that were available at the time of going to
press. National variations are possible. Note
that your vehicle may not be equipped with all
of the functions described. This is also the
case for systems and functions relevant to
safety.
i Read the information on qualified specialist
workshops: (Y page 25). Key
Important safety notes
United Kingdom only: G
WARNING
When the double locks are activated, the
doors can no longer be opened from the
inside. People in the vehicle can no longer get out, e.g. in hazardous situations. There is a
risk of injury.
Therefore, do not leave any people unsuper-
vised in the vehicle, particularly children, eld-
erly people or people in need of special assis-
tance. Do not activate the double lock when
people are in the vehicle.
All countries: G
WARNING
If children are left unsupervised in the vehicle, they can:
R open doors and endanger other persons or
road users
R climb out and be injured by the traffic
R operate vehicle equipment and, for exam-
ple, trap themselves.
Children could also set the vehicle in motion, for example by:
R releasing the parking brake
R shifting the automatic transmission out of
park position P
R starting the engine. There is a risk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle. Always
keep the key out of reach of children. G
WARNING
If you attach heavy or large objects to the key, the key could be unintentionally 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 the
key. Remove any bulky keyrings before insert-
ing the key into the ignition lock.
! Keep the key away from strong magnetic
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 key: R with electronic devices, e.g. a mobile phone
or another key
R with metallic objects, e.g. coins or metal film
R inside metallic objects, e.g. a metal case
This can affect the key's functionality.
Do not keep the KEYLESS-GO or KEYLESS-GO
Start function key in the temperature-controlled
cup holder. Otherwise, the KEYLESS-GO or KEY- LESS-GO Start function key will not be detected.
Vehicles with KEYLESS-GO start function: do
not keep the key in the luggage compartment.
Otherwise, the key may not be detected, e.g.
when starting the engine using the Start/Stop
button.
Only for the United Kingdom: if the vehicle
has been locked with the key from the outside,
the double lock function is activated as stand-
ard. It is then not possible to open the doors
from inside the vehicle. 78
KeyOpening and closing