
Adjusting volume
Audio 20 ........................................ 254
Air conditioning
General notes ................................ 122
AIR FLOW .......................................... .125
Air pressure
see Tyre pressure
Air vents
Glove compartment ....................... 130
Important safety notes .................. 129
Setting .......................................... .129
Setting the blower output of the
AIRSCARF vents ............................ .130
Setting the centre air vents ........... 129
Setting the side air vents .............. .130
Switching AIRSCARF on/off .......... 105
Air-conditioning system
see Climate control
Airbag
Automatic front-passenger front
airbag deactivatio n .......................... 46
Headbag .......................................... 46
Introduction ..................................... 43
PASSENGER AIR BAG indicator
lamps ............................................... 40
Airbags
Display message ............................ 226
Front airbag (driver, front
passenger) ....................................... 45
Important safety guidelines ............. 43
Sidebag ............................................ 45
Triggering ......................................... 51
AIRSCARF
Switching on/off ........................... 105
AIRSCARF vents
Setting the blower output .............. 130
Alarm
ATA (Anti-Theft Alarm system) ......... 74
Switching off (ATA) .......................... 74
Switching the function on/off
(ATA) ................................................ 74
Alarm system
see ATA (Anti-Theft Alarm system)
Ambient lighting
Setting the brightness (on-board
computer) ...................................... 210
Setting the colour (on-board com-
puter) ............................................. 210 AMG menu (on-board computer)
..... 213
Anti-glare film ................................... .275
Anti-lock braking system
see ABS (Anti-lock Braking System)
Anti-Theft Alarm system
see ATA (Anti-Theft Alarm system)
Aquaplaning ....................................... 158
Ashtray ............................................... 267
Assistance display (on-board com-
puter) ................................................. .207
Assistance menu (on-board com-
puter) ................................................. .207
ASSYST PLUS
Displaying a service message ....... .281
Hiding a service message .............. 281
Resetting the service interval dis-
play ................................................ 281
Service message ............................ 280
Special service requirements ......... 281
ATA (Anti-Theft Alarm system)
Activating/deactivating ................... 74
Function .......................................... .74
Switching off the alarm .................... 74
ATTENTION ASSIST
Activating/deactivating ................. 208
Display message ............................ 232
Function/note s............................. 190
Audio 20
Switching on/of f........................... 253
Audio menu (on-board computer) .... 204
Authorised workshop
see Qualified specialist workshop
AUTO lights
Display message ............................ 228
see Lights
Automatic engine start (ECO start/
stop function) .................................... 136
Automatic engine switch-off (ECO
start/stop function) .......................... 135
Automatic front-passenger front
airbag deactivation
Display message ............................ 226
Automatic front-passenger front
airbag deactivation system
Operation ......................................... 46
Problems ......................................... 50
System self-test ............................... 48 4
Index

Operating instructions
Vehicle equipment ........................... 24
Operating safety
Declaration of conformit y................ 25
Important safety note ...................... 24
Operating system
see On-board computer
Operation
Digital Owner's Manua l.................... 22
Outside temperature display ........... 199
Overhead control panel ...................... 37P
Paint code .......................................... 321
Paintwork (cleaning instructions) ... 283
Panic alarm .......................................... 39
Panoramic roof
Operating the roller sunblind ........... 98
Parking
Important safety notes .................. 153
Parking brake ................................ 154
Position of exterior mirror, front-
passenger side ............................... 110
Reversing camera .......................... 187
see PARKTRONIC
Parking aid
Active Parking Assist ..................... 183
see Exterior mirrors
see PARKTRONIC
Parking assistance
see PARKTRONIC
Parking brake
Applying automaticall y................... 155
Applying or releasing manually ...... 154
Display message ............................ 219
Electric parking brake .................... 154
Emergency braking ........................ 155
General information ....................... 154
Releasing automaticall y................. 155
Warning lamp ................................. 248
Parking lamps
Display message ............................ 228
Switching on/of f........................... 114
Parking Pilot
Display Message ............................ 233
PARKTRONIC
Deactivating/activating ................. 182 Driving system ............................... 180
Function/note
s............................. 180
Important safety notes .................. 180
Problem (fault) ............................... 183
Sensor rang e................................. 180
Warning display ............................. 181
PASSENGER AIR BAG
Display message ............................ 226
Indicator lamps ................................ 40
Problems (malfunctions) ................ 226
Pets in the vehicle ............................... 61
Phone book
See also Digital Owner's Manua l... 253
Power closing ...................................... 84
Power socket
Boot ............................................... 268
Power windows
see Side windows
PRE-SAFE ®
(anticipatory occupant
protection)
Operation ......................................... 53
PRE-SAFE ®
(preventive occupant
safety system)
Display message ............................ 222
PRE-SAFE ®
PLUS (anticipatory
occupant protection PLUS)
Operation ......................................... 53
Protection against theft
ATA (Anti-Theft Alarm system )......... 74
Immobiliser ...................................... 74
Interior motion sensor ..................... 75
Tow-away protection ........................ 75
Protection of the environment
General notes .................................. 23
Pulling away
General notes ................................ 134
Pulling away (automatic transmis-
sion) .................................................... 134 Q
QR code Mercedes-Benz Guide App ................. 1
Rescue card ..................................... 28
Qualified specialist workshop ........... 27 Index
15

Panic alarm
X
To activate: press!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 X Press the KEYLESS-GO Start/Stop button.
The KEYLESS-GO 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. Furthermore, the restraint system can also
reduce the forces to which vehicle occupants
are subjected during an accident.
The restraint system includes:
R Seat belt system
R Airbags
R Child restraint system
R Child seat securing system The various components of the restraint system
work complementary to one another. They can
only perform their intended protective function
if all vehicle occupants:
R have correctly fastened their seat belt
(Y page 42)
R have correctly adjusted their seat and head
restraint (Y page 101).
As the driver, you must also ensure that the
steering wheel is correctly adjusted. Observe
the information relating to the correct driver's
seat position (Y page 101).
Additionally, you must ensure that an airbag can
deploy freely (Y page 43).
The airbag is supplementary to a correctly fas-
tened seat belt. As an additional safety device,
the airbag increases the level of protection for
vehicle occupants in the event of an accident. If the protection provided by the seat belt is suf-
ficient, the airbags do not deploy. Furthermore,
in the event of an accident, only airbags which
provide greater protection in the given accident situation deploy. However, seat belts and air-
bags generally do not protect against objects
penetrating the vehicle from the outside.
Information on how the restraint system oper-
ates can be found in "Deployment of the seat
belt tensioner and airbags" (Y page 51).
See "Children in the vehicle" for information on
infants and children traveling with you in the
vehicle restraint systems for infants and chil-
dren(Y page 54). 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.
Never modify parts of the restraint system. Do not attempt to modify the wiring as well as
electronic components or their software.
If it is necessary to modify an airbag system to
accommodate a person with disabilities, con-
tact a qualified specialist workshop for details. Occupant safety
39Safety Z

If the risk of a collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking up
to the point of full brake application. Automatic
emergency braking is not performed until imme- diately prior to an imminent accident.
You can prevent the intervention of Active Brake Assist with cross-traffic function at any time by:
R depressing the accelerator pedal further
R activating kickdown
R releasing the brake pedal
The braking application of Active Brake Assist
with cross-traffic function is ended automati-
cally if:
R you manoeuvre to avoid the obstacle
R there is no longer a risk of collision
R there is no longer an obstacle detected in
front of your vehicle STEER CONTROL
General notes STEER CONTROL helps you by transmitting a
noticeable steering force to the steering wheel
in the direction required for vehicle stabilisation.
This steering support is provided in particular if:
R both right wheels or both left wheels are on a
wet or slippery road surface when you brake
R the vehicle starts to skid
Important safety notes i
Observe the "Important safety notes" sec-
tion (Y page 62).
No steering support is provided from STEER
CONTROL, if:
R ESP ®
is deactivated
R ESP ®
is malfunctioning
R the steering is faulty
If ESP ®
is malfunctioning, you will be assisted
further by the electrical power steering. 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. The engine can be
started by anyone with a valid key that is 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.
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 boot lid
R the bonnet
R the glove compartment
R the stowage space under the armrest
R a stowage compartment in the rear 74
Protection against theftSafety

X
To deactivate the alarm with the key: press
the % or& button on the key.
The alarm stops.
or 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. 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.
Activating X
Make sure that:
R the doors are closed
R the boot lid is closed
Only then is tow-away protection activated.
X Lock the vehicle with the key or KEYLESS-GO.
Tow-away protection is primed after approx-
imately 30 seconds.
Switching off X
To switch off: unlock the vehicle with the key
or KEYLESS-GO.
Tow-away protection is switched off automat- ically. Deactivating X
Remove the key from the ignition lock.
X Press button :.
Indicator lamp ;lights up briefly.
X Lock the vehicle with the key or KEYLESS-GO.
Tow-away protection is deactivated.
Tow-away protection remains deactivated until:
R the vehicle is unlocked again
R a door is opened and closed again
R the vehicle is locked again
To prevent a false alarm, deactivate tow-away
protection if you lock your vehicle and it:
R is being transported
R is being loaded onto a ferry or car transporter,
for example
R is parked on a movable surface, e.g. in a split-
level garage Interior motion sensor
Function When the interior motion sensor is primed, a
visual and audible alarm is triggered if move-
ment is detected in the vehicle interior. This can occur if someone reaches into the vehicle inte-
rior, for example.
Priming X
Make sure that:
R the side windows are closed
R the roof is closed
R the stowage compartment under the arm-
rest is closed
This will prevent false alarms.
X Make sure that: Protection against theft
75Safety Z

R
the doors are closed
R the boot lid is closed
Only then is the interior motion sensor acti-
vated.
X Lock the vehicle with the key or KEYLESS-GO.
The interior motion sensor is primed after
approximately 30 second s.
Switching off X
Unlo ck the vehicle with the key or KEYLESS-
GO.
The interior motion sensor is automatically
switched off.
Deactivating X
Remove the key from the ignition lock.
X Press button :.
Indicator lamp ;flashes several times in
rapid succession.
X Lock the vehicle with the key or KEYLESS-GO.
The interior motion sensor is deactivated.
To prevent a false alarm, deactivate the interior
motion sensor if you lock your vehicle and:
R people or animals remain in the vehicle
R the side windows remain open
The interior motion sensor remains deactivated until:
R the vehicle is unlocked again
R a door is opened and closed again
R the vehicle is locked again
UK only: your vehicle is equipped with a double-
lock function. The doors cannot be opened from
the inside if the vehicle has been locked with the
key or with KEYLESS-GO. Deactivate the interior
motion sensor before you lock the vehicle. The
doors can then be opened from the inside after the vehicle has been locked from the outside. Observe the "Important safety notes"
(Y
page 82). 76
Protection against theftSafety

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.
If the vehicle has been locked 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. You can deactivate the
double lock function by deactivating the interior
motion sensor (Y page 76). The doors can then
be opened from the inside after the vehicle has
been locked from the outside. The anti-theft
alarm system is triggered if the door is opened
from the inside. Switch off the alarm
(Y page 74).
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. Key functions
:
& Locks the vehicle
; F Opens/closes the boot lid
= % Unlocks the vehicle
X To unlock centrally: press the%button.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
R the vehicle locks again
R protection against theft is reactivated
X To lock centrally: press the&button. Key
77Opening and closing Z

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 simultaneously
for about six seconds until the battery indica- tor lamp flashes twice (Y page 80).
If the setting of the locking system is changed
within the signal range of the vehicle, pressing
the & or% button:
R locks or
R unlocks the vehicle
The key now functions as follows:
X To unlock: press the%button once.
X To unlock centrally: press the%button
twice.
X To lock centrally: press the&button.
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 surface
of the driver or 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 simul-
taneously for approximately six seconds until
the battery check lamp flashes twice
(Y page 80). Emergency key element
General notes If the vehicle can no longer be locked or
unlocked with the key or with KEYLESS-GO, use the emergency key element.
If you use the emergency key element to unlock
and open the driver's door or the boot lid, the
anti-theft alarm system will be triggered. Switch
off the alarm (Y page 74). Removing the emergency key element X
Push release catch :in the direction of the
arrow and, at the same time, remove emer-
gency key element ;from the key.
Further information about: R Unlocking the driver's door (Y page 84)
R Unlocking the boot (Y page 89)
R Locking the vehicle (Y page 84)
Inserting the emergency key element X
Push emergency key element ;completely
into the key until it engages and release
catch :is back in its basic position. 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 an Key
79Opening and closing
Z