
1, 2, 3 ...
4ETS (Electronic Traction System)see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 197
12 V socket
see Socket (12 V)
115 V socket ...................................... 322
360° camera
Cleaning .........................................3 49
Function/notes .............................2 10
A
ABS (Anti-lock Braking System)
Display message ............................ 258
Function/notes ................................ 67
Important safety notes .................... 67
Warning lamp ................................. 294
Accident
Automatic measures after an acci-
dent ................................................. 60
Activating/deactivating cooling
with air dehumidification ................. 142
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 253
Display message ............................ 281
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 253
Display message ............................ 280
Function/information .................... 225
Active Parking Assist
Canceling ....................................... 205
Detecting parking spaces .............. 202
Display message ............................ 281
Exiting a parking space .................. 204
Function/notes ............................. 201
Important safety notes .................. 201
Parking .......................................... 203
ADAPTIVE BRAKE ................................. 75
Adaptive Brake Assist
Function/notes ................................ 72
Adaptive Damping System (ADS) ..... 196Adaptive Highbeam Assist
Display message ............................ 275
Function/notes ............................. 127
Switching on/off ........................... 128
Additional speedometer ................... 255
Additives (engine oil) ........................ 412
Air bags
Deployment ..................................... 57
Display message ............................ 271
Front air bag (driver, front
passenger) ....................................... 50
Important safety notes .................... 48
Introduction ..................................... 48
Knee bag .......................................... 50
Occupant Classification System
(OCS) ............................................... 51
PASSENGER AIR BAG indicator
lamps ............................................... 43
Side impact air bag .......................... 50
Window curtain air bag .................... 51
AIR BODY CONTROL
Display message ............................ 279
Function/notes ............................. 195
Lowering the rear of the vehicl e .... 197
R
aising the rear of the vehicle ....... 197
Air vents
Important safety notes .................. 149
Rear ............................................... 150
Setting ........................................... 149
Setting the center air vents ........... 149
Setting the side air vents ............... 150
Air-conditioning system
see Climate control
Alarm
ATA (Anti-Theft Alarm system) ......... 78
Switching off (ATA) .......................... 78
Switching the function on/off
(ATA) ................................................ 78
Armrest
Stowage compartment .................. 308
Ashtray ............................................... 320
Assistance display (on-board com-
puter) .................................................. 251
Assistance menu (on-board com-
puter) .................................................. 252
ASSYST PLUS
Displaying a service message ........ 343
4Index

Driving system ............................... 198
Function/notes ............................. 198
Important safety notes .................. 198
Problem (malfunction) ................... 201
Range of the sensors ..................... 198
Warning display ............................. 199
PASSENGER AIR BAG
Display message ............................ 271
Indicator lamps ................................ 43
Problems (malfunction) .................. 271
Perfume atomizer
Operating ....................................... 147
Perfume vial ................................... 147
Problem (malfunction) ................... 149
Pets in the vehicle ............................... 66
Plastic trim (cleaning instruc-
tions) .................................................. 350
Power washers .................................. 345
Power windows
see Side windows
PRE-SAFE
®(anticipatory occupant
protection)
Display message ............................ 265
Operation ......................................... 59
PRE-SAFE
®Brake
Activating/deactivating ................. 253
Display message ............................ 266
Function/notes ................................ 75
Important safety notes .................... 76
Warning lamp ................................. 301
PRE-SAFE
®PLUS (anticipatory
occupant protection PLUS)
Operation ......................................... 59
Protection against theft
ATA (Anti-Theft Alarm system) ......... 78
Immobilizer ...................................... 78
Protection of the environment
General notes .................................. 22
Pulling away
Automatic transmission ................. 157
General notes ................................ 157
Hill start assist ............................... 157
Trailer ............................................ 157
Q
QR codeMercedes-Benz Guide App ................. 1 Rescue card ..................................... 28
Qualified specialist workshop ........... 27
R
Radiator cover................................... 339
Radio
Selecting a station ......................... 248
Radio-wave reception/transmis-
sion in the vehicle
Declaration of conformity ................ 26
Reading lamp ..................................... 129
Rear compartment
Setting the air vents ...................... 150
Rear fog lamp
Display message ............................ 274
Switching on/off ........................... 125
Rear lamps
see Lights
Rear seat
Adjusting the angle of the backr-
ests ................................................ 312
Rear seats
Display message ............................ 289
Rear view camera
Cleaning instructions ..................... 348
Displays in the Audio display ......... 207
Displays in the COMAND display ... 207
Function/notes ............................. 206
Switching on/off ........................... 207
Rear window defroster
Problem (malfunction) ................... 147
Switching on/off ........................... 146
Rear window wiper
Replacing the wiper blade .............. 137
Switching on/off ........................... 135
Rear-view mirror
Anti-glare (manual) ........................ 118
Dipping (automatic) ....................... 120
Reflective safety jacket .................... 354
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 414
Refueling
Fuel gauge ....................................... 33
Important safety notes .................. 169
Refueling process .......................... 170
see Fuel
Index15

Fuel ................................................ 409
Important safety notes .................. 409
Refrigerant (air-conditioning sys-
tem) ............................................... 414
Washer fluid ................................... 413
Settings
Factory (on-board computer) ......... 256
On-board computer ....................... 252
Side impact air bag ............................. 50
Side marker lamp (display mes-
sage) ................................................... 274
Side windows
Cleaning ......................................... 347
Convenience closing feature ............ 99
Convenience opening feature .......... 99
Important safety information ........... 98
Opening/closing .............................. 98
Problem (malfunction) ................... 101
Resetting ....................................... 100
Reversing feature ............................. 98
Ski and snowboard bag .................... 309
Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 86
Changing the programming ............. 84
Checking the battery ....................... 86
Convenience closing feature .......... 100
Convenience opening feature .......... 99
Display message ............................ 290
Door central locking/unlocking ....... 83
Important safety notes .................... 82
KEYLESS-GO start function .............. 84
Loss ................................................. 87
Mechanical key ................................ 85
Overview .......................................... 82
Positions (ignition lock) ................. 153
Problem (malfunction) ..................... 87
Starting the engine ........................ 155
Smartphone
Starting the engine ........................ 156
Snow chains ...................................... 377
Socket (12 V)
Cargo compartment ....................... 322
Center console .............................. 321
General notes ................................ 321
Rear compartment ......................... 321 Special seat belt retractor
.................. 61
Specialist workshop ............................ 27
Speed, controlling
see Cruise control
Speedometer
Activating/deactivating the addi-
tional speedometer ........................ 255
Digital ............................................ 245
In the Instrume
nt cluster ................. 33
Segments ...................................... 238
Selecting the display unit ............... 255
see Instrument cluster
Standing lamps
Display message ............................ 274
Switching on/off ........................... 126
Start/Stop button
Starting the engine ........................ 156
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 155
STEER CONTROL .................................. 78
Steering
Display message ............................ 289
Warning lamps ............................... 303
Steering Assist and Stop&Go Pilot
(DISTRONIC PLUS)
Display message ............................ 284
Steering assistant STEER CON-
TROL
see STEER CONTROL
Steering wheel
Adjusting (electrically) ................... 116
Adjusting (manually) ...................... 115
Button overview ............................... 35
Buttons (on-board computer) ......... 239
Cleaning ......................................... 350
EASY ENTRY/EXIT feature ............. 117
Important safety notes .................. 115
Steering wheel heating .................. 116
Storing settings (memory func-
tion) ............................................... 122
Steering wheel heating
Problem (malfunction) ................... 117
Switching on/off ........................... 116
Steering wheel paddle shifters ........ 167
Stowage areas ................................... 306
Index17

GWARNING
After a short time, hill start assist will no lon-
ger brake your vehicle and it could roll away.
There is a risk of an accident and injury.
Therefore, quickly move your foot from the
brake pedal to the accelerator pedal. Never
leave the vehicle when it is held by hill start
assist.
Hill start assist is not active if:
Ryou are pulling away on a level road or on a downhill gradient.
Rthe transmission is in position N.
Rthe electric parking brake is applied.
RESP®is malfunctioning.
ECO start/stop function
Introduction
The ECO start/stop function switches the
engine off automatically if the vehicle is stop-
ped under certain conditions.
The engine starts automatically when the
driver wants to pull away again. The ECO
start/stop function thereby helps you to
reduce the fuel consumption and emissions
of your vehicle.
Important safety notes
GWARNING
If the engine is switched off automatically and
you exit the vehicle, the engine is restarted
automatically. The vehicle may begin moving.
There is a risk of accident and injury.
If you wish to exit the vehicle, always turn off
the ignition and secure the vehicle against
rolling away.
General notes
:ECO start/stop display
The ECO start/stop function is activated
whenever you start the engine using the
SmartKey or the Start/Stop button.
If the engine has been switched off automat-
ically by the ECO start/stop function, the
è ECO symbol is shown in the multifunc-
tion display.
Automatic engine switch-off
If the vehicle is braked to a standstill in Dor N,
the ECO start/stop function switches off the
engine automatically.
The ECO start/stop function is operational
when:
Rthe indicator lamp in the ECO button is lit
green.
Rthe outside temperature is within the range that is suitable for the system.
Rthe engine is at normal operating temper-
ature.
Rthe set temperature for the vehicle interior
has been reached.
Rthe battery is sufficiently charged.
Rthe system detects that the windshield is
not fogged up when the air-conditioning
system is switched on.
Rthe hood is closed.
Rthe driver's door is closed and the driver's
seat belt is fastened.
All of the vehicle's systems remain active
when the engine is stopped automatically.
The HOLD function can also be activated if the
engine has been switched off automatically. It
is then not necessary to continue applying the
brakes during the automatic stop phase.
158Driving
Driving and parking

When you depress the accelerator pedal, the
engine starts automatically and the braking
effect of the HOLD function is deactivated.
Automatic engine switch-off can take place a
maximum of four times in a row (initial stop,
then three subsequent stops).
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function
by pressing the ECO button
Ryou switch to drive programS+
Rin transmission positionDor Nthe brake
pedal is released and the HOLD function is
not active
Ryou depress the accelerator pedal
Ryou engage reverse gear R
Ryou move the transmission out of position
P
Ryou unfasten your seat belt or open the
driver's door
Rthe vehicle starts to roll
Rthe brake system requires this
Rthe temperature in the vehicle interior devi-
ates from the set range
Rthe system detects moisture on the wind-
shield when the air-conditioning system is
switched on
Rthe battery's condition of charge is too low
Shifting the transmission to position Pdoes
not start the engine.
Deactivating or activating the ECO
start/stop function
XTo deactivate: press ECO button :.
Indicator lamp ;goes out.
XTo activate: press ECO button :.
Indicator lamp ;lights up.
If indicator lamp ;is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will
then not be switched off automatically when
the vehicle stops.
Selecting drive program S+deactivates the
ECO start/stop function. If you press ECO
button :, the ECO start/stop function is
activated.
Driving159
Driving and parking
Z

Observe the following when towing a trailer:
RTo gain driving experience and to become
accustomed to the new handling charac-
teristics, you should practice the following
in a traffic-free location:
-cornering
-stopping
-backing up
RBefore driving, check:
-trailer tow hitch
-safety switch for braked trailers
-safety chains
-electrical connections
-lights
-wheels
RAdjust the exterior mirrors to provide an
unobstructed view of the rear section of the
trailer.
RIf the trailer has electronically controlled
brakes, pull away carefully. Brake manually
using the brake controller and check
whether the brakes function correctly.
RSecure any objects on the trailer to prevent
the cargo from slipping when the vehicle is
in motion.
RWhen you couple up a trailer, check at reg-
ular intervals that the load is firmly secured.
If the trailer is equipped with trailer lights
and brakes, check the trailer to ensure that
these are working.
RBear in mind that the handling will be less
stable when towing a trailer than when driv-
ing without one. Avoid sudden steering
movements.
RThe vehicle/trailer combination is heavier,
accelerates more slowly, has a decreased
gradient climbing capability and a longer
braking distance.
It is more susceptible to side winds and
requires more careful steering.
RIf possible, do not brake suddenly, but
instead depress the brake pedal moder-
ately at first so that the trailer can activate its brakes. Then increase the pressure on
the brake pedal.
RIf the automatic transmission repeatedly
shifts between gears on uphill or downhill
gradients, shift to a lower gear using the
left-hand steering wheel paddle shifter.
A lower gear and lower speed reduce the
risk of engine failure.
RWhen driving downhill, shift to a lower gear
to utilize the engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if
installed, the trailer brakes.
RIf the coolant temperature increases dra-
matically while the air-conditioning system is switched on, switch off the air-condition-
ing system.
Coolant heat can also be dissipated by
opening the windows and switching the
ventilation blower and the interior temper-
ature to the highest level.
RWhen overtaking, pay particular attention
to the extended length of your vehicle/
trailer combination.
Due to the length of the vehicle/trailer
combination, you require addi
tional road
space in relation to the vehicle you are
overtaking before you can change back to
the original lane.
Decoupling a trailer
GWARNING
If you uncouple a trailer with the overrun
brake engaged, you could trap your hand
between the vehicle and the trailer drawbar.
There is a risk of injury.
Do not uncouple a trailer if the overrun brake
is engaged.
!Do not disconnect a trailer with an
engaged overrun brake. Otherwise, your
vehicle could be damaged by the rebound-
ing of the overrun brake.
Towing a trailer233
Driving and parking
Z