
1, 2, 3 ...
4ETS (Electronic Traction System)see ETS/4ETS (Electronic Trac-
tion System)
4MATIC (permanent four-wheel
drive) .................................................. 180
12 V socket
see Sockets
115 V socket ...................................... 289
360° camera
Cleaning ........................................ .312
Display in the multimedia system .. 198
Function/notes .............................1 97
A
ABS (Anti-lock Braking System)
Display message ............................ 235
Function/notes ................................ 60
Important safety notes .................... 60
Warning lamp ................................. 268
Accident
Automatic measures after an acci-
dent ................................................. 53
Activating/deactivating cooling
with air dehumidification ................. 124
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 228
Display message ............................ 255
Function/information .................... 206
Trailer towing ................................. 209
Active Curve System
Display message ............................ 253
Function/notes ............................. 183
Active Driving Assistance package .. 206
Active Lane Keeping Assist
Activating/deactivating (on-
board computer) ............................ 228
Display message ............................ 255
Function/information .................... 209
Trailer towing ................................. 211
Active Parking Assist
Display message ............................ 256
Exiting a parking space .................. 192
Function/notes ............................. 189
Important safety notes .................. 189 Parking .......................................... 191
ADAPTIVE BRAKE ................................. 68
Adaptive Brake Assist
Function/notes ................................ 64
Adaptive Damping System
Function/notes ............................. 185
Adaptive Highbeam Assist
Display message ............................ 249
Function/notes ............................. 111
Switching on/off ........................... 112
Additives (engine oil) ........................ 371
ADS (Adaptive Damping System)
Function/notes ............................. 182
Air bags
Deployment ..................................... 50
Display message ............................ 244
Front air bag (driver, front
passenger) ....................................... 44
Important safety notes .................... 43
Introduction ..................................... 43
Knee bag .......................................... 44
Occupant Classification System
(OCS) ............................................... 45
PASSENGER AIR BAG indicator
lamps ............................................... 39
Side imp act a
ir bag .......................... 45
Window curtain air bag .................... 45
Air filter (display message) .............. 252
AIR FLOW ........................................... 126
Air vents
Glove box ....................................... 131
Important safety notes .................. 131
Rear ............................................... 132
Setting ........................................... 131
Setting the center air vents ........... 131
Setting the side air vents ............... 131
Air-conditioning system
see Climate control
AIRMATIC package
ADS (Adaptive Damping System) ... 182
Function/notes ............................. 182
Alarm
ATA (Anti-Theft Alarm system) ......... 70
Switching off (ATA) .......................... 70
Switching the function on/off
(ATA) ................................................ 70
Index3

Rear fog lampDisplay message ............................ 247
Switching on/off ........................... 109
Rear seats
Adjusting ......................................... 98
Rear view camera
Cleaning instructions ..................... 311
Display in the multimedia system .. 194
Function/notes ............................. 193
Switching on/off ........................... 194
Rear window defroster
Problem (malfunction) ................... 130
Switching on/off ........................... 129
Rear-view mirror
Anti-glare (manual) ........................ 104
Dipping (automatic) ....................... 105
Refrigerant (air-conditioning sys-
tem)
Important safety notes .................. 373
Refueling
Fuel gauge ....................................... 31
Important safety notes .................. 150
Refueling process .......................... 151
see Fuel
Remote control
Garage door opener ....................... 298
Programming (garage door
opener) .......................................... 299
Replacing bulbs
General notes ................................ 113
Reporting safety defects .................... 27
Rescue card ......................................... 27
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 251
Warning lamp ................................. 274
Residual heat (climate control) ........ 130
Restraint system
Display message ............................ 242
Introduction ..................................... 38
Warning lamp ................................. 273
Warning lamp (function) ................... 39
Reversing feature
Panorama sliding sunroof ................ 90
Roller sunblind ................................. 91
Side windows ................................... 85
Tailgate ............................................ 82 Reversing lamps (display mes-
sage)
................................................... 247
Roadside Assistance (breakdown) .... 24
Roller sunblind
Panorama roof with power tilt/
sliding panel ..................................... 91
Roof carrier ........................................ 285
Roof lining and carpets (cleaning
guidelines) ......................................... 314
Roof load (maximum) ........................ 373
Route (navigati on)
se
e Route guidance (navigation)
Route guidance (navigation) ............ 223
S
Safety
Children in the vehicle ..................... 54
see Occupant safety
SD memory card
Selecting ........................................ 225
Seat belts
Adjusting the driver's and front-
passenger seat belt ......................... 42
Adjusting the height ......................... 42
Cleaning ......................................... 314
Correct usage .................................. 41
Fastening ......................................... 42
Important safety guidelines ............. 40
Introduction ..................................... 40
Releasing ......................................... 42
Switching belt adjustment on/off
(on-board computer) ...................... 230
Warning lamp ................................. 265
Warning lamp (function) ................... 42
Seats
Adjusting (electrically) ..................... 96
Adjusting the head restraint ............ 96
Cleaning the cover ......................... 313
Correct driver's seat position ........... 94
Folding the rear bench seat for-
wards/back ................................... 281
Important safety notes .................... 95
Overview .......................................... 95
Seat heating problem .................... 100
Seat ventilation problem ................ 101
Storing settings (memory func-
tion) ............................................... 107
Index15

Switching seat heating on/off ......... 98
Switching seat ventilation on/off .. 100
Section
Sliding sunroof ................................. 89
Selector lever
Cleaning ......................................... 313
Sensors (cleaning instructions) ....... 311
Service menu (on-board com-
puter) .................................................. 229
Service message
see ASSYST PLUS
Service products
Brake fluid ..................................... 371
Coolant (engine) ............................ 372
DEF special additives ..................... 370
Engine oil ....................................... 370
Fuel ................................................ 368
Important safety notes .................. 367
Refrigerant (air-conditioning sys-
tem) ............................................... 373
Washer fluid ................................... 372
Setting the air distribution ............... 127
Setting the airflow ............................ 127
Settings
Factory (on-board computer) ......... 231
On-board computer ....................... 229
SETUP (on-board computer) ............. 232
Side impact air bag ............................. 45
Side marker lamp (display mes-
sage) ................................................... 247
Side windows
Cleaning ......................................... 310
Convenience closing feature ............ 87
Convenience opening feature .......... 86
Important safety information ........... 85
Opening/closing .............................. 86
Overview .......................................... 85
Problem (malfunction) ..................... 89
Resetting ......................................... 88
Reversing feature ............................. 85
Sliding sunroof
see Panorama roof with power
tilt/sliding panel
SmartKey
Changing the battery ....................... 75
Changing the programming ............. 74
Checking the battery ....................... 75 Convenience closing feature ............ 87
Convenience opening feature .......... 86
Display message ............................ 264
Door central locking/unlocking ....... 72
Important safety notes .................... 72
KEYLESS-GO start function .............. 74
Loss ................................................. 77
Mechanical key ................................ 74
Overview ..........................................
72
P
ositions (ignition lock) ................. 134
Problem (malfunction) ..................... 77
Starting the engine ........................ 136
Smartphone
Starting the engine ........................ 136
Snow chains
Information .................................... 333
Sockets
Center console .............................. 289
General notes ................................ 289
Luggage compartment ................... 289
Rear compartment ......................... 289
Special seat belt retractor .................. 54
Specialist workshop ............................ 26
Speed, controlling
see Cruise control
Speedometer
Digital ............................................ 223
In the Instrument cluster ................. 31
Segments ...................................... 219
Selecting the display unit ............... 229
Standing lamps
Display message ............................ 247
Switching on/off ........................... 109
Start/Stop button
Removing ....................................... 135
Start/stop function
see ECO start/stop function
Starting (engine) ................................ 136
STEER CONTROL .................................. 70
Steering
Display message ............................ 263
Steering Assist and Stop&Go Pilot
(DISTRONIC PLUS)
Activating/deactivating ................. 227
Display message ............................ 258
Steering assistant STEER CON-
TROL
see STEER CONTROL
16Index

Mercedes-AMG vehicles:the ECO start/stop
function is only available in drive programs
Comfort andSlippery.
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 tempera-
ture.
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. When
you depress the accelerator pedal, the engine
starts automatically and the braking effect of
the HOLD function is deactivated.
All vehicles (except Mercedes-AMG vehi-
cles): automatic engine switch-off can take
place a maximum of four times in a row (initial
stop, then three subsequent stops).
Mercedes-AMG vehicles: the number of con-
secutive automatic engine switch-offs is unlimi- ted.
Automatic engine start
The engine starts automatically if:
Ryou switch off the ECO start/stop function by
pressing the ECO button
Rin transmission position Dor 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 switch to theSport PlusorSport drive
program (Mercedes-AMG vehicles)
Ryou activate manual gearshifting (Mercedes-
AMG vehicles)
Ryou unfasten your seat belt or open the driv-
er'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
All vehicles (except Mercedes-AMG vehi-
cles)
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.
Driving139
Driving and parking
Z

Towing a trailer
There are numerous legal requirements con-
cerning the towing of a trailer, e.g. speed restric-tions. Make sure that your car/trailer combina-
tion complies with the local regulations:
Rin your place of residence
Rin the location to which you are driving
The police and local authorities can provide reli- able information.
Observe the following when towing a trailer:
RTo gain driving experience and to become
accustomed to the new handling characteris-
tics, 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 regular
intervals that the load is firmly secured. If the
tra
iler 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 driving
without one. Avoid sudden steering move-
ments.
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 moderately 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 gra-
dients, 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 toutilize the engine's braking effect.
Avoid continuous brake application as this
may overheat the vehicle brakes and, if instal-
led, the trailer brakes.
RIf the coolant temperature increases dramat-
ically while the air-conditioning system is
switched on, switch off the air-conditioning
system.
Coolant heat can also be dissipated by open-
ing the windows and switching the ventilation blower and the interior temperature 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 com-
bination, you require additional 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.
GWARNING
Vehicles with level control:
The vehicle is lowered as soon as you discon-
nect the trailer cable. This could result in your
limbs or those of other people that are
between the vehicle body and tires or under-
216Towing a trailer
Driving an d parking

Speed rating
The speed rating is part of the tire identification.It specifies the speed range for which the tire is
approved.
GTW (Gross Trailer Weight)
The GTW is the weight of a trailer including the
weight of the load, luggage, accessories etc. on
the trailer.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight of
the vehicle including fuel, tools, the spare wheel,
accessories installed, occupants, luggage and
the drawbar noseweight, if applicable. The gross
vehicle weight must not exceed the gross vehi-
cle weight rating GVWR as specified on the vehi- cle identification plate on the B-pillar on the
driver's side.
GVWR (Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross
weight of a fully loaded vehicle (the weight of the
vehicle including all accessories, occupants,
fuel, luggage and the drawbar noseweight, if
applicable). The gross vehicle weight rating is
specified on the vehicle identification plate on
the B-pillar on the driver's side.
Maximum loaded vehicle weight
The maximum weight is the sum of:
Rthe curb weight of the vehicle
Rthe weight of the accessories
Rthe load limit
Rthe weight of the factory installed optional
equipment
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa corre-
sponds to 1 psi. Another unit for tire pressure is
bar. 100 kilopascals (kPa) are the equivalent of
1 bar.
Load index
In addition to the load-bearing index, the load
index may also be imprinted on the sidewall of
the tire. This specifies the load-bearing capacity
more precisely.
Curb weight
The weight of a vehicle with standard equipment
including the maximum capacity of fuel, oil and
coolant. It also includes the air-conditioning sys- tem and optional equipment if these are instal-
led in the vehicle, but does not include passen-
gers or luggage.
Maximum load rating
The maximum tire load is the maximum permis-
sible weight in kilograms or lbs for which a tire is approved.
Maximum permissible tire pressure
Maximum permissible tire pressure for one tire.
Maximum load on one tire
Maximum load on one tire. This is calculated by
dividing the maximum axle load of one axle by
two.
PSI (pounds per square inch)
A standard unit of measure for tire pressure.
Aspect ratio
Relationship between tire height and tire widt h
in percent.
Tire pressure
This is pressure inside the tire applying an out-
ward force to each square inch of the tire's sur-
face. The tire pressure is specified in pounds per
square inch (psi), in kilopascal (kPa) or in bar.
The tire pressure should only be corrected when the tires are cold.
Cold tire pressure
The tires are cold:
Rif the vehicle has been parked with the tires
out of direct sunlight for at least three hours
and
Rif the vehicle has not been driven further than
1 mile (1.6 km)
Tread
The part of the tire that comes into contact with
the road.
Bead
The tire bead ensures that the tire sits securely
on the wheel. There are several steel wires in the
bead to prevent the tire from coming loose from
the wheel rim.
350All about wheels and tires
Wheels and tires