
Trailer
Folding the ball coupling in/out ..... 210
Trailer coupling
see Towing a trailer
Trailer towing
7-pin connector ............................. 212
Blind Spot Assist ............................ 202
Cleaning the trailer tow hitch ......... 301
Coupling up a traile r...................... 211
Decoupling a trailer ....................... 211
Driving tips .................................... 209
Folding in the ball coupling ............ 211
Folding out the ball coupling .......... 210
Important safety notes .................. 208
Lights display message .................. 236
Mounting dimensions .................... 343
Parktronic ...................................... 181
Power supply ................................. 211
Trailer load s................................... 344
Transmission
see Automatic transmission
see Manual transmission
Transmission position display ......... 147
Transmission position display
(DIRECT SELECT lever) ...................... 147
Transporting the vehicle .................. 317
Trim pieces (cleaning instruc-
tions) .................................................. 302
Trip computer (on-board com-
puter) .................................................. 216
Trip meter
Calling up ....................................... 215
Resetting (on-board computer) ...... 216
Turn signals
Switching on/of f........................... 116
TV
Operating (on-board computer) ..... 219
see Separate operating instructions
Two-way radio
Frequencies ................................... 335
Installation ..................................... 335
Transmission output (maximum) .... 335
Type identification plate
see Vehicle identification plate
Tyre changing tool kit ....................... 305
Tyre inflation compressor
see TIREFIT kit Tyre pressure
Calling up (on-board computer) ..... 326
Display message ............................ 246
Not reached (TIREFIT) .................... 309
Reached (TIREFIT) .......................... 309
Recommended ............................... 324
Tyre pressure loss warning
General notes ................................ 325
Important safety notes .................. 326
Restarting ...................................... 326
Tyre pressure monitor
Checking the tyre pressure elec-
tronically ........................................ 327
Function/note s............................. 326
General notes ................................ 326
Important safety notes .................. 327
Restarting ...................................... 328
Warning lamp ................................. 262
Warning message .......................... 328
Tyres
Changing a whee l.......................... 328
Checking ........................................ 321
Direction of rotation ...................... 329
Display message ............................ 246
Important safety notes .................. 321
Information on driving .................... 321
MOExtended tyre s......................... 323
Replacing ....................................... 329
Service life ..................................... 322
Storing ........................................... 329
Tyre size (data ).............................. 333
Tyre tread ...................................... 322
Wheel and tyre combinations ........ 333
see Flat tyre U
Unlocking Emergency unlocking ....................... 82
From inside the vehicle (central
unlocking button) ............................. 81
USB devices
Connecting to the Media Inter-
face ............................................... 271 V
Vanity mirror (in sun visor) .............. 27920
Index

Cockpit
Function Page
:
Steering wheel gearshift pad-
dles 151
;
Combination switch 116
=
Instrument cluster 31
?
Horn
A
DIRECT SELECT lever 147
B
PARKTRONIC warning dis-
play
179
C
Overhead control panel 35
D
Climate control systems 123
E
Ignition lock 139
Start/Stop button 139 Function Page
F
To adjust the steering wheel
manually
106
G
To adjust the steering wheel
electrically
106
Steering wheel heating 107
H
Cruise control lever 163
I
Parking brake 159
J
Diagnostics connection 26
K
To open the bonnet 290
L
To release the parking brake 159
M
Light switch 114Cockpit
29At a glance

Function Page
:
Overhead control panel 35
;
PARKTRONIC warning dis-
play
179
=
Combination switch 116
?
Instrument cluster 31
A
Horn
B
DIRECT SELECT lever 147
C
Steering wheel gearshift pad-
dles 151
D
Light switch 114
E
To release the parking brake 159
F
To open the bonnet 290 Function Page
G
Diagnostics connection 26
H
Ignition lock 139
Start/Stop button 139
I
To adjust the steering wheel
manually
106
J
To adjust the steering wheel
electrically
106
steering wheel heating 107
K
Cruise control lever 163
L
Parking brake 159
M
Climate control systems 12330
CockpitAt a glance

Instrument cluster
i
Instrument cluster with speedometer
(km/h) Function Page
:
Fuel gauge (left)
Coolant temperature (right) 213
Warning and indicator lamps:
÷
ESP® 256
·
Distance warning 261
å
ESP®
OFF 256
#
Turn signal, left 116
?
Coolant 259
K
Main-beam headlamps 116
L
Dipped-beam head-
lamps 115
T
Side lamps 115
R
Rear foglamp 115
8
Reserve fuel 259
Fuel filler flap location indi-
cator: the fuel filler cap is on
the right-hand side. Function Page
;
Speedometer with segments 213
=
Multifunction display 215
?
Rev counter 213
Warning and indicator lamps:
J
Brakes (red) 255
!
Turn signal, right 116
J
Only for certain vehi-
cles: brakes (yellow) 255
!
ABS 256
6
Restraint system 38
;
Engine diagnostics 259
h
Tyre pressure monitor 262
ü
Seat belts 254
%
Diesel engine: preglow 141
Information on displaying the outside tempera-
ture in the multifunction display can be found
under "Outside temperature display"
(Y
page 213).
The lighting in the instrument cluster, in the dis- plays and the controls in the vehicle interior can
be adjusted via the on-board computer
(Y page 223). Instrument cluster
31At a glance

Restraint system warning lamp
The functions of the restraint system are
checked after the ignition is switched on and at
regular intervals while the engine is running.
Therefore, malfunctions can be detected in
good time.
The 6 restraint system warning lamp in the
instrument cluster lights up when the ignition is switched on. It goes out no later than a few sec-
onds after the vehicle is started. The compo-
nents of the restraint system are in operational
readiness.
A malfunction has occurred if the 6restraint
system warning lamp:
R does not light up after the ignition is switched
on
R does not go out after a few seconds with the
engine running
R lights up again while the engine is running G
WARNING
If the restraint system is malfunctioning,
restraint system components may be trig-
gered unintentionally or might not be trig-
gered at all in the event of an accident with a high rate of vehicle deceleration. This can
effect belt tensioners or airbags, for example. There is an increased risk of serious or even
fatal injuries.
Have the restraint system checked and
repaired immediately at a qualified specialist
workshop. PASSENGER AIR BAG OFF indicator
lamp PASSENGER AIR BAG OFF indicator lamp
:is
part of the automatic child seat recognition on
the front-passenger seat.
A permanently lit PASSENGER AIR BAG OFF
indicator lamp informs you that the front-
passenger front airbag is disabled.
Depending on the person in the front-passenger seat, the front-passenger front airbag must
either be disabled or enabled; see the following
points. You must make sure of this both before
and during a journey.
R Children in a child restraint system:
whether the front-passenger front airbag is
enabled or disabled depends on the installed
child restraint system, and the age and size of the child. Therefore, it is imperative to
observe the notes on "Children in the vehicle"
(Y page 49). There you will also find infor-
mation on rearward or forward-facing child
restraint systems on the front-passenger
seat.
R All other persons: the PASSENGER AIR BAG
OFF indicator lamp must be off. Be sure to
observe the notes on "Seat belts"
(Y page 38) and "Airbags" (Y page 42).
There you can also find information on the
correct seat position.
Observe the information on automatic child seat recognition in the front-passenger seat
(Y page 51). Seat belts
Introduction A correctly worn seat belt is the most effective
means of restraining the movement of vehicle
occupants in the event of a collision or if the
vehicle overturns. This reduces the risk of vehi- cle occupants coming into contact with parts of
the vehicle interior or being ejected from it. The
seat belt also helps to keep the vehicle occu-
pants in the best position in relation to the air-
bag being deployed.
The seat belt system consists of:
R seat belts
R belt tensioners for the front seat belts and the
outer seat belts in the rear
R belt force limiters for the front seat belts and
the outer seat belts in the rear 38
Occupant safetySafety

hold on to the seat belt tightly while it is adjust-
ing.
You can switch the seat-belt adjustment on and
off in the on-board computer (Y page 227).
Belt warning for the driver and front
passenger The
7 seat belt warning lamp in the instru-
ment cluster is a reminder that all vehicle occu-
pants must wear their seat belts. It may light up
continuously or flash. In addition, a warning tone may sound.
The 7 seat belt warning lamp goes out and
the warning tone ceases when the driver and the
front passenger have fastened their seat belts.
i More information on the
7seat belt
warning lamp can be found under "Warning
and indicator lamps in the instrument cluster,
seat belt" (Y page 254).
Rear seat belt status indicator The seat belt on the left rear seat, when viewed
in the direction of travel, is not fastened. (Exam- ple)
The rear seat belt status indicator is only avail-
able for certain countries.
The rear seat belt status indicator shows which rear seat belt is not fastened.
Hiding the rear seat belt status indicator imme-
diately (Y page 229). Airbags
Introduction The installation location of an airbag is identified
by the AIRBAG symbol.
An airbag supplements a correctly worn seat
belt. It is not a replacement for the seat belt. The airbag offers additional protection in corre-
sponding accident situations. Not all airbags are deployed in an accident. The
different airbag systems work independently of
each other (Y page 45).
However, no system available today can com-
pletely eliminate injuries and fatalities.
It is also not possible to completely rule out a
risk of injury caused by an airbag due to the
speed at which the airbag must be deployed.
Important safety notes G
WARNING
If you deviate from the correct seat position,
the airbag cannot perform its intended pro-
tective function and can even cause addi-
tional injuries when deployed. There is an
increased risk of serious or even fatal injuries.
In order to avoid such risks, always ensure
that all vehicle occupants:
R fasten their seatbelts correctly, including
pregnant women
R are seated correctly and maintain the fur-
thest possible distance from the airbags
R observe the following notes
Always ensure that there are no objects loca-
ted between the airbag and the vehicle occu-
pant.
R Adjust the seats properly before beginning
your journey. Always make sure that the seat
is in an almost upright position. The centre of
the head restraint must support the head at
about eye level.
R Move the driver's and front-passenger seats
as far back as possible. The driver's seat posi-
tion must allow the vehicle to be driven safely.
R Only hold the steering wheel on the outside.
This allows the airbag to be fully deployed.
R Always lean against the backrest while driv-
ing. Do not lean forwards or lean against the
door or side window. You may otherwise be in
the deployment area of the airbags.
R Always keep your feet in the footwell in front
of the seat. Do not put your feet on the dash-
board, for example. Your feet may otherwise
be in the deployment area of the airbag.
R Always secure persons less than 1.50 mtall in
suitable restraint systems. Up to this height,
the seat belt cannot be worn correctly. 42
Occupant safetySafety

Pelvisbags
:deploy next to and below the
outer seat cushions.
When activated, the pelvisbag enhances the
level of protection of the vehicle occupants on
the side of the vehicle on which the impact
occurs.
The pelvisbag is deployed on the side of the
impact.
i Pelvisbags are only available in certain
countries. Roll bars
G
DANGER
If the roll bar has developed a fault, it may not function, e.g. in the event of an accident. The
roll bars may then not protect the vehicle
occupants as intended. This poses an
increased risk of injury or even fatal injury.
Have roll bars checked immediately at a quali-
fied specialist workshop. G
WARNING
Risk of injury if the roll bar is triggered.
Ensure that the movement area of the rear
head restraints is kept clear.
The roll bars are under the rear head restraints. They extend if systems detect that the vehicle isin danger of overturning. Thus the rear head
restraints also extend automatically.
Once the roll bars are extended, you can no lon-
ger lower the rear head restraints. An open soft
top can no longer be closed. In this case, visit
the nearest qualified specialist workshop. Deployment of belt tensioners and air-
bags
Important safety notes G
WARNING
After the airbag deploys, the airbag parts are
hot. There is a risk of injury.
Do not touch the airbag parts. Have a
deployed airbag replaced at a qualified spe-
cialist workshop as soon as possible. G
WARNING
Pyrotechnic seat belt tensioners that have
been deployed are no longer operational and
are unable to perform their intended protec-
tive function. This poses an increased risk of
injury or even fatal injury.
Therefore, have pyrotechnic belt tensioners
which have been triggered immediately
replaced at a qualified specialist workshop.
Mercedes-Benz recommends that you have the
vehicle towed to a qualified specialist workshop
after an accident. Take this into account, par-
ticularly if a seat belt tensioner was triggered or
an airbag was deployed.
An electric motor is used by PRE-SAFE ®
to trig-
ger the tightening of the seat belt in hazardous
situations. This procedure is reversible.
If the belt tensioners are triggered or an airbag is deployed, you will hear a bang, and a small
amount of powder may also be released. The
6 restraint system warning lamp lights up.
Only in rare cases will the bang affect your hear-
ing. In general, the powder released is not haz-
ardous to health but may cause short-term
breathing difficulties to persons suffering from
asthma or other pulmonary conditions. Provided
it is safe to do so, you should leave the vehicle
immediately or open the window in order to pre- vent breathing difficulties. Occupant safety
45Safety Z

Important safety notes
!
Make sure that there are no objects in the
footwell or behind the seats. There is a risk
that the seats and/or the objects could be
damaged when PRE-SAFE ®
is activated.
Although your vehicle is equipped with PRE-
SAFE ®
, the possibility of injury in the event of an
accident cannot be ruled out. Always adapt your
driving style to suit the prevailing road and
weather conditions and maintain a safe distance from the vehicle in front. Drive carefully.
Function PRE-SAFE
®
intervenes:
R in emergency braking situations, e.g. when
BAS is activated
R in critical driving situations, e.g. when physi-
cal limits are exceeded and the vehicle under- steers or oversteers severely
R on vehicles with the Driving Assistance pack-
age: if BAS PLUS intervenes powerfully or the
radar sensor system detects an imminent
danger of collision in certain situations
PRE-SAFE ®
takes the following measures
depending on the hazardous situation detected:
R the front seat belts are pre-tensioned
R if the vehicle skids, the front side windows are
closed
R vehicles with the memory function: the front-
passenger seat is adjusted if it is in an unfav-
ourable position
R vehicles with a multicontour seat: the air pres-
sure in the side bolsters of the backrest is
increased
If the hazardous situation passes without result-
ing in an accident, PRE-SAFE ®
slackens the belt
pre-tensioning. On vehicles with multicontour
seats, the air pressure in the side bolsters is
reduced again. All settings made by PRE-SAFE ®
can then be reversed.
If the seat belt pre-tensioning is not reduced:
X Move the seat backrest or seat back slightly
when the vehicle is stationary.
Seat belt pre-tensioning is reduced and the
locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. Informa-
tion about the convenience function can be
found under "Belt adjustment" (Y page 41). PRE-SAFE
®
PLUS (anticipatory occu-
pant protection PLUS)
Introduction PRE-SAFE
®
PLUS is only available in vehicles
with the Driving Assistance package.
Using the radar sensor system, PRE-SAFE ®
PLUS is able to detect that a head-on or rear-end collision is imminent. In certain hazardous sit-
uations, PRE-SAFE ®
PLUS takes pre-emptive
measures to protect the vehicle occupants.
Important safety notes The intervention of PRE-SAFE
®
PLUS cannot
prevent an imminent collision.
The driver is not warned before the intervention
of PRE-SAFE ®
PLUS.
PRE-SAFE ®
PLUS does not intervene:
R if the vehicle is reversing
R when the vehicle is towing a trailer and there
is a risk of a rear-end collision
When driving, or when parking or exiting a park- ing space with assistance from Active Parking
Assist, PRE-SAFE ®
PLUS will not apply the
brakes.
Function PRE-SAFE
®
PLUS intervenes in certain situa-
tions if the radar sensor system detects an
imminent head-on or rear-end collision.
PRE-SAFE ®
PLUS takes the following measures
depending on the hazardous situation detected:
R if the radar sensor system detects that a
head-on collision is imminent, the seat belts
are pre-tensioned
R if the radar sensor system detects that a rear-
end collision is imminent:
- the rear hazard warning lamps are activa-
ted and flash at a higher frequency
- the brake pressure is increased if the driver
applies the brakes when the vehicle is sta-
tionary
- the seat belts are pre-tensioned 48
Occupant safetySafety