
Towing eye......................................... 342
Traffic Sign Assist
Activating ....................................... 218
Display message ............................ 276
Function/notes ............................. 217
Important safety notes .................. 217
Instrument cluster display ............. 218
Switching on/off ........................... 245
Transfer case ..................................... 167
Transmission
see Automatic transmission
Transporting the vehicle .................. 356
Trim pieces (cleaning instruc-
tions) .................................................. 338
Trip computer (on-board com-
puter) .................................................. 236
Trip odometer
Calling up ....................................... 235
Resetting (on-board computer) ...... 237
Trunk
Emergency release .......................... 96
Important safety notes .................... 92
Locking separately ........................... 96
Opening/closing (automatically
from inside) ...................................... 95
Opening/closing (automatically
from outside) ................................... 92
Opening/closing (from outside,
HANDS-FREE ACCESS) .................... 94
Power closing .................................. 90
Trunk lid
Display message ............................ 282
Obstacle recognition ........................ 92
Opening dimensions ...................... 406
Opening/closing .............................. 92
Trunk load (maximum) ...................... 406
Turn signals
Display message ............................ 265
Switching on/off ........................... 126
Two-way radio
Frequencies ................................... 398
Installation ..................................... 398
Transmission output (maximum) .... 398
Windshield (infrared reflective) ...... 321
Type identification plate
see Vehicle identification plateU
UnlockingEmergency unlocking ....................... 90
From inside the vehicle (central
unlocking button) ............................. 89
Upshift indicator (on-board com-
puter, Mercedes-AMG vehicles) ....... 249
V
Vanity mirror (in the sun visor)........ 305
Vehicle
Correct use ...................................... 27
Data acquisition ............................... 28
Display message ............................ 281
Electronics ..................................... 398
Equipment ....................................... 23
Individual settings .......................... 244
Limited Warranty ............................. 27
Loading .......................................... 372
Locking (in an emergency) ............... 91
Locking (SmartKey) .......................... 83
Lowering ........................................ 388
Maintenance .................................... 24
Operating safety .............................. 25
Parking .......................................... 170
Parking for a long period ................ 173
Pulling away ................................... 154
Raising ........................................... 385
Reporting problems ......................... 27
Securing from rolling away ............ 384
Towing away .................................. 354
Transporting .................................. 356
Unlocking (in an emergency) ........... 90
Unlocking (SmartKey) ...................... 83
Vehicle data ................................... 406
Vehicle dimensions ........................... 406
Vehicle emergency locking ................ 91
Vehicle identification number
see VIN
Vehicle identification plate .............. 399
Vehicle level
Active Body Control ABC ............... 194
AIRMATIC ...................................... 197
Display message ............................ 272
Vehicle tool kit .................................. 342
20Index

Cockpit
FunctionPage
:Steering wheel paddle
shifters
163
;Combination switch126
=Horn
?Instrument cluster33
ADIRECT SELECT lever159
BOverhead control panel39
CControl panel for:
ÜLowering the rear
seat head restraints
110
u Extending/retracting
the rear roller sunblind
306
Moving the seat-belt
extender forwards
48
PASSENGER AIR BAG indi-
cator lamp
45
Setting the brightness of
the instrument cluster light-
ing and the COMAND dis-
play
DClimate control systems136
FunctionPage
EIgnition lock151
Start/Stop button151
FAdjusts the steering wheel114
Steering wheel heating115
GCruise control lever180
HElectric parking brake172
IDiagnostics connection26
JOpens the hood324
KLight switch124
LControl panel for:
Activating Steering Assist
and Stop&Go Pilot
190
Switching on Active Lane
Keeping Assist
225
Deactivating PARKTRONIC199
Switching on the 360° cam-
era
211
Activating Night View
Assist
219
Switching on the head-up
display
233
32Cockpit
At a glance

Door controlpanel
FunctionPage
:s Seat ventilation113
;c Seat heatin g111
=w Adjust sth efront-
passenger seat from th e
driver's seat
10 8
?r 45=
Stores settings for the seat,
exterior mirrors and steer-
ing wheel
120
AAdjusts the seats electri-
cally
108
B7Zª\
Adjusts and folds the exte-
rior mirrors in/out electri-
cally
118
FunctionPage
CW Opens/closes the
right side window
97
DW Opens/closes the
rear right side window
97
Ep Opens/closes the
trunk lid
95
FW Opens/closes the
rear left side window
97
GOpens the door89
H%&Unlocks/locks
the vehicle
89
IW Opens/closes the left
side window
97
40Door control panel
At a glance

and size of the child. Therefore, be sure to
observe the notes on the "Occupant Clas-
sification System (OCS)" (
Ypage 53) and
on "Children in the vehicle" (
Ypage 62).
There you will also find instructions on rear-
ward and forward-facing child restraint sys- tems on the front-passenger seat.
RAll other persons: depending on the clas-
sification of the person in the front-
passenger seat, the front-passenger front
air bag is enabled or deactivated
(
Ypage 53). Be sure to observe the notes
on "Seat belts“ (
Ypage 46) and "Air bags"
(
Ypage 50). There you can also find infor-
mation on the correct seat position.
Seat belts
Introduction
Seat belts are the most effective means of
restricting the movement of vehicle occu-
pants in the event of an accident or the vehi-
cle rolling over. This reduces the risk of vehi-
cle occupants coming into contact with parts
of the vehicle interior or being ejected from
the vehicle. Furthermore, the seat belt helps
to keep the vehicle occupant in the best posi-
tion in relation to the air bag.
The seat belt system comprises:
RSeat belts
REmergency Tensioning Devices and seat
belt force limiters
If the seat belt is pulled by the seat belt
extender quickly or with a jerky movement,
the belt retractor locks. The belt strap cannot
be extracted any further.
The Emergency Tensioning Device tightens
the seat belt in an accident, pulling the belt
close against the body. However it does not
pull the vehicle occupant back in the direction
of the backrest.
The Emergency Tensioning Device does not
correct an incorrect seat position or the rout-
ing of an incorrectly fastened seat belt. When triggered, a seat belt force limiter helps
to reduce the force exerted by the seat belt on
the vehicle occupant.
The seat belt force limiters for the front seats
are synchronized with the front air bags,
which absorb part of the dec elerat
ion force.
This can reduce the force exerted on the vehi-
cle occupants during an accident.
!If the front-passenger seat is unoccupied,
do not insert the belt tongue into the buckle
of the front-passenger seat. This may oth-
erwise lead to the triggering of the Emer-
gency Tensioning Device in the event of an
accident, which will then need to be
replaced.
Important safety notes
The use of seat belts and child restraint sys-
tems is required by law in:
Rall 50 states
Rthe U.S. territories
Rthe District of Columbia
Rall Canadian provinces
Even where this is not required by law, all
vehicle occupants should correctly fasten
their seat belts before starting the journey.
GWARNING
If the seat belt is incorrectly fastened, it can-
not protect as intended. Furthermore, an
incorrectly fastened seat belt can cause addi-
tional injury, for example, inan accident, dur-
ing braking or when abruptly changing direc-
tion. This poses an increased risk of injury or
even fatal injury.
Make sure that all vehicle occupants are
seated properly wit h a correctly fastened seat
belt .
GWARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or inthe event of an accident, you could
slide underneath the seat belt and sustain
46Occupant safety
Safety

Only then can the forces which occur be
distributed over the area of the belt.
Rthe shoulder section of the belt is always
routed across the center of your shoulder.
The shoulder section of the belt must not
come into contact with your neck or be
routed under your arm.
Rthe lap belt passes tightly and as low down
as possible across your lap.
The lap belt must always be routed across
your hip joints and not across your abdo-
men. This applies particularly to pregnant
women. If necessary, push the lap belt
down to your hip joint and pull it tight using
the shoulder section of the belt.
Rthe seat belt is not routed across sharp,
pointed or fragile objects.
If you have such items located on or in yourclothing, e.g. pens, keys or eyeglasses,
store these in a suitable place.
Ronly one person is using a seat belt at a
time.
Infants and children must never travel sit-
ting on the lap of a vehicle occupant. In the
event of an accident, they could be crushed
between the vehicle occupant and seat
belt.
Robjects are never secured with a seat belt if
the seat belt is also being used by one of the
vehicle's occupants.
Also ensure that there are never objects
between a person and the seat, e.g. cush-
ions.
Seat belts are only intended to secure and
restrain vehicle occupants. Always observe
the "Loading guidelines" for securing objects,
luggage or loads (
Ypage 300).
Fastening seat belts
Observe the safety notes on the seat belt
(
Ypage 46) and the notes on correct use of
seat belts (
Ypage 47).
GWARNING
If the seat-belt extender is extended during
the journey, the seat belt is not fitted properly
on the body. The seat belt can then no longer
perform its intended protective function. This
poses an increased risk of injury or even fatal
injury.
Always make sure that the seat-belt extender is retracted during a journey.
Seat-belt extender
The seat-belt extender for the driver and front
passenger helps you fasten your seat belt.
Seat-belt extender =is extended when the
respective door is closed and the SmartKey is
turned to position 1or 2in the ignition lock.
You can also extend seat-belt extender =
with seat-belt extender button ?.
48Occupant safety
Safety

XPress seat-belt extender button?.
Seat-belt extender =extends.
Seat-belt extender =is retracted again if:
Rthe belt tongue is engaged in the seat belt
buckle.
Rthe belt tongue is not engaged in the seat
belt buckle within 60 seconds.
In this case, you can extend seat-belt
extender =again. Press seat-belt
extender button ?again.
Rthe respective door is opened.
Rthe SmartKey is turned to position 0in the
ignition lock.
Ryou release the seat backrest and fold it
forwards.
Rthe front-passenger seat is unoccupied
after approximately five seconds.
If you press seat-belt extender button ?
after this, seat-belt extender =will not
extend.
Basic illustration
XAdjust the seat (Ypage 106).
The seat backrest must be in an almost
vertical position.
XPull the seat belt smoothly out of seat-belt
extender =and engage belt tongue ;
into belt buckle :.
The seat belt on the driver’s seat and the
front-passenger seat may be tightened automatically, see "Belt adjustment"
(
Ypage 50).
XIf necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
All seat belts except the driver's seat belt are
equipped with a special seat belt retractor to
securely fasten child restraint systems in the
vehicle. Further information can be found
under "Special seat belt retractor"
(
Ypage 63).
Releasing seat belts
!Make sure that the seat belt is fully rolled
up. Otherwise, the seat belt or belt tongue
will be trapped in the door or in the seat
mechanism. This could damage the door,
the door trim panel and the seat belt. Dam-
aged seat belts can no longer fulfill their
protective function and must be replaced.
Visit a qualified specialist workshop.
Basic illustration
XPress release button :, hold belt
tongue ;firmly and guide it back towards
seat-belt extender =.
Occupant safety49
Safety
Z

Prerequisite
To be classified correctly, the front passenger
must sit:
Rwith the seat belt fastened correctly
Rin an almost upright position with their
back against the seat backrest
Rwith their feet resting on the floor, if possi-
ble
If the front passenger does not observe these
conditions, OCS may produce a false classi-
fication, e.g. because the front passenger:
Rtransfers their weight by supporting them-
selves on a vehicle armrest
Rsits in such a way that their weight is raised from the seat cushion
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. cushions. Fully retract the seat
cushion length. 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 lie as flat as possible against the
backrest of the front-passenger seat.
The child restraint system must not touch the
roof or be subjected to a load by the head
restraint. Adjust the angle of the seat back-
rest and the head restraint position accord-
ingly.
Only then can OCS be guaranteed to function
correctly. Always observe the child restraint
system manufacturer's installation instruc-
tions.
Occupant Classification System opera-
tion (OCS)
:PASSENGER AIR BAG OFF indicator lamp
;PASSENGER AIR BAG ON indicator lamp
The indicator lamps inform you whether the
front-passenger front air bag is deactivated or
enabled.
XPress the Start/Stop button once or twice,
or turn the SmartKey to position 1or 2in
the ignition lock.
The system carries out self-diagnostics.
The PASSENGER AIR BAG OFF and
PASSENGER AIR BAG ON indicator lamps
must light up simultaneously for approx-
imately six seconds.
The indicator lamps display the status of the
front-passenger front air bag.
RPASSENGER AIR BAG ON lights up: the
front-passenger front air bag is enabled. If,
in the event of an accident, all deployment
criteria are met, the front-passenger front
air bag is deployed.
RPASSENGER AIR BAG OFF lights up: the
front-passenger front air bag is deactiva-
ted. It will then not be deployed in the event
of an accident.
If the status of the front-passenger front air
bag changes while the vehicle is in motion, an
air bag display message appears in the instru-
ment cluster (
Ypage 264). When the front-
passenger seat is occupied, always pay atten-
tion to the PASSENGER AIR BAG ON and
PASSENGER AIR BAG OFF indicator lamps. Be
aware of the status of the front-passenger
54Occupant safety
Safety

How the air bag system works is deter-
mined by the severity of the accident detec-
ted, especially the vehicle deceleration or
acceleration and the apparent type of acci-
dent:
Rfrontal collision
Rside impact
Rrollover
PRE-SAFE®(anticipatory occupant
protection system)
Introduction
In certain hazardous situations, PRE-SAFE®
takes pre-emptive measures to protect the
vehicle occupants.
Important safety notes
!Make sure that there are no objects in the
footwell or behind the seats. There is a dan-
ger that the seats and/or objects could be
damaged when PRE-SAFE
®is activated.
Despite your vehicle being equipped with the
PRE-SAFE
®system, the possibility of per-
sonal injuries occurring as a result of an acci-
dent cannot be eliminated. Always adapt your driving style to suit the prevailing road and
weather conditions and maintain a safe dis-
tance from the vehicle in front. Drive care-
fully.
Function
PRE-SAFE®intervenes:
Rin emergency braking situations, e.g. when
BAS is activated
Rin critical driving situations, e.g. when phys-
ical limits are exceeded and the vehicle
understeers or oversteers severely
Rvehicles with the Driving Assistance pack-
age: when a driver assistance system inter-
venes powerfully or the radar sensor sys-
tem detects an imminent danger of colli-
sion in certain situations PRE-SAFE
®takes the following measures
depending on the hazardous situation detec-
ted:
Rthe front seat belts are pre-tensioned.
Rif the vehicle skids, the side windows are
closed so that only a small gap remains.
Rif the vehicle skids, the panorama roof with
power tilt/sliding panel and the side win-
dows are closed so that only a small gap
remains.
Rthe front-passenger seat is adjusted if it is
in an unfavorable position.
Rvehicles with a multicontour seat: the air
pressure in the side bolsters of the seat
backrest is increased.
If the hazardous situation passes without
resulting in an accident, PRE-SAFE
®slackens
the belt pre-tensioning. On vehicles with mul-
ticontour 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:
XMove the seat backrest or seat back
slightly when the vehicle is stationary.
The seat belt pre-tensioning is reduced and the locking mechanism is re
leased.
The seat-belt adjustment is an integral part of
the PRE-SAFE
®convenience function. Infor-
mation about the convenience function can
be found under "Belt adjustment"
(
Ypage 50).
PRE-SAFE®PLUS (anticipatory occu-
pant protection system 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 hazard-
ous situations, PRE-SAFE
®PLUS takes pre-
Occupant safety61
Safety
Z