
TelephoneAccepting a call (multifunction
steering wheel) .............................. 213
Authorizing a mobile phone (con-
necting) ......................................... 270
Connecting a mobile phone (gen-
eral information) ............................ 270
Display message ............................ 249
Introduction ................................... 213
Menu (on-board computer) ............ 213
Number from the phone book ........ 213
Redialing ........................................ 214
Rejecting/ending a call ................. 213
see also Digital Operator's Man-
ual .................................................. 263
Switching between mobile
phones ........................................... 271
see Mobile phone
Temperature
Coolant (display in the instrument
cluster) .......................................... 204
Engine oil (on-board computer,
Mercedes-AMG vehicles) ............... 219
Outside temperature ...................... 204
Setting (climate control) ................ 121
Transmission oil (on-board com-
puter, Mercedes-AMG vehicles) ..... 219
Timing (RACETIMER) ......................... 220
Tire pressure
Calling up (on-board computer) ..... 337
Checking manually ........................ 336
Display message ............................ 245
Maximum ....................................... 336
Not reached (TIREFIT) .................... 318
Notes ............................................. 335
Reached (TIREFIT) .......................... 318
Recommended ............................... 333
Using the TIREFIT kit ...................... 317
Tire pressure loss warning system
General notes ................................ 336
Important safety notes .................. 336
Restarting ...................................... 337
Tire pressure monitor
Checking the tire pressure elec-
tronically ........................................ 339
Function/notes ............................. 337
General notes ................................ 337
Important safety notes .................. 338 Radio type approval for the tire
pressure monitor ........................... 340
Restarting
...................................... 339
W
arning lamp ................................. 261
Warning message .......................... 339
Tire pressure sensors
Display message ............................ 246
Tire-change tool kit ........................... 314
TIREFIT kit
Important safety notes .................. 316
Storage location ............................ 314
Tire pressure not reached .............. 318
Tire pressure reached .................... 318
Using ............................................. 317
Tires
Aspect ratio (definition) ................. 349
Average weight of the vehicle
occupants (definition) .................... 348
Bar (definition) ............................... 348
Changing a wheel .......................... 350
Characteristics .............................. 348
Checking ........................................ 330
Curb weight (definition) ................. 349
Definition of terms ......................... 348
Direction of rotation ...................... 350
Display message ............................ 245
Distribution of the vehicle occu-
pants (definition) ............................ 350
DOT (Department of Transporta-
tion) (definition) ............................. 348
DOT, Tire Identification Number
(TIN) ............................................... 347
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 348
GVW (Gross Vehicle Weight) (def-
inition) ........................................... 349
GVWR (Gross Vehicle Weight Rat-
ing) (definition) .............................. 349
Important safety notes .................. 330
Increased vehicle weight due to
optional equipment (definition) ...... 348
Information on driving .................... 330
Kilopascal (kPa) (definition) ........... 349
Labeling (overview) ........................ 345
Load bearing index (definition) ...... 350
Load index ..................................... 347
Load index (definition) ................... 349
Index21

Maximum load on a tire (defini-
tion) ............................................... 349
Maximum loaded vehicle weight
(definition) .....................................349
Maximum permissible tire pres-
sure (definition) .............................3 49
Maximum tire load ......................... 347
Maximum tire load (definition) ....... 349
MOExtended tires .......................... 332
Optional equipment weight (defi-
nition) ............................................ 350
PSI (pounds per square inch) (def-
inition) ...........................................3 49
Replacing ....................................... 350
Service life ..................................... 331
Sidewall (definition) ....................... 349
Snow chains .................................. 332
Speed rating (definition) ................ 349
Storing ...........................................3 51
Structure and characteristics
(definition) ..................................... 348
Summer tires in winter .................. 332
Temperature .................................. 344
TIN (Tire Identification Number)
(definition) ..................................... 350
Tire bead (definition) ......................3 49
Tire pressure (definition) ................ 349
Tire pressures (recommended) ...... 348
Tire size (data) ............................... 354
Tire size designation, load-bearing
capacity, speed rating .................... 345
Tire tread ....................................... 331
Tire tread (definition) ..................... 349
Total load limit (definition) ............. 350
Traction ......................................... 344
Traction (definition) ....................... 350
Tread wear ..................................... 344
Uniform Tire Quality Grading
Standards ...................................... 343
Uniform Tire Quality Grading
Standards (definition) .................... 348
Wear indicator (definition) ............. 350
Wheel and tire combination ........... 354
Wheel rim (defi nition) .................... 348
se
e Flat tire
Top Tether ............................................ 60
Topping up
DEF ................................................ 146 Touchpad
Changing the station/music
track .............................................. 266
Character suggestions ................... 265
Deleting characters ....................... 265
Entering a space ............................ 265
Entering characters ....................... 265
Gesture control .............................. 265
Handwriting recognition ................ 265
Operating the touchpad ................. 265
Overview ........................................ 265
Quick access for Audio .................. 266
Switching ....................................... 265
Switching input line ....................... 265
Tow-starting
Emergency engine starting ............ 327
Important safety notes .................. 324
Towing a trailer
Axle load, permissible .................... 365
Cleaning the trailer tow hitch ......... 310
Coupling up a trailer ...................... 199
Decoupling a trailer ....................... 201
Driving tips .................................... 198
ESP
®(Electronic Stability Pro-
gram) ............................................... 72
Important safety notes .................. 197
Installing the ball coupling ............. 199
Lights display message .................. 234
Power supply ................................. 201
Pulling away with a trailer .............. 130
Removing the ball coupling ............ 201
Trailer loads ................................... 365
Towing away
Important safety guidelines ........... 324
Installing the towing eye ................ 325
Notes for 4MATIC vehicles ............ 327
Removing the towing eye ............... 326
Transporting the vehicle ................ 326
With both axles on the ground ....... 326
Towing eye ......................................... 314
Traffic reports
see also Digital Operator's Man-
ual .................................................. 263
Traffic Sign Assist
Display message ............................ 242
Function/notes ............................. 187
Important safety notes .................. 188
Instrument cluster display ............. 188
22Index

Trailer couplingsee Towing a trailer
Trailer loads and drawbar nose-
weights ...............................................2 01
Trailer towing
Active Blind Spot Assist ................. 194
Active Lane Keeping Assist ............ 197
Blind Spot Assist ............................ 190
Permissible trailer loads and
drawbar noseweights ..................... 201
Transfer case ..................................... 143
Transmission
Display message ............................ 248
see Automatic transmission
Transmission oil
Temperature (on-board computer,
Mercedes-AMG vehicles) ...............2 19
Transmission position display ......... 137
Transporting the vehicle .................. 326
Trim pieces (cleaning instruc-
tions) ..................................................3 11
Trip computer (on-board com-
puter) ..................................................2 08
Trip odometer
Calling up ....................................... 207
Resetting (on-board computer) ...... 209
Trunk
see Cargo compartment
Trunk load (maximum) ......................364
Turn signals
Display message ............................ 234
Replacing bulbs (front) ................... 114
Switching on/off ........................... 109
Two-way radio
Frequencies ................................... 356
Installation ..................................... 356
Transmission output (maximum) .... 356
Type identification plate
see Vehicle identification plate
U
UnlockingEmergency unlocking ....................... 83
From inside the vehicle (central
unlocking button) .............................8 2USB devices
Connecting to the Media Inter-
face .............................................. .272
V
Vanity mirror (in the sun visor) ........285
Vehicle
Correct use ...................................... 30
Data acquisition ............................... 31
Display message ............................ 247
Electronics ..................................... 356
Equipment ....................................... 27
Individual settings .......................... 215
Limited Warranty .............................3 1
Loading .......................................... 340
Locking (in an emergency) ............... 83
Locking (SmartKey) .......................... 76
Lowering ........................................ 354
Maintenance .................................... 28
Operating safety .............................. 29
Operation outside the USA/
Canada ............................................ 28
Parking .......................................... 149
Parking for a long period ................ 152
Pulling away ................................... 130
Raising ........................................... 351
Reporting problems ......................... 30
Securing from rolling away ............ 351
Technical data ............................... 356
Towing away .................................. 324
Transporting .................................. 326
Unlocking (in an emergency) ........... 83
Unlocking (SmartKey) ...................... 76
Vehicle data ................................... 364
Vehicle data
Dimensions .................................... 364
Vehicle emergency locking ................ 83
Vehicle identification number
see VIN
Vehicle identification plate .............. 357
Vehicle level
AIR BODY CONTROL ...................... 168
Display message ............................ 239
Video
Operating the DVD ......................... 212
see also Digital Operator's Man-
ual .................................................. 263
Index23

Protecting the environment
General notes
HEnvironmental note
Daimler's declared policy is one of compre-
hensive environmental protection.
The objectives are for the natural resources
that form the basis of our existence on this
planet to be used sparingly and in a manner
that takes the requirements of both nature
and humanity into account.
You too can help to protect the environment
by operating your vehicle in an environmen-
tally responsible manner.
Fuel consumption and the rate of engine,
transmission, brake and tire wear are affected by these factors:
Roperating conditions of your vehicle
Ryour personal driving style
You can influence both factors. You should
bear the following in mind:
Operating conditions:
Ravoid short trips as these increase fuel con-
sumption.
Ralways make sure that the tire pressures
are correct.
Rdo not carry any unnecessary weight.
Rremove roof racks once you no longer need
them.
Ra regularly serviced vehicle will contribute
to environmental protection. You should
therefore adhere to the service intervals.
Ralways have service work carried out at a
qualified specialist workshop.
Personal driving style:
Rdo not depress the accelerator pedal when
starting the engine.
Rdo not warm up the engine when the vehicle
is stationary.
Rdrive carefully and maintain a safe distance
from the vehicle in front.
Ravoid frequent, sudden acceleration and
braking.
Rchange gear in good time and use each gear
only up to Ôof its maximum engine speed.
Rswitch off the engine in stationary traffic.
Rkeep an eye on the vehicle's fuel consump-
tion.
Environmental concerns and recom-
mendations
Wherever the Operator's Manual requires you to
dispose of materials, first try to regenerate or re-
use them. Observe the relevant environmental
rules and regulations when disposing of materi-
als. In this way you will help to protect the envi-
ronment.
Genuine Mercedes-Benz parts
HEnvironmental note
Daimler AG also supplies reconditioned major
assemblies and parts which are of the same
quality as new parts. They are covered by the
same Limited Warranty entitlements as new
parts.
!Air bags and Emergency Tensioning Devi-
ces, as well as control units and sensors for
these restraint systems, may be installed in
the following areas of your vehicle:
Rdoors
Rdoor pillars
Rdoor sills
Rseats
Rcockpit
Rinstrument cluster
Rcenter console
Do not install accessories such as audio sys-
tems in these areas. Do not carry out repairs or welding. You could impair the operating
efficiency of the restraint systems.
Have aftermarket accessories installed at a
qualified specialist workshop.
You could jeopardize the operating safety of
your vehicle if you use parts, tires and wheels as
well as accessories relevant to safety which
have not been approved by Mercedes-Benz. This
could lead to malfunctions in safety-relevant
26Genuine Mercedes-Benz parts
Introduction

occupant in the best position in relation to the
air bag.
The seat belt system comprises:
RSeat belts
REmergency Tensioning Devices for the front
seat belts and the outer seat belts in the rear
RSeat belt force limiters for the front seat belts
and the outer seat belts in the rear
If the seat belt is pulled out of the belt outlet
quickly or with a jerky movement, the belt
retractor locks. The belt strap cannot be extrac-
ted 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 cor-
rect an incorrect seat position or the routing 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 deceleration force. This can
reduce the force exerted on the vehicle occu-
pants 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 otherwise
lead to the triggering of the Emergency Ten-
sioning 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 systems
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 not worn correctly, it cannot
perform its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury or even fatal injury.
Always ensure that all vehicle occupants have
their seat belts fastened correctly and are sit-
ting properly.
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 in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seat belt is routed
across the center of your shoulder.
GWARNING
Persons less than 5 ft (1.50 m) tall cannot
wear the seat belt correctly without an addi-
tional and suitable restraint system. If the
seat belt is not worn correctly, it cannot per-
form its intended protective function. An
incorrectly fastened seat belt can also cause
injuries, for example, in the event of an acci-
dent or when braking or changing direction
abruptly. This poses an increased risk of injury or even fatal injury.
For this reason, always secure persons under
5 ft (1.50 m) tall in suitable additional restraint
systems.
If a child younger than twelve years old and
under 5 ft (1.50 m) in height is traveling in the
vehicle:
Ralways secure the child in a child restraint
system suitable for this Mercedes-Benz vehi-
cle. The child restraint system must be appro-
priate to the age, weight and size of the child
Ralways observe the instructions and safety
notes on "Children in the vehicle"
(
Ypage 58) in addition to the child restraint
44Occupant safety
Safety

passenger front air bag is deactivated
(Ypage 43).
RAlways observe the instructions and safety
notes on the "Occupant Classification System
(OCS)" (
Ypage 50) and on "Children in the
vehicle" (Ypage 58) in addition to the child
restraint system manufacturer's installation
and operating instructions.
Objects in the vehicle interior may prevent
an air bag from functioning correctly. Before
starting your journey and to avoid risks resulting from the speed of the air bag as it deploys, make
sure that:
Rthere are no people, animals or objects
between the vehicle occupants and an air
bag.
Rthere are no objects between the seat, door
and B-pillar.
Rno hard objects, e.g. coat hangers, hang on
the grab handles or coat hooks.
Rno accessories, such as cup holders, are
attached to the vehicle within the deployment
area of an air bag, e.g. to doors, side windows,
rear side trim or side walls.
Rno heavy, sharp-edged or fragile objects are in
the pockets of your clothing. Store such
objects in a suitable place.
GWARNING
If you modify the air bag cover or affix objects
such as stickers to it, the air bag can no longer
function correctly. There is an increased risk
of injury.
Never modify an air bag cover or affix objects
to it.
GWARNING
Sensors to control the air bags are located in
the doors. Modifications or work not per-
formed correctly to the doors or door panel-
ing, as well as damaged doors, can lead to the
function of the sensors being impaired. The air
bags might therefore not function properly
anymore. Consequently, the air bags cannot
protect vehicle occupants as they are
designed to do. There is an increased risk of
injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door pan-
eling carried out at a qualified specialist work-
shop.
Front air bags
!Do not place heavy objects on the front-
passenger seat. This could cause the system
to identify the seat as being occupied. In the
event of an accident, the restraint systems on
the front-passenger side may be triggered
and have to be replaced.
Driver's air bag :deploys in front of the steer-
ing wheel. Front-passenger front air bag ;
deploys in front of and above the glove box.
When deployed, the front air bags offer addi-
tional head and thorax protection for the occu-
pants in the front seats.
The PASSENGER AIR BAG OFF indicator lamp
informs you about the status of the front-
passenger front air bag (
Ypage 43).
The front-passenger front air bag will only
deploy if:
Rthe system, based on the OCS weight sensor
readings, detects that the front-passenger
seat is occupied (
Ypage 50). The
PASSENGER AIR BAG OFF indicator lamp is
not lit (
Ypage 50)
Rthe restraint system control unit predicts a
high accident severity
48Occupant safety
Safety

Occupant Classification System
(OCS)
Introduction
The Occupant Classification System (OCS) cat-
egorizes the person in the front-passenger seat.
Depending on that result, the front-passenger
front air bag is either enabled or deactivated.
The system does not deactivate:
Rthe side impact air bag
Rthe window curtain air bag
Rthe Emergency Tensioning Devices
Requirements
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 possible
If the front passenger does not observe these
conditions, OCS may produce a false classifica-
tion, 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. a
cushion. 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 backrest
and the head restraint position accordingly.
Only then can OCS be guaranteed to function
correctly. Always observe the child restraint sys-
tem manufacturer's installation and operating
instructions.
Occupant Classification System opera-
tion (OCS)
:PASSENGER AIR BAG ON indicator lamp
;PASSENGER AIR BAG OFF 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 simul-
taneously for approximately six seconds.
The indicator lamps display the status of the
front-passenger front air bag.
RPASSENGER AIR BAG ON lights up for 60 sec-
onds, subsequently both indicator lamps are
off (PASSENGER AIR BAG ON and OFF): the
front-passenger front air bag is able to deploy
in the event of an accident.
RPASSENGER AIR BAG OFF lights up: the front-
passenger front air bag is deactivated. It will
then not be deployed in the event of an acci-
dent.
If the PASSENGER AIR BAG ON indicator lamp is
off, only the PASSENGER AIR BAG OFF indicator lamp shows the status of the front-passenger
front air bag. The PASSENGER AIR BAG OFF
indicator lamp may be lit continuously or be off.
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 instrument clus-
ter (
Ypage 232). When the front-passenger
seat is occupied, always pay attention to the
PASSENGER AIR BAG OFF indicator lamp. Be
aware of the status of the front-passenger front air bag both before and during the journey.
50Occupant safety
Safety

ProblemPossible causes/consequences andMSolutions
The PASSENGER AIR
BAG OFF indicator lamp
lights up and remains lit,
even though the front-
passenger seat is occu-
pied by an adult or a per-
son of a stature corre-
sponding to that of an
adult.The classification of the person on the front-passenger seat is incor-
rect.
XMake sure the conditions for a correct classification of the person
on the front-passenger seat are met (Ypage 50).
XIf the PASSENGER AIR BAG OFF indicator lamp remains lit, the front-
passenger seat may not be used.
XHave OCS checked as soon as possible at an authorized Mercedes- Benz Center.
The PASSENGER AIR
BAG OFF indicator lamp
does not light up and/or
does not stay on.
The front-passenger seat
is:
Runoccupied
Roccupied with the
weight of a child up to
twelve months old in a
child restraint system
OCS is malfunctioning.
XMake sure there is nothing between the seat cushion and the child
seat.
XMake sure that the entire base of the child restraint system rests 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. If necessary,
adjust the position of the front-passenger seat.
XMake sure that the seat cushion length is fully retracted.
XWhen installing the child restraint system, make sure that the seat
belt is tight. Do not pull the seat belt tight using the front-passenger seat adjustment. This could result in the seat belt and the child
restraint system being pulled too tightly.
XCheck for correct installation of the child restraint system.
Make sure that the head restraint does not apply a load to the child
restraint system. If necessary, adjust the head restraint accord-
ingly.
XMake sure that no objects are applying additional weight onto the
seat.
XIf the PASSENGER AIR BAG OFF indicator lamp remains off and/or
the PASSENGER AIR BAG ON indicator lamp lights up, do not install a child restraint system on the front-passenger seat. It is recom-
mended that you install the child restraint system on a suitable rear
seat.
XHave OCS checked as soon as possible at an authorized Mercedes-Benz Center.
Deployment of Emergency Tensioning
Devices and air bags
Important safety notes
GWARNING
The air bag parts are hot after an air bag has
been deployed. There is a risk of injury.
Do not touch the air bag parts. Have a
deployed air bag replaced at a qualified spe-
cialist workshop as soon as possible.
GWARNING
A deployed air bag no longer offers any pro-
tection and cannot provide the intended pro-
tection in an accident. There is an increased
risk of injury.
Have the vehicle towed to a qualified special-
ist workshop in order to have a deployed air
bag replaced.
It is important for your safety and that of your
passenger to have deployed air bags replaced
54Occupant safety
Safety