Sidewall (definition) ....................... 265
Snow chains .................................. 249
Speed rating (definition) ................ 264
Storing ........................................... 267
Structure and characteristics
(definition) ..................................... 264
Summer tires ................................. 249
TIN (Tire Identification Number)
(definition) ..................................... 265
Tire bead (definition) ...................... 265
Tire pressure (definition) ................ 265
Tire pressures (recommended) ...... 264
Tire size (data) ....................... 257, 272
Tire size designation, load-bearing
capacity, speed rating .................... 261
Tire tread ....................................... 248
Tire tread (definition) ..................... 265
Total load limit (definition) ............. 266
Traction (definition) ....................... 266
TWR (permissible trailer drawbar
noseweight) (definition) ................. 266
Uniform Tire Quality Grading
Standards (definition) .................... 264
Wear indicator (definition) ............. 266
Wheel rim (definition) .................... 264
Top Tether ............................................ 50
Touchshift (automatic transmis-
sion) .................................................... 125
Tow-away alarm
Arming/deactivating ........................ 57
Deactivating ..................................... 57
Operation ......................................... 57
Tow-starting
Emergency engine starting ............ 246
Important safety notes .................. 243
Towing
If the vehicle is stuck ..................... 245
Installing/removing the towing
eye ................................................. 244
With a raised front or rear axle ...... 245
Towing a trailer
Axle load, permissible .................... 287
Cleaning the trailer tow hitch ......... 237
Coupling up a trailer ...................... 157
Decoupling a trailer ....................... 159
Driving tips .................................... 155
Important safety notes .................. 155
Notes on retrofitting ...................... 286 Trailer loads ................................... 287
Tow ing aw
ay
Important safety guidelines ........... 243
In the event of malfunctions .......... 244
With both axles on the ground ....... 245
Trailer
Brake force booster malfunction ... 195
Trailer coupling
see Towing a trailer
Trailer loads and drawbar nose-
weights ............................................... 159
Trailer towing
Blind Spot Assist ............................ 146
PARKTRONIC ................................. 153
Permissible trailer loads and
drawbar noseweights ..................... 159
Transmission
see Automatic transmission
Transmission oil ................................ 282
Transport
Loading guidelines ......................... 212
Vehicle ........................................... 246
Transport by rail ................................ 135
Transportation
Rail ................................................ 135
Transporting
Load distribution ............................ 214
Securing a load .............................. 214
Trim pieces (cleaning instruc-
tions) .................................................. 238
Trip computer (on-board com-
puter) .................................................. 174
Trip meter
see Trip odometer
Trip odometer
Display (vehicles with steering
wheel buttons) ............................... 167
Display (vehicles without steering
wheel buttons) ............................... 163
Resetting ....................................... 162
see Trip computer (on-board computer)
Turn signals
Replacing bulbs (front) ..................... 88
Replacing bulbs (rear) ...................... 89
Switching on/off .............................. 81
Turn signals (Chassis Cab)
Replacing bulbs (rear) ...................... 90
Index19
Twin front-passenger seatStowage compartment .................. 206
Two-way radios
Type approval/frequency .............. 275
TWR (Tongue Weight Rating) (defi-
nition) ................................................. 266
U
Unlocking
From inside the vehicle (central
unlocking button) ............................. 64
USB port ............................................. 211
V
Vehicle
Data acquisition ............................... 29
Display message ............................ 192
Electronics ..................................... 275
Equipment ....................................... 22
Individual settings (vehicles with
steering wheel buttons) ................. 168
Limited Warranty ............................. 22
Loading .......................................... 258
Locking (SmartKey) .......................... 59
Lowering ........................................ 271
Maintenance .................................... 23
Operating safety .............................. 25
Parking for a long period ................ 132
Pulling away ................................... 121
Raising ........................................... 268
Registration ..................................... 27
Reporting problems ......................... 27
Securing from rolling away ............ 130
Towing away .................................. 243
Transporting .................................. 246
Unlocking (SmartKey) ...................... 59
Vehicle battery
see Battery (vehicle)
Vehicle bodies ..................................... 27
Body/equipment mounting direc-
tives for trucks ................................. 27
Vehicle data ....................................... 285
Vehicle identification number .......... 276
Vehicle identification plate .............. 276
Vehicle tool kit .................................. 240 Vents
see Air vents
Voltage supply
Fuses ............................................. 246
W
Warning Stickers ........................................... 24
Warning and indicator lamp
Diesel particle filter ....................... 201
Power assistance for the steering .. 203
Warning and indicator lamps
Brakes ........................................... 195
Check Engine ................................. 200
Coolant .......................................... 199
Diesel Exhaust Fluid (DEF) ............. 197
Electrical step ................................ 203
ESP
®.............................................. 194
ESP®function ................................ 197
Overview .......................................... 33
Seat belt ........................................ 203
Warning lamp .................................... 241
Warning triangle ................................ 241
Warning- and indicator lamps
ABS ................................................ 195
Air filter .......................................... 201
ASR ................................................ 194
BAS ................................................ 195
Battery charge ............................... 198
Brake wear .................................... 198
Bulbs .............................................. 203
Doors ............................................. 203
Engine oil level ............................... 198
Preglow .......................................... 201
Reserve fuel ................................... 200
Tire pressure monitor .................... 202
Water separator ............................. 202
Windshield washer fluid ................. 202
Warranty .............................................. 22
Washer fluid
Adding ........................................... 224
Capacities ...................................... 285
Display message ............................ 193
Indicator lamp ................................ 202
Notes ............................................. 284
Wiping with ...................................... 93
20Index
FunctionPage
¦Fluid level too low in wind-
shield washer/headlamp
cleaning system
202
åDEF supply low or contami-
nated/diluted162
Exhaust gas aftertreatment
malfunction197
ÄIndicator lamp, distance
warning143
·Warning lamp, distance
warning143
ÃWarning and indicator lamps,
Lane Keeping Assist147
1Door or hood open203
Electrically operated step
malfunction203
#Brake pads/linings worn198
+LOW RANGE active148
KHigh-beam headlamps on
(vehicle with steering wheel
buttons)
81
JRight-hand turn signal81
:ASR malfunction53
BAS malfunction195
hESP®malfunction194
ÈDirt accumulation in air filter201
6Reserve fuel162
Fuel filler cap open200
FunctionPage
:Water in the fuel202
mFuel filter dirty202
#Battery charging malfunction198
bBulb defective203
=Tachometer with warning
and indicator lamps
cParking brake applied136
LLow-beam headlamps on79
KWorking speed governor
(ADR) on154
ÐPower steering assistance
malfunction203
KHigh-beam headlamps on
(vehicle without steering
wheel buttons)
81
åDEF supply low or contami-
nated/diluted162
Exhaust gas aftertreatment
malfunction197
|Reserve fuel200
Fuel filler cap open200
\Diesel particle filter malfunc-
tion201
hESP®malfunction194
7Fasten seat belts203
iCorresponding messages may also be
shown in the display (Ypage 176).
34Instrument cluster
At a glance
Changing bulbs
Important safety notes
GDANGER
Xenon bulbs carry a high voltage. You can get an electric shock if you remove the cover of
the Xenon bulb and touch the electrical con-
tacts. There is a risk of fatal injury.
Never touch the parts or the electrical con-
tacts of the Xenon bulb. Always have work on
the Xenon bulbs carried out at a qualified spe-
cialist workshop.
GWARNING
Bulbs, lamps and connectors can get very hot
when operating. If you change a bulb, you
could burn yourself on these components.
There is a risk of injury.
Allow these components to cool down before
changing a bulb.
!Make sure the bulbs are always securely
installed.
If your vehicle is equipped with Bi-Xenon bulbs,
you can recognize this by the following: the cone
of light from the Xenon bulbs moves from the
top to the bottom and back again when you start
the engine. For this to be observed, the low-
beam headlamps must be switched on before
starting the engine.
The bulbs and lamps are an essential compo-
nent of vehicle safety. You must therefore make
sure that these function correctly at all times.
Have the headlamp setting checked regularly.
RAlways switch off the vehicle's lighting sys-
tem before changing a bulb.
This will prevent a short circuit.
RDo not touch the glass tube of new bulbs with your bare hands. Always use a clean, lint-free
cloth or only touch the base of the bulb when
installing.
Even minor contamination can burn into the
glass surface and reduce the service life of the
bulbs.
RDo not use a bulb that has been dropped or
that has scratches on its glass tube.
The bulb could explode.
ROnly use bulbs in closed lamps which have
been designed for this purpose.
ROnly use spare bulbs of the same type and
with the prescribed voltage
RProtect the bulbs from moisture when in use.
If the new bulb still does not light up, consult a
qualified specialist workshop.
RHave the LEDs and bulbs of the following
lamps changed at a qualified specialist work-
shop:
-the additional turn signals in the exterior
mirrors
-the high-mounted brake lamp
-LED daytime running lamps (Bi-Xenon
headlamps)
-Bi-Xenon lamps (Bi-Xenon headlamps)
-front fog lamps
If you require assistance changing bulbs, con-
sult a qualified specialist workshop.
Front bulbs
Overview of bulb replacement – bulb
types
The following bulbs can be replaced. Bulb types can be found in the legend.
Vehicle swit hhalogen headlamps
:
Turn signal: PY21W
;Daytime running lamps: W21W
=Low-beam headlamps: H7 55W
?High-beam headlamps: H7 55W
AParking lamps/standing lamps: W5W
86Changing bulbs
Lights and windshield wipers
On vehicles with a battery main switch, you must
first switch on the power supply (Ypage 118).
iTo unlock the steering, move the steering
wheel slightly while turning the key to position
1.
Preparing for a journey
Visual check of the vehicle exterior
XIn particular, check the following components
on the vehicle, and on the trailer as necessary:
Rlicense plates, vehicle lighting, turn signals,
brake lamps and wiper blades for dirt and
damage
Rtires and wheels for firm seating, correct
tire pressure and general condition
Rtrailer tow hitch for play and security
The trailer coupling is one of the most
important vehicle parts with regard to road
safety. The separate instructions issued by
the manufacturer pertaining to operation,
care and maintenance should be observed.
Rthat contour markings on attachments and
bodies are in good condition
XRectify any noticeable defects before com-
mencing the journey.
Checks in the vehicle
Emergency equipment and first-aid kit
XCheck the equipment to make sure that it is
accessible, complete and ready for use.
The first aid and breakdown assistance equip-
ment is in the front door stowage compartments
and behind the driver's seat.
Vehicle lighting
XTurn the key to position 2in the ignition lock.
XCheck the lighting system with the aid of a
second person.
XReplace defective bulbs (Ypage 86).
Before driving off
GWARNING
Objects in the driver's footwell may restrict
the clearance around the pedals or block a
depressed pedal. This jeopardizes the oper-
ating and road safety of the vehicle. There is a risk of an accident.
Stow all objects securely in the vehicle so that
they do not get into the driver's footwell.
When using floormats or carpets, make sure
that they are properly secured so that they do not slip or obstruct the pedals. Do not place
several floormats or carpets on top of one
another.
GWARNING
Unsuitable footwear can hinder correct usage of the pedals, e.g.:
Rshoes with thick soles
Rshoes with high heels
Rslippers
There is a risk of an accident.
Wear suitable footwear to ensure correct
usage of the pedals.
XSecure the load as per the loading guidelines
(Ypage 212).
XStow luggage items securely. Secure the load
as per the loading guidelines (Ypage 212).
XMake sure that the floormats and carpets are
properly secured so that they cannot slip and
obstruct the pedals.
XClose all doors.
Starting the engine
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is a risk of fatal injury. Therefore never leave
the engine running in enclosed spaces with-
out sufficient ventilation.
!Do not depress the accelerator pedal when
starting the engine.
XBefore starting the engine, make sure that:
120Driving
Driving and parking
Reverse warning device
GWARNING
Other road users may ignore or fail to hear the warning tone of the reverse warning feature.
There is a risk of injury if you fail to ensure that
the area in which you are maneuvering is
clear.
Make sure that there are no persons or
objects in the area in which you are maneu-
vering. It may be necessary to enlist the help
of a second person when maneuvering.
The reverse warning feature is a system
designed to assist you in ensuring the safety of
other road users.
A warning signal sounds to alert other road
users when reverse gear is engaged. The volume
of the warning tone can be reduced for night-
time driving.
XTo reduce the volume of the warning tone:
engage reverse gear twice in quick succes-
sion.
The warning tone is now quieter.
iThe warning tone sounds at a normal vol-
ume by default. The volume of the warning
tone has to be reduced each time you engage
reverse gear if necessary.
122Driving
Driving and parking
and that it is not swallowed. Do not inhale fuelvapors. Keep fuel away from children.
If you or others come into contact with fuel,
observe the following:
RWash away fuel from skin immediately
using soap and water.
RIf fuel comes into contact with your eyes,
immediately rinse them thoroughly with
clean water. Seek medical assistance with-
out delay.
RIf fuel is swallowed, seek medical assis-
tance without delay. Do not induce vomit-
ing.
RImmediately change out of clothing which
has come into contact with fuel.
GWARNING
If you mix diesel fuel with gasoline, the flash
point is lower than that of pure diesel fuel.
When the engine is running, exhaust system
components could overheat without being
noticed. There is a risk of fire.
Never refuel with gasoline. Never mix gasoline with diesel fuel.
HEnvironmental note
If fuels are handled improperly, they pose a
danger to persons and the environment. Do
not allow fuels to run into the sewage system,
the surface waters, the ground water or into
the ground.
!Do not use gasoline to refuel vehicles with a
diesel engine. Even small amounts of gasoline
will cause damage to the fuel system and
engine.
!Do not switch on the ignition if you acciden-
tally refuel with the wrong fuel. Otherwise, the
fuel will enter the fuel lines. Notify a qualified
specialist workshop and have the fuel tank
and fuel lines drained completely.
!Overfilling the fuel tank could damage the
fuel system.
!Take care not to spill any fuel on painted
surfaces. You could otherwise damage the
paintwork.
!Filter the fuel before transferring it to the
vehicle if you are refueling the vehicle from
barrels or containers.
This will prevent malfunctions in the fuel sys-
tem due to contaminated fuel.
Further information on fuel and on fuel grades
can be found in the "Technical data" section
(
Ypage 277).
Refueling procedure
The fuel filler flap is beside the front left-hand
door when viewed in the direction of travel. It is
only possible to open the fuel filler flap when the front door is open.
XRemove the key from the ignition lock.
XSwitch off the auxiliary heating system
(Ypage 106).
XOpen the front left-hand door first, and then
the fuel filler flap.
XClose all vehicle doors to prevent fuel vaporsfrom entering the vehicle interior.
XTurn fuel filler cap ;counter-clockwise,
remove it and let it hang from strap :.
XCompletely insert the filler neck of the fuel
pump nozzle into the tank and refuel.
XOnly fill the tank until the pump nozzle
switches off. Fuel may otherwise leak out.
XReplace tank filler cap;on tank and turn
clockwise.
You will hear a click when the fuel filler cap is
closed fully.
XOpen the front left-hand door first, and then
close the filler flap.
128Refueling
Driving and parking
Problems with cruise control
ProblemPossible causes/consequences andMSolutions
On vehicles with steering
wheel buttons, the
speed cannot be set
when cruise control is
activated.The display shows a high-priority message. Thus a change in speed is
not possible.
XProceed as instructed by the message in the display.
XDeactivate cruise control
COLLISION PREVENTION ASSIST
General notes
COLLISION PREVENTION ASSIST comprises the
distance warning function and adaptive Brake
Assist.
Distance warning function
Important safety notes
iNote the section on 'Important safety notes'
(Ypage 52).
GWARNING
The distance warning function does not react:
Rto people or animals
Rto oncoming vehicles
Rto crossing traffic
Rwhen cornering
Thus, the distance warning function cannot
provide a warning in all critical situations.
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
GWARNING
The distance warning function cannot always
clearly identify objects and complex traffic
situations.
In such cases, the distance warning function
may:
Rgive an unnecessary warning
Rnot give a warning
There is a risk of an accident.
Always pay careful attention to the traffic sit- uation and do not rely solely on the distance
warning function.
Operation
The distance warning function can help you to
minimize the risk of a front-end collision with a
vehicle ahead or reduce the effects of such a
collision. If the distance warning function
detects that there is a risk of a collision, you will
be warned visually and acoustically. Without
your intervention, the distance warning function
cannot prevent a collision.
The distance warning function will issue a warn-
ing at speeds of around 20 mph (30 km/h) or
more if:
Ryou approach a vehicle ahead of you very
quickly. You will then hear an intermittent
warning tone and the red ·warning lamp
in the instrument cluster flashes.
XBrake immediately in order to increase the
distance from the vehicle in front.
or
XTake evasive action provided it is safe to do
so.
If you want the distance warning function to
assist you, the function must be activated and
operational.
Due to the nature of the system, particularly
complicated driving conditions may cause the
system to display an unnecessary warning.
With the help of the radar sensor system, the
distance warning function can detect obstacles
that are in the path of your vehicle for an exten-
ded period of time.
Up to a speed of around 45 mph (70 km/h), the
distance warning function can also react to sta-
tionary obstacles, such as stopped or parked
vehicles.
142Driving systems
Driving and parking