Structure and characteristics
(definition) .....................................
349
Summer tires ................................. 330
Temperature .................................. 345
TIN (Tire Identification Number)
(definition) ..................................... 351
Tire bead (definition) ......................351
Tire pressure (definition) ................ 351
Tire pressures (recommended)
......349
Tire size (data) ............................... 357
Tire size designation, load-bearing
capacity, speed rating .................... 346
Tire tread ....................................... 329
Tire tread (definition) .....................351
Total load limit (definition) ............. 352
Traction ......................................... 344
Traction (definition) ....................... 351
Tread wear ..................................... 344
TWR (permissible trailer drawbar
noseweight) (definition) .................351
Uniform Tire Quality Grading
Standards ...................................... 344
Uniform Tire Quality Grading
Standards (definition) .................... 349
Unladen weight (definition) ............ 350
Wear indicator (definition) .............352
Wheel rim (definition) .................... 349
see Flat tire
Top Tether ............................................ 62
Towing Important safety guidelines ...........320
Installing the towing eye ................ 321
Removing the towing eye ...............321
With the rear axle raised ................ 322
Towing a trailer
Active Parking Assist .....................188
Cleaning the trailer tow hitch ......... 308
Coupling up a trailer ......................210
Decoupling a trailer ....................... 212
Driving tips .................................... 208
Important safety notes .................. 208
Installing the ball coupling .............210
Lights display message .................. 239
Mounting dimensions .................... 374
Power supply ................................. 213
Removing the ball coupling ............213
Shift range ..................................... 151Storing the ball coupling
................213
Trailer loads ................................... 374
Towing away
With both axles on the ground ....... 322
Tow-starting
Emergency engine starting ............ 323
Important safety notes
..................320
Trailer coupling
see Towing a trailer
Trailer loads and drawbar
noseweights ...................................... 212
Trailer towing Active Blind Spot Assist ................. 205
Active Lane Keeping Assist .... 202, 208
Blind Spot Assist ............................ 200
PARKTRONIC ................................. 183
Permissible trailer loads and
drawbar noseweights .....................212
Transfer case ..................................... 154
Transmission see Automatic transmission
Transmission position display .........149
Transmission position display
(DIRECT SELECT lever) ......................149
Transporting the vehicle .................. 322
Traveling uphill Brow of hill ..................................... 169
Driving downhill ............................. 169
Maximum gradient-climbing
capability ....................................... 169
Trim pieces (cleaning instructions) . 309
Trip computer (on-board
computer) .......................................... 219
Trip odometer Calling up ....................................... 219
Resetting (on-board computer) ...... 220
see Trip odometer
Turn signals
Changing bulbs (front) ................... 119
Display message ............................ 240
Switching on/off ........................... 112
see Turn signals
TWR (Tongue Weight Rating)
(definition) ......................................... 351
Type identification plate see Vehicle identification plate Index
19
Stowage space in the rear
Stowage compartment in the rear
!
Do not sit or lean
your bodyweight on the
armrests when they are folded out as you
could damage them.
! Close the cover of the stowage
compartment before folding the rear seat
armrest back into the seat backrest. X
To open: fold down seat armrest 0044.
X Fold cover 0043 of the armrest upwards. Stowage net
Stowage nets are located in the front-
passenger footwell and on the left-hand side
of the cargo compartment.
Observe the loading guidelines ( Y page 270)
and the safety notes regarding stowage
spaces ( Y page 271). Cargo compartment enlargement
Important safety notes G
WARNING
If the rear bench seat/rear seat and seat
backrest are not engaged they could fold
forwards, e.g. when braking suddenly
or in the
event of an accident.
R The vehicle occupant would thereby be
pushed into the seat belt by the rear bench
seat/rear seat or by the seat backrest. The
seat belt can no longer offer the intended level of protection and could even cause
injuries.
R Objects or loads in the trunk/cargo
compartment cannot be restrained by the
seat backrest.
There is an increased risk of injury.
Before every trip, make sure that the seat
backrests and the rear bench seat/rear seat
are engaged.
Observe the loading guidelines (
Y page 270).
The left-hand and right-hand rear seat
backrests can be folded forwards separately
to increase the cargo compartment capacity.
Folding the rear seat backrest forward X
Fully insert the backrest head restraints
(Y page 99).
X Move the driver's or front-passenger seat
forward if necessary.
X Pull left-hand or right-hand release
handle 0044 of the seat backrest forwards.
Corresponding seat backrest 0043 is
released.
X Fold backrest 0043 forwards.
X Move the driver's or front-passenger seat
back if necessary.272
Stowage areas
Stowage and features
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
R
R Collapsible spare wheel
R an emergency spare wheel (only
for certain
countries) (Y page 359)
Information on changing/mounting a wheel
(Y page 352).
X Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 160).
X If possible, bring the front wheels into the
straight-ahead position.
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics have status 0,
which is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 141).
X All occupants must get out of the vehicle.
Make sure that
they are
not endangered as
they do so.
X Make sure that no one is near the danger
area while a wheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to
traffic conditions when doing so.
X Close the driver's door. MOExtended tires (tires with run-flat
properties)
General notes With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is a total loss of
pressure in one or more tires. The affected
tire must not show
any
clearly visible damage.
You can recognize MOExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-
bearing capacity and the speed index
(Y page 346).
MOExtended tires may only be used in
conjunction with an active tire pressure loss
warning system or with an active tire pressure
monitor.
If the pressure loss warning message
appears in the multifunction display:
R Observe the instructions in the display
messages ( Y page 252).
R Check the tire for damage.
R If driving on, observe the following notes.
The maximum driving distance is
approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden.
In addition to the vehicle load, the driving
distance possible depends upon:
R Speed
R Road condition
R Outside temperature
The driving distance possible in run-flat mode
may be reduced by extreme driving
conditions/maneuvers, or it can be increased
through a moderate style of driving.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tire pressure loss warning
appears in the multifunction display. Flat tire
313
Breakdown assistance
your vehicle’s Tire and Loading Information
placard.
X Step 2: Determine the combined weight of
the driver and passengers
that will be riding
in your vehicle.
X Step 3: Subtract the combined weight of
the driver and passengers from XXX
kilograms or XXX lbs.
X Step 4: The resulting figure equals the
available amount of cargo and
luggage load
capacity. For example, if the "XXX" amount
equals 1400 lbs and there will be five
150 lbs passengers in your vehicle, the
amount of available cargo and luggage load
capacity is 650 lbs (1 400 - 750 (5 x 150)
= 650 lbs).
X Step 5: Determine the combined weight of
luggage and cargo being loaded on the
vehicle. That weight may
not safely exceed
the available cargo and luggage load
capacity calculated in step 4.
X Step 6 (if applicable): If your vehicle will
be towing a trailer, load from your trailer
will be transferred to your
vehicle. Refer to
this Operator's Manual to determine how
this reduces the available cargo and
luggage load capacity of your vehicle
(Y page 343). Loading the vehicle
341
Wheels and tires Z
reduce the braking distance on snow-covered
surfaces in comparison with summer tires.
Stopping distance, however, is still
considerably greater than when the road is
not covered with ice or snow. Take
appropriate care when driving.
!
Avoid wheelspin. This can lead
to damage
to the drive train. Temperature
G
WARNING
The temperature grade for this tire is
established for a tire that is properly inflated
and not overloaded. Excessive speed,
underinflation, or excessive loading, either
separately or in combination, can cause
excessive heat build-up and possible tire
failure.
The temperature grades are A (the highest),
B, and C. These represent the tire's
resistance to the generation of heat and its
ability to dissipate heat when tested under
controlled conditions on a specified indoor
laboratory test wheel. Sustained high
temperature can cause the material
of the tire
to degenerate and reduce tire life, and
excessive temperature can lead to sudden
tire failure. The grade C corresponds to a level
of performance which all passenger car tires
must meet under the Federal Motor Vehicle
Safety Standard No. 109. Grades B and A
represent higher levels of performance on the
laboratory test wheel than the minimum
required by law. Tire labeling
Overview of tire labeling
The following markings are on the tire in
addition to the tire name (sales designation)
and the manufacturer's name: 0043
Uniform Tire Quality Grading Standard
(Y page 349)
0044 DOT, Tire Identification Number
(Y page 348)
0087 Maximum tire load ( Y page 343)
0085 Maximum tire pressure (Y page 334)
0083 Manufacturer
0084 Tire material ( Y page 349)
006B Tire size designation, load-bearing
capacity and speed index (
Y page 346)
006C Load index ( Y page 348)
006D Tire name
i Tire data is vehicle-specific and may
deviate from the data in the example. Tire labeling
345
Wheels and tires Z
Tire size designation, load-bearing
capacity and speed rating
0043
Tire width
0044 Nominal aspect ratio in %
0087 Tire code
0085 Rim diameter
0083 Load bearing index
0084 Speed rating
i Tire data is vehicle-specific and may
deviate from the data in the example.
General: depending on the manufacturer's
standards, the size imprinted in the tire wall
may not contain any letters or may contain
one letter that precedes
the
size description.
If there is no letter preceding the size
description (as shown above): these are
passenger vehicle tires according to
European manufacturing standards.
If "P" precedes the size description: these are
passenger vehicle tires according to U.S.
manufacturing standards.
If "LT" precedes the size description: these
are light truck tires according to U.S.
manufacturing standards.
If "T" precedes the size description: these are
compact emergency spare wheels at high tire
pressure, to be used only temporarily in an
emergency.
Tire width: tire width 0043 shows the nominal
tire width in millimeters.
Height-width ratio: aspect ratio 0044 is the
size ratio between the tire height and tire
width and is shown in percent. The aspect ratio is calculated by dividing the tire width by
the tire height.
Tire code:
tire code 0087 specifies
the tire type.
"R" represents radial tires; "D" represents
diagonal tires; "B" represents diagonal radial
tires.
Optionally, tires with a maximum speed of
over 149 mph (240 km/h) may have "ZR" in
the size description, depending on the
manufacturer (e.g. 245/40 ZR 18).
Rim diameter: rim diameter 0085 is the
diameter of the bead seat, not the diameter
of the rim flange. The rim diameter is
specified in inches (in).
Load-bearing index: load-bearing index 0083
is a numerical code that specifies the
maximum load-bearing capacity of a tire.
Do not overload the tires by exceeding the
specified load limit. The maximum
permissible load can be found on the
vehicle's Tire and Loading Information
placard on the B-pillar on the driver's side
(Y page 339).
Example:
Load-bearing index 91 indicates a maximum
load of 1,356 lb (615 kg) that the tires can
bear. For further information on the maximum
tire load in kilograms and lbs, see
(Y page 343).
For further information on the load bearing
index, see "Load index" ( Y page 348).
Speed rating: speed rating 0084 specifies the
approved maximum speed of the tire. G
WARNING
Exceeding the stated tire load-bearing
capacity and the approved maximum speed
could lead to tire damage
or the tire bursting.
There is a risk of accident.
Therefore, only use tire types and sizes
approved for your vehicle model. Observe the
tire load rating and speed rating required for
your vehicle.
Regardless of the speed rating, always
observe the speed limits. Drive carefully and 346
Tire labeling
Wheels and tires
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum
gross axle weight
rating. The actual load on an axle must never
exceed the gross axle weight rating. The
gross axle weight rating can be found on the
vehicle identification plate on the B-pillar on
the driver's side. 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 vehicle weight rating GVWR
as specified on the vehicle 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 the curb
weight of the vehicle, the weight of the
accessories, the total load limit and the
weight of the optional equipment
installed at
the factory. Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa
corresponds 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 system and optional equipment
if these are installed in the vehicle, but does
not include passengers or luggage. Maximum load rating
The maximum load rating in kilograms or
pounds is the maximum weight for which a
tire is approved. Maximum permissible tire pressure
Maximum permissible tire pressure for one
tire. 350
Definition of terms for tires and loading
Wheels and tires
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
width in percent. Tire pressure
This is pressure inside the tire applying an
outward force to each square
inch of the tire's
surface. 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. Tire pressure of cold tires
The tires are cold:
R if the vehicle has been parked without
direct sunlight on the tires
for at least three
hours and
R if 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. Sidewall
The part of the tire
between the tread and the
bead. Weight of optional extras
The combined weight of those
optional extras
that weigh more than the replaced standard
parts and more than 2.3 kg (5 lbs). These
optional extras, such as high-performance
brakes, level control, a roof rack or a high-
performance battery, are not included in the
curb weight and the weight of the
accessories. TIN (Tire Identification Number)
This is a unique identifier which can be used
by a tire manufacturer to identify tires, for
example for a product recall,
and thus identify
the purchasers. The TIN is made up of the
manufacturer's identity code, tire size, tire
type code and the manufacturing date. Load bearing index
The load bearing index (also load index) is a
code that contains the maximum
load bearing
capacity of a tire. Traction
Traction is the result of friction between the
tires and the road surface. TWR (Tongue Weight Rating)
The TWR specifies the maximum permissible
weight that the ball coupling
of the trailer tow
hitch can support. Definition of terms for tires and loading
351
Wheels and tires Z