Characteristics
.............................. 354
Checking ........................................ 335
Definition of terms .........................354
Direction of rotatio n...................... 357
Display message ............................ 258
Distributio nofthe vehicle
occupants (definition) ....................357
DOT, Tire Identification Number
(TIN) .............................................. .354
DOT (Department of
Transportation) (definition) ............355
GAWR (Gross Axle Weight Rating)
(definition) ..................................... 355
GVW (Gross Vehicle Weight)
(definition) ..................................... 355
GVW R(Gross Vehicle Weight
Rating) (definition) .........................355
Important safety notes ..................334
Increase dvehicle weight due to
optional equipment (definition) ......355
Kilopascal (kPa )(definition) ...........355
Labeling (overview )........................ 351
Load bearing index (definition) ......356
Load index ..................................... 353
Load index (definition) ...................355
Maximum loaded vehicle weight
(definition) ..................................... 355
Maximum loa donatire
(definition) ..................................... 356
Maximum permissible tire
pressure (definition) ....................... 356
Maximum tire loa d......................... 353
Maximum tire loa d(definition) .......356
MOExtended tires ..........................336
Optional equipment weight
(definition) ..................................... 356
PSI (pounds per square inch)
(definition) ..................................... 356
Replacing ....................................... 357
Service life ..................................... 336
Sidewall (definition) .......................356
Speed rating (definition) ................355
Storing ........................................... 357
Structure and characteristics
(definition) ..................................... 354
Temperature .................................. 350
TIN (Tire Identification Number)
(definition) ..................................... 356Tire bea
d(definition) ...................... 356
Tire pressure (definition) ................356
Tire pressure s(recommended )...... 355
Tire size (data) ............................... 362
Tire size designation, load-bearing
capacity, spee drating .................... 351
Tire tread ....................................... 335
Tire tread (definition) .....................356
Total loa dlimit (definition) .............357
Traction ......................................... 350
Traction (definition) .......................356
Trea dwear ..................................... 350
Uniform Tire Quality Grading
Standard s...................................... 349
Uniform Tire Quality Grading
Standard s(definition) .................... 355
Unladen weight (definition) ............356
Wea rindicato r(definition) .............356
Whee lrim (definition ).................... 355
see Flat tire
Top Tether ............................................ 64
Towing Important safety guidelines ...........328
Installing the towing eye. ...............329
Removing the towing eye. ..............330
With the rear axle raised ................330
Towing away
With both axle sonthe ground .......330
Tow-starting
Emergency engine starting ............331
Important safety notes ..................328
Transmission
see Automatic transmission
Transmission position display .........156
Transmission position display
(DIRECT SELECTl ever)...................... 156
Transporting the vehicle ..................330
Trim pieces (cleaning instructions) .316
Trip computer (on-board
computer) .......................................... 222
Trip odometer Calling up ....................................... 222
Resetting (on-board computer) ......223
Trunk
Emergency release ..........................87
Important safety notes ....................84
Opening/closing (automatically
from inside) ...................................... 86 18
Index
Stowage compartment in the rear seat
armrest !
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
compartmen tbefore folding the rear seat
armrest back intot he seat backrest. X
To open: fold down seat armrest 0010.
X Fold cover 001Aof the armrest upwards.
Storage pockets G
WARNING
Storage bags are intended for storing light-
weight items only.
Heavy objects, objects with sharp edges or
fragile objects may not be transported in the
storage bag. In an accident, during hard
braking, or sudden maneuvers ,they could be
thrown around inside the vehicle and cause
injur ytov ehicle occupants.
Storage bags cannot protec ttransported
goods in the event of an accident.
The stowage pockets are on the back of the
driver's and front-passenger' sseats. Stowage nets
Stowage netsa re located in the front-
passenger footwell and on the right-hand side
of the trunk. Observe the loading guidelines (Y
page 278)
and the safety notes regarding stowage
spaces (Y page 278). Rear bench seat through-loading
feature
Important safet ynotes G
WARNING
If the rear bench seat/rear seat and seat
backrest are not engaged they could fold
forwards, e.g. when brakin gsuddenly or in the
event of an accident.
R The vehicle occupan twould 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 Objectsorl oads in the trunk 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 278).
The left-hand and right-hand rear seat
backrests can be folded down separately to
increase the trunk capacity.
Folding the seat backrest forward i
Vehicles with memory function: when you
fold one or both parts of the rear seat Stowage areas
281Stowage and features Z
001E
Alignment bolt
0025 Sheet for faulty wheel
0009 Tire inflation compressor
0016 Lugw rench
001D Fusealloc ation chart
X Ope nthe trunk lid.
X Lift the trunk floor upwards (Y page 283).Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
R MOExtended tires (tires with run-flat
properties) (Y page 321)
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
R an emergency spare wheel(Y page 367)
Information on changing/mounting awheel
(Y page 357).
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 167).
X If possible, bring the front wheels into the
straight-ahead position.
X Vehicles with AIRMATIC: make sure that
"normal" level is selected (Y page 189).
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 electronicsn ow have status
0.T his 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 147). 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 awheel 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 conditionsw hen 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
atotal loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognizeM OExtended 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 351).
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 pressurel oss warning message
appearsint he multifunction display:
R Observe the instructions in the display
messages (Y page 258).
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. Flat tire
321Breakdown assistance
Determining th
ecorrect loa dlimit
Step-by-step instructions The followin
gsteps have been develope das
required of all manufacturers under Title 49,
Code of U.S .Federal Regulations, Part 575
pursuant to the "National Traffic and Motor
Vehicle Safet yActof 1966".
X Step 1: Locatethe statement "The
combined weight of occupants and cargo
should never exceed XXX kg or XXX lbs." on
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 resultin gfigure equals the
available amount of cargo and luggage load
capacity. For example, if the "XXX" amount
equals 1400l bs and therewill be five
150 lbs passenger sinyour vehicle, the
amount of available cargo and luggage load
capacit yis6 50 lbs (1400 -750 (5 x150) =
650 lbs).
X Step 5: Determine the combined weight of
luggage and cargo being loaded on the
vehicle. Tha tweight may not safely exceed
the available cargo and luggage load
capacity calculated in step 4. Loading thev
ehicle
347Wheels and tires Z
Tire labeling
Overview 001A
Unifor mTire Qualit yGrading Standard
(Y page 355)
0010 DOT, Tire Identification Number
(Ypage 354)
0024 Maximum tir eload (Y page 353)
0021 Maximum tir epressure (Y page 340)
001E Manufacturer
0025 Tire material (Y page 354)
0009 Tire size designation ,load-bearing
capacity and speed index (Y page 351)
0016 Load index (Y page 353)
001D Tire name
The markings described above are on the tire
in additio ntothe tire name (sales
designation) and the manufacturer's name.
i Tire data is vehicle-specific and may
deviate from the data in the example.
Tire size designation, load-bearing
capacity and speed rating 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 arisk 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. 001A
Tire width
0010 Nominal aspect ratio in %
0024 Tire code
0021 Rim diameter
001E Load bearing index
0025 Speed rating
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 manufacturin gstandards.
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 width001Ashows the nominal
tire width in millimeters.
Aspect ratio: aspect ratio0010is the size ratio
between the tire height and tire width and is
shown in percent.T he aspect ratio is All about wheels and tires
351Wheels and tires Z
calculate
dbydividing the tire width by the tire
height.
Tire code: tire code0024specifies the tire type.
"R "r epresents radia ltires; "D" represents
diagona ltires; "B" represents diagona lradial
tires.
Optionally, tire switham aximum speed of
ove r149 mph (240 km/h )may have "ZR" in
the size description, depending on the
manufacturer (e.g. 245/40 ZR 18).
Rim diameter: rim diameter0021is the
diameter of the bea dseat, not the diameter
of the rim flange. The rim diameter is
specified in inche s(in).
Load-bearin gind ex: load-bearing index 001E
is an umerica lcode that specifies the
maximum load-bearing capacity of atire.
Do not overload the tire sbyexceedingthe
specified load limit. The maximum
permissibl eload can be found on the
vehicle's Tir eand Loadin gInformati on
placard on th eB-pillar on th edriver's side
(Y page 345).
Example:
Load-bearin gind ex 91 indicates amaximum
load of 1356 lb (61 5kg)that th etires can
bear .For further information on th emaximum
tir el oad in kilograms and lbs, see
(Y page 353).
For further informatio nontheload bearing
index ,see "Load index "(Ypage 353).
Speed rating: speedrating 0025specifie sthe
approved maximum spee dofthetire.
i Tire dat aisvehicle-specific and may
deviate from th edataint heexample.
Regardless of th espee drating ,always
observ ethe spee dlimits. Drive carefull yand
adapt your driving style to th etraffic
conditions.
Summer tires Index Speed rating
Q up to 10
0mph (16 0km/ h) R up to 10
6mph (17 0km/ h) Index Speed rating
S up to 11
2mph (18 0km/ h) T up to 11
8mph (19 0km/ h) H up to 13
0mph (21 0km/ h) V up to 14
9mph (24 0km/ h) W up to 16
8mph (27 0km/ h) Y up to 18
6mph (30 0km/ h) ZR...Y up to 18
6mph (30 0km/ h) ZR...(..Y) ove
r186 mph (30 0km/ h) ZR ove
r149 mph (24 0km/ h) R
Optionally, tires wit hamaximum spee dof
ove r149 mph (24 0km/ h) may have "ZR"
in th esized escription ,dependin gonthe
manufacturer (e.g. 245/40 ZR18).
The servic especificatio nismade up of
load-bearing index 001Eand speed rating
0025.
R If the size description of your tire includes
"ZR"a nd there are no service
specifications, ask the tire manufacturer in
order to find out the maximum speed.
If as ervice specification is available, the
maximum speed is limited according to the
speed rating in the service specification.
Example: 245/40Z R18 97Y.In this
example, "97 Y" is the service specification.
The letter "Y" represents the speed rating.
The maximum speed of the tire is limited to
186 mph (300 km/h).
R The size descriptio nfor all tires with
maximum speeds of over 186 mph
(300 km/h) must include "ZR", andthe
service specification must be given in
parentheses. Example:
275/40 ZR 18 (99 Y). Speed rating "(Y)"
indicates that the maximum speed of the
tire is over 186 mph (300 km/h) .Ask the
tire manufacturer about the maximum
speed. 352
All about wheelsa
nd tiresWheels and tires
100 kilopascals (kPa
)are the equivalent of
1b ar.
DOT (Department of Transportation)
DOT marked tires fulfill the requirements of
the United States Department of
Transportation.
Normal occupant weight
The numbe rofoccupants for which the
vehicl eisdesigned multiplie dby
68 kilograms (150 lb).
Uniform Tire Quality Gradin gStandards
Au niform standard to grade the quality of
tire swithr egards to trea dquali ty,tire traction
and temperatur echaracteristics. Rating sare
determine dbytire manufacturer susing U.S.
government testing procedures. The ratings
ar em olde dinto the sidewall of the tire.
Recommende dtire pressure
The recommende dtire pressure applie sto
the tire smounted at the factory.
The Tire and Loading Informatio nplacard
contain sthe recommende dtirep ressures for
cold tires on afully loaded vehicle and for the
maximum permissible vehicle speed.
The tir epressure table contain sthe
recommende dpressures for cold tires for
various operating conditions, i.e. differing
load and speed conditions.
Increased vehicle weight du etooptional
equipment
This is the combined weight of all standard
and optional equipmen tavailablef or the
vehicle, regardless of whethe ritisactually
installed on the vehicle or not.
Rim
This is the part of the wheel on which the tire
is mounted.
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.
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 drawbarn
oseweight, 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 afully 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.
Maximu mloaded vehicle weight
The maximum weight is th esum of:
R thec urbw eight of th evehicle
R thew eight of th eaccessories
R thel oad limit
R thew eight of th efactory installe doptional
equipment
Kilopascal (kPa)
Metric unit for tir epressure. 6. 9kPa
correspond sto1psi. Another unit for tire
pressure is bar. Ther eare 10 0kilopascals
(kPa) to 1bar.
Load index
In addition to th eload-bearing index ,the load
index may also be imprinted on th esidewall
of th etire. This specifie sthe load-bearing
capacity more precisely. All about wheels and tires
355Wheels and tires Z
Cur
bw eight
The weight of avehicle with standard
equipment includin gthe maximum capacity
of fuel, oil and coolant .Italso includes the air-
conditionin gsystem and optional equipment
if these are installed in the vehicle, but does
not include passengers or luggage.
Maximu mload rating
The maximum tir eload is the maximum
permissible weight in kilograms or lbs for
which atireisa pproved.
Maximu mpermissible tir epressure
Maximum permissible tir epressure for one
tire.
Maximu mload on one tire
Maximum load on one tire. This is calculated
by dividin gthe maximum axle load of one axle
by two.
PSI (pounds per squar einch)
As tandar dunitofm easure for tire pressure.
Aspect ratio
Relationship between tire height and tire
width in percent.
Tirep ressure
This is pressure inside the tire applying an
outward forc etoeach 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.
Cold tirep ressure
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 been driven for less than
1m ile (1.6 km). Tread
The part of the tire that comes intoc
ontact
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 preven tthe tire from
comin gloose 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 kilograms (5 lbs).
These optional extras, such as high-
performance brakes, level control, aroof rack
or ah igh-performanc ebattery, are not
included in the curb weight and the weight of
the accessories.
TIN (Tire Identification Number)
This is aunique identifier which can be used
by atire manufacturer to identify tires, for
example for aproduct 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 atire.
Traction
Traction is the result of friction between the
tires and the road surface.
Treadwear indicators
Narrow bars (tread wear bars) that are
distributed over the tire tread. If the tire tread
is level with the bars, the wear limit of 0014in
(1.6 mm) has been reached. 356
All about wheels and tiresWheels and tires