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Using the steering wheel buttons
XTurn the SmartKey to position2in the ignition
lock.
XPress the VorU button repeatedly
until the standard display is shown
(
Ypage 167).
XPress the 9or: button repeatedly
until the current pressure of the individual
tires is shown in the display.
If the vehicle is parked for longer than
20 minutes or you then drive at less than 18 mph
(30 km/h), the Tire pres. displayed
after driving for several minutesmes-
sage appears.
iThe tire pressure value shown in the display
may differ from those measured at a gas sta-
tion using a pressure gage. The on-board
computer will generally give you a more exact
value.
Tire pressure loss warning system
Vehicles with steering wheel buttons
If the tire pressure monitor detects a pressure
loss in one or more tires, the on-board computer
displays the yellow Tire
pres.Adjustpres.warning message. The htire pressure loss
warning lamp in the instrument cluster
(
Ypage 202) flashes for about 60 seconds and
then remains lit.
The pressure of the affected tire is highlighted in
yellow in the on-board computer (
Ypage 176).
If the tire pressure monitor detects a significant
pressure loss in one or more tires, the on-board
computer displays the red Tire pres.
Warn‐ingTiredefectwarning message. Theh
tire pressure loss warning lamp in the instru-
ment cluster (
Ypage 202) flashes for about 60
seconds and then remains lit. An additional
warning tone sounds.
The pressure of the affected tire is highlighted in
yellow in the on-board computer (
Ypage 176).
Restarting the tire pressure monitor
When you restart the tire pressure monitor, the
currently set tire pressure are taken as refer-
ence values for monitoring. In most cases, the tire pressure monitor detects
the new reference values automatically, e.g.
after you have:
Rchanged the tire pressure
Rchanged wheels or tires
Rinstalled new wheels or tires
However, you can also define reference values
manually as described here.
Before restarting the tire pressure monitor:
XSet the tire pressure to the value recommen- ded on the Tire and Loading Information plac-
ard or the tire pressure table on the B-pillar on
the driver's side (
Ypage 250).
Observe the notes on tire pressure when
doing so (
Ypage 250).
XMake sure that the tire pressure is correct on
all four wheels.
Restarting the tire pressure monitor (vehi-
cles without steering wheel buttons):
XTurn the SmartKey to position 2in the ignition
lock.
XPress the 4menu button on the instrument
cluster repeatedly until the display shows the
following message:
+CAL- TPMS
XPress the fbutton on the instrument clus-
ter.
The display shows:
OK TPMS
The tire pressure monitor activation process
has begun. The tire pressures measured for
the individual wheels are stored as the new
reference values, provided that the tire pres-
sure monitor considers them to be plausible.
If you wish to cancel the restart:
XPress the gbutton or the 4menu button on
the instrument cluster.
The activation process is canceled automati-
cally if 30 seconds elapse without input.
Restarting the tire pressure monitor (vehi-
cles with steering wheel buttons):
XTurn the key to position 2in the ignition lock.
XPress the VorU button on the steering
wheel until the standard display (Ypage 167)
appears in the display.
XPress the 9or: button on the steering
wheel repeatedly until the current pressure of
Tire pressure255
Wheels and tires
Z
Page 258 of 290
the individual tires is displayed or the display
shows the following message:
Tire pres. displayed after driving
for several minutes
XPress the9reset button on the instrument
cluster.
The display shows the following message:
Monitor current tire pressure?
XPress the Wbutton on the steering wheel.
The display shows the following message:
Tire pres. monitor reactivated
The tire pressure monitor activation process
has begun. The tire pressures measured for
the individual wheels are stored as the new
reference values, provided that the tire pres-
sure monitor considers them to be plausible.
If you wish to cancel the restart:
XPress the Xbutton on the steering wheel.
256Tire pressure
Wheels and tires
Page 259 of 290

Tire pressure table
Front axle tire pressure values:the following tire pressure values only apply to vehicles with a
permissible front axle load of 3970 lbs (1801 kg), 4080 lbs (1851 kg) or 4410 lbs (2000 kg).
Tires/disc wheelFront axle load
3970 lbs
(1801 kg)4080 lbs
(1851 kg)4410 lbs
(2000 kg)
205/75 R 16 C 110/108R
6.5Jx16 ET626—400 kPa
(4.0 bar/58 psi)420 kPa
(4.2 bar/61 psi)
LT 215/85 R 16 115/112N
5.5Jx16
Half distance between centers: 4.94 in
(125.5 mm)—380 kPa
(3.8 bar/55 psi)420 kPa
(4.2 bar/61 psi)
LT 215/85 R 16 115/112Q
5.5Jx16
Half distance between centers: 4.94 in
(125.5 mm)—380 kPa
(3.8 bar/55 psi)420 kPa
(4.2 bar/61 psi)
LT 245/75 R 16 120/116N
6.5J x 16
Wheel offset: 2.13 in (54 mm)320 kPa
(3.2 bar/47 psi)——
235/65 R 16 C 121N (118 R)
6.5J x 16
Spare wheel for vehicles with
Super Single tires—380 kPa
(3.8 bar/55 psi)420 kPa
(4.2 bar/61 psi)
Rear axle tire pressure values: the following tire pressure values only apply to vehicles with a
permissible rear axle load of 5360 lbs (2431 kg), 7060 lbs (3202 kg) or 7720 lbs (3502 kg).
Tires/disc wheelRear axle load
5360 lbs
(2431 kg)7060 lbs
(3202 kg)7720 lbs
(3502 kg)
LT 215/85 R 16 115/112N
5.5Jx16
Half distance between centers: 4.94 in
(125.5 mm)—380 kPa
(3.8 bar/55 psi)420 kPa
(4.2 bar/61 psi)
LT 215/85 R 16 115/112Q
5.5Jx16
Half distance between centers: 4.94 in
(125.5 mm)—380 kPa
(3.8 bar/55 psi)420 kPa
(4.2 bar/61 psi)
LT 245/75 R 16 120/116N
6.5J x 16
Wheel offset: 2.13 in (54 mm)480 kPa
(4.8 bar/70 psi)——
6Vehicles with Super Single tires
Tire pressure257
Wheels and tires
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Tires/disc wheelRear axle load
5360 lbs
(2431 kg)7060 lbs
(3202 kg)7720 lbs
(3502 kg)
285/65 R 16 C 128/126N (121 R)
285/65 R 16 C 128/126 N (123 R)7
8.5J x 16 ET 63
—450 kPa
(4.5 bar/65 psi)—
235/65 R 16 C 121N (118 R)
6.5J x 16
Spare wheel for vehicles with
Super Single tires—520 kPa
(5.2 bar/75 psi)—
Loading the vehicle
Instruction labels for tires and loads
GWARNING
Overloaded tires can overheat, causing a
blowout. Overloaded tires can also impair the steering and driving characteristics and lead
to brake failure. There is a risk of accident.
Observe the load rating of the tires. The load
rating must be at least half of the GAWR of
your vehicle. Never overload the tires by
exceeding the maximum load.
The Tire and Loading Information placard on the
driver’s door B-pillar
Two instruction labels on your vehicle show themaximum possible load.
(1) Only for vehicles with a gross weight of less than 10,000 lbs (4,536 kg):
Tire and Loading Information placard :is
on the B-pillar on the driver's side. Tire and Loading Information placard
:shows the
permissible number of occupants and the
maximum permissible load of the vehicle. It
also contains details of the tire sizes and
corresponding pressures for tires mounted
at the factory.
(2) The vehicle identification plate is located on the base of the driver's seat. The vehicle
identification plate informs you of the gross
vehicle weight rating. It is made up of the
vehicle weight, all vehicle occupants, the
fuel and the cargo. You can also find infor-
mation about the maximum Gross Axle
Weight Rating on the front and rear axle.
The maximum gross axle weight rating is
the maximum weight that can be carried by
one axle (front or rear axle). Do not exceed
the maximum gross vehicle weight or the
maximum gross axle weight rating for the
front or rear axle.
Tire and Loading Information placard
General notes
Only vehicles with a gross weight of less than
10,000 lbs (4,536 kg) have a Tire and Loading
Information placard on the B-pillar on the driv-
er's side.
7Super Single tires.
258Loading the vehicle
Wheels and tires
Page 261 of 290

Maximum permissible gross vehicle
weight rating
:Maximum number of seats
;Maximum permissible gross vehicle weight
rating
XSpecification for maximum gross vehicle
weight;is listed in the Tire and Loading
Information placard: "The gross weight of
occupants and luggage must not exceed XXX
kilograms or XXX lbs."
The gross weight of all vehicle occupants, cargo,
luggage and trailer load/noseweight (if applica-
ble) must not exceed the specified value.
iThe details on the Tire and Loading Infor-
mation placard illustration are only an exam-
ple. The maximum permissible gross vehicle
weight rating is vehicle-specific and may dif-
fer from that which is illustrated. You can find
the valid maximum permissible gross vehicle
weight rating for your vehicle on the Tire and
Loading Information placard.
Number of seats
:Maximum number of seats
;Maximum permissible gross vehicle weight
rating Maximum number of seats
:determines the
maximum number of occupants allowed to
travel in the vehicle. This information can be
found on the Tire and Loading Information plac-
ard.
iThe details on the Tire and Loading Infor-
mation placard illustration are only an exam-
ple. The number of seats is vehicle-specific
and can differ from the details shown. The
number of seats in your vehicle can be found
on the Tire and Loading Information placard.
Determining the maximum load
Individual steps
The following steps have been developed as
required of all manufacturers under Title 49,
Code of U.S. Federal Regulations, Part 575 in
accordance with the "National Traffic and Motor
Vehicle Safety Act of 1966".
XStep 1: Locate the 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.
XStep 2: Determine the combined weight of
the driver and passengers that will be travel-
ing in your vehicle.
XStep 3: Subtract the combined weight of the
driver and passengers from XXX kilograms or
XXX lbs.
XStep 4: The resulting figure equals the avail-
able amount of cargo and luggage load capa- city. For example, if the "XXX" amount equals
1400 lbs and there will be five 150 pound
passengers in your vehicle, the amount of
available cargo and luggage load capacity is
650 lbs (1400 Ò750 (5 x 150) = 650 lbs).
XStep 5: Determine the combined weight of
luggage and cargo being loaded on the vehi-
cle. For reasons of safety, that weight must
not exceed the available cargo and luggage
cargo capacity calculated in step 4.
XStep 6 (if applicable): If you intend to tow a
trailer behind your vehicle, the load on the
trailer is transferred to your vehicle. Please
consult the Tire and Loading Information plac-
ard, to determine how this reduces the avail-
able cargo and luggage load capacity of your
vehicle.
Loading the vehicle259
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Example: Steps 1 to 3
The following table shows examples of how to calculate total load and cargo capacities with varyingseating configurations and number and size of occupants. The following examples use a maximum
load of 1500 lbs (680 kg). This is for illustration purposes only. Make sure you are using the
actual load limit for your vehicle stated on your vehicle's Tire and Loading Information placard .
Example 1Example 2Example 3
Step 1Combined maximum
weight of occupants
and cargo (data from
the Tire and Loading
Information placard)1500 lbs
(680 kg)1500 lbs
(680 kg)1500 lbs
(680 kg)
Example 1Example 2Example 3
Step 2Number of people in
the vehicle (driver and
occupants)531
Distribution of the
occupantsFront: 2
Rear: 3Front: 1
Rear: 2Front: 1
Weight of the occu-
pantsOccupant 1:
150 lbs (68 kg)
Occupant 2:
180 lbs (82 kg)
Occupant 3:
160 lbs (73 kg)
Occupant 4:
140 lbs (63 kg)
Occupant 5:
120 lbs (54 kg)Occupant 1:
200 lbs (91 kg)
Occupant 2:
190 lbs (86 kg)
Occupant 3:
150 lbs (68 kg)Occupant 1:
150 lbs (68 kg)
Gross weight of all
occupants750 lbs (340 kg)540 lbs (245 kg)150 lbs (68 kg)
Example 1Example 2Example 3
Step 3Permissible cargo and
trailer load/nose-
weight (maximum
gross vehicle weight
rating from the Tire
and Loading Informa-
tion placard minus the
gross weight of all
occupants)1500 lbs
(680 kg) Ò750 lbs
(340 kg) =
750 lbs (340 kg)1500 lbs
(680 kg) Ò540 lbs
(245 kg) =
960 lbs (435 kg)1500 lbs
(680 kg) Ò150 lbs
(68 kg) =
1350 lbs
(612 kg)
The greater the combined weight of the occupants, the lower the maximum luggage load.
Further information can be found under "Towing a trailer" (
Ypage 159).
260Loading the vehicle
Wheels and tires
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Vehicle identification plate
Even if you have calculated the total cargo care-
fully, you should still make sure that the gross
vehicle weight rating and the gross axle weight
rating are not exceeded. Details about this can
be found on the vehicle identification plate on
the driver seat frame of your vehicle
(
Ypage 276).
Gross vehicle weight: the gross weight of the
vehicle, all passengers, cargo and trailer load/
noseweight (if applicable) must not exceed the
permissible gross vehicle weight.
Gross axle weight rating: the maximum per-
missible load that can be carried by one axle
(front or rear axle).
To ensure that your vehicle does not exceed the
maximum permissible values (gross vehicle
weight and maximum gross axle weight rating),
have your loaded vehicle (including driver, occu-
pants, cargo, and full trailer load if applicable)
weighed on a suitable vehicle weighbridge.
Trailer load/noseweight
The trailer load/noseweight affects the gross
weight of the vehicle. If a trailer is attached, the
trailer load/noseweight is included in the load
along with occupants and luggage. The trailer
load/noseweight is usually approximately 10%
of the gross weight of the trailer and its load.
What you should know about wheels
and tires
Tire labeling
Overview
:DOT, Tire Identification Number
(Ypage 263)
;Maximum tire load (Ypage 263)
=Maximum tire pressure (Ypage 252)
?Manufacturer
ATire material (Ypage 264)
BTire size designation, load-bearing capacity
and speed index (Ypage 261)
CTire name
The markings described above are on the tire in addition to the tire name (sales designation) and
the manufacturer's name.
iTire data is vehicle-specific and may deviate
from the data in the example.
Tire size designation, load bearing index
and speed index
GWARNING
Exceeding the stated tire load-bearing capa-
city 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
What you should know about wheels and tires261
Wheels and tires
Z
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tire load rating and speed rating required for
your vehicle.
:Design standard
;Tire width
=Nominal aspect ratio in %
?Tire code
ARim diameter
BLoad bearing index
CSpeed index
General: depending on the manufacturer's
standards, the size imprinted in the tire wall may
not contain any letters or may contain one let-
ter :that precedes the size description
If "LT" precedes the size description (as shown
above): these are light truck tires according to
U.S. manufacturing standards.
If "C" precedes the size description: these are
commercial motor vehicle tires according to
European manufacturing standards.
Tire width: tire width;shows the nominal tire
width in millimeters.
Aspect ratio: aspect ratio=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?specifies the tire type.
"R" represents radial tires. "D" represents diag-
onal tires, "B" represents diagonal radial tires.
Rim diameter: rim diameterAis 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 indexBis a
numerical code tha t s
pecifies 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 (
Ypage 258).
Example:
The load-bearing index 120 indicates a maxi-
mum load of 3,042 lb (1,380 kg) for the tire. If
two load-bearing capacity indices are specified
(as shown above), the first number states the
load-bearing capacity for single tires, the sec-
ond number the load-bearing capacity for twin
tires. For further information on the maximum
tire load in kilograms and pounds, see
(
Ypage 263).
For further information on the load-bearing
index, see "Load index" (
Ypage 263).
Speed rating: speed ratingCspecifies the
approved maximum speed of the tire.
Regardless of the speed index always observe
the speed limits. Drive carefully and adapt your
driving style to the traffic conditions.
iTire data is vehicle-specific and may deviate
from the data in the example.
IndexSpeed rating
Fup to 50 mph (80 km/h)
Gup to 56 mph (90 km/h)
Jup to 62 mph (100 km/h)
Kup to 68 mph (110 km/h)
Lup to 74 mph (120 km/h)
Mup to 80 mph (130 km/h)
Nup to 87 mph (140 km/h)
Pup to 93 mph (150 km/h)
Qup to 100 mph (160 km/h)
Rover 106 mph (170 km/h)
iNot all tires that have the M+S identification
offer the driving characteristics of winter
tires. In addition to the M+S marking, winter
tires also have the isnowflake symbol on
the tire wall. Tires with this marking fulfill the
requirements of the Rubber Manufacturers
Association (RMA) and the Rubber Associa-
tion of Canada (RAC) regarding the tire trac-
tion on snow. They have been especially
developed for driving on snow.
262What you should know about wheels and tires
Wheels and tires