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lamp in the instrument cluster (Y
page 229)
lights up.
The tire pressure is shown in 2 red rectangles.
The pressure of the tire concerned is shown
in one of the two rectangles (Y page 199).
Additionally, a warning tone sounds.
Each tire that is affected by a significant loss
of pressure is highlighted in the pressure dis-
play.
Restarting the tire pressure monitor When you restart the tire pressure monitor,
the currently set tire pressure are taken as
reference values for monitoring.
In most cases, the tire pressure monitor
detects the new reference values automati-
cally, e.g. after you have:
R changed the tire pressure
R mounted
R mounted new wheels or tires
However, you can also define reference val-
ues manually as described here.
Before restarting the tire pressure moni-
tor:
X Set the tire pressure to the value recom-
mended on the Tire and Loading Informa-
tion placard or the tire pressure table on
the B-pillar on the driver's side
(Y page 290).
Observe the notes on tire pressure when
doing so (Y page 290).
X Make sure that the tire pressure is correct
on all four wheels. Restarting the tire pressure monitor
(vehicles without steering wheel but-
tons):
X
Turn the key to position 2in the ignition
lock.
X Press the 0079menu button on the instru-
ment cluster repeatedly until the display
shows the following message:
+CAL- TPMS
+CAL- TPMS
X Press the 0074button on the instrument clus-
ter.
The display shows:
OK TPMS OK TPMS
The tire pressure monitor activation proc-
ess has begun. The tire pressures meas-
ured for the individual wheels are stored as
the new reference values, provided that the
tire pressure monitor considers them to be
plausible.
If you wish to cancel the restart:
X Press the 0075button or the 0079menu button
on the instrument cluster.
The activation process is canceled auto-
matically if 30 seconds elapse without
input.
Restarting the tire pressure monitor
(vehicles with steering wheel buttons):
X Turn the key to position 2in the ignition
lock.
X Press the 0080or007F button on the steer-
ing wheel repeatedly until the standard dis-
play is shown ( Ypage 189).
X Press the 0041or0068 button on the steer-
ing wheel repeatedly until the current pres-
sure of the individual tires is displayed or
the display shows the following message:
Tire Tire pres.
pres. displayed
displayed after
afterdriving
driving
for several minutes
for several minutes
X Press the 0045reset button on the instru-
ment cluster.
The display shows the following message: Tire pressure
295Wheels and tires Z
Page 298 of 338
Monitor current tire pressure?
Monitor current tire pressure?
X Press the 0081button on the steering
wheel.
The display shows the following message:
Tire pres. monitor reactivated Tire pres. monitor reactivated
The tire pressure monitor activation proc-
ess has begun. The tire pressures meas-
ured for the individual wheels are stored as
the new reference values, provided that the
tire pressure monitor considers them to be
plausible.
If you wish to cancel the restart:
X Press the 0082button on the steering
wheel. 296
Tire pressureWheels and tires
Page 299 of 338

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 wheel Front axle load
3970 lbs
(1801 kg) 4080 lbs
(1851 kg) 4410 lbs
(2000 kg) LT 215/85 R 16 115/ 112N
5.5Jx16
Half distance between centers:
4.82 in (122.5 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:
4.82 in (122.5 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) — —
Rear axle tire pressure values:
the following tire pressure values only apply to vehicles with
a permissible rear axle load of 5360 lb s (2431 kg), 7060 lbs (3202 kg) or 7720 lbs (3502 kg). Tires/disc wheel Rear 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:
4.82 in (122.5 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:
4.82 in (122.5 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) — —Tire pressure
297Wheels and tires Z
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Loading the vehicle
Instruction labels for tires and loads
G
WARNING
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
the maximum possible load.
(1) Only for vehicles with a gross weight of
less than 10,000 lbs (4,536 kg):
Tire and Loading Information placard 0043
is on the B-pillar on the driver's side. Tire
and Loading Information placard 0043
shows the permissible number of occu-
pants and the maximum permissible load
of the vehicle. It also contains details of
the tire sizes and corresponding pres-
sures for tires mounted at the factory.
(2) The vehicle identification plate is located on the base of the driver's seat. The vehi-
cle identification plate informs you of the
gross vehicle weight rating. It is made up
of the vehicle weight, all vehicle occu-
pants, the fuel and the cargo. You can
also find information 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
driver's side.
Maximum permissible gross vehicle
weight rating
0043
Maximum number of seats
0044 Maximum permissible gross vehicle
weight rating
X Specification for maximum gross vehicle
weight 0044is 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
applicable) must not exceed the specified
value.
i The details on the Tire and Loading Infor-
mation placard illustration are only an 298
Loading the vehicleWheels and tires
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example. The maximum permissible gross
vehicle weight rating is vehicle-specific and
may differ from that which is illustrated.
You can find the valid maximum permissi-
ble gross vehicle weight rating for your
vehicle on the Tire and Loading Information
placard.
Number of seats 0043
Maximum number of seats
0044 Maximum permissible gross vehicle
weight rating
Maximum number of seats 0043determines the
maximum number of occupants allowed to
travel in the vehicle. This information can be
found on the Tire and Loading Information
placard.
i The details on the Tire and Loading Infor-
mation placard illustration are only an
example. 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 Infor-
mation 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".
X Step 1: Locate the statement "The com-
bined 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 trav-
eling in your vehicle.
X Step 3: Subtract the combined weight of
the driver and passengers from XXX kilo-
grams 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 pound passengers in your vehicle, the
amount of available cargo and luggage load
capacity is 650 lbs (1400 00F8750 (5 x 150) =
650 lbs).
X Step 5: Determine the combined weight of
luggage and cargo being loaded on the
vehicle. For reasons of safety, that weight
must not exceed the available cargo and
luggage cargo capacity calculated in step
4.
X Step 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
placard, to determine how this reduces the
available cargo and luggage load capacity
of your vehicle. Loading the vehicle
299Wheels and tires Z
Page 302 of 338

Example: Steps 1 to 3
The following table shows examples of how to calculate total load and cargo capacities with
varying seating 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 Infor-
mation placard . Example 1 Example 2 Example 3
Step 1 Combined 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 1 Example 2 Example 3
Step 2 Number of people in
the vehicle (driver
and occupants)
5 3 1
Distribution of the
occupants
Front: 2
Rear: 3 Front: 1
Rear: 2 Front: 1
Weight of the occu-
pants
Occupant 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
occupants
750 lbs (340 kg) 540 lbs (245 kg) 150 lbs (68 kg)300
Loading the vehicleWheels and tires
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Example 1 Example 2 Example 3
Step 3 Permissible cargo
and trailer load/
noseweight (maxi-
mum gross vehicle
weight rating from
the Tire and Loading
Information placard
minus the gross
weight of all occu-
pants)
1500 lbs
(680 kg)
00F8750 lbs
(340 kg) =
750 lbs (340 kg) 1500 lbs
(680 kg)
00F8540 lbs
(245 kg) =
960 lbs (435 kg) 1500 lbs
(680 kg)
00F8150 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" (Y
page 178).Vehicle identification plate
Even if you have calculated the total cargo
carefully, 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
(Y page 319).
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 vehi-
cle weight and maximum gross axle weight
rating), have your loaded vehicle (including
driver, occupants, 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 approx-
imately 10
%of the gross weight of the trailer
and its load. What you should know about wheels
and tires
Tire labeling
Overview 0043
DOT, Tire Identification Number
(Ypage 304)
0044 Maximum tire load (Y page 303) What you should know about wheels and tires
301Wheels and tires Z
Page 304 of 338

0087
Maximum tire pressure (Y page 292)
0085 Manufacturer
0083 Tire material (Y page 304)
0084 Tire size designation, load-bearing capa-
city and speed index (Y page 302)
006B Tire name
The markings described above are on the tire
in addition to the tire name (sales designa-
tion) and the manufacturer's name.
i Tire data is vehicle-specific and may devi-
ate from the data in the example.
Tire size designation, load bearing index
and speed index G
WARNING
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
tire load rating and speed rating required for
your vehicle. 0043
Design standard
0044 Tire width
0087 Nominal aspect ratio in %
0085 Tire code
0083 Rim diameter
0084 Load bearing index
006B Speed index General:
depending on the manufacturer's
standards, the size imprinted in the tire wall
may not contain any letters or may contain
one letter 0043that precedes the size descrip-
tion
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 width0044shows the nominal
tire width in millimeters.
Aspect ratio: aspect ratio0087is the size ratio
between the tire height and tire width and is
shown in percent. The aspect ratio is calcu-
lated by dividing the tire width by the tire
height.
Tire code: tire code0085specifies the tire type.
"R" represents radial tires. "D" represents
diagonal tires, "B" represents diagonal radial
tires.
Rim diameter: rim diameter0083is the diam-
eter of the bead seat, not the diameter of the
rim flange. The rim diameter is specified in
inches (in).
Load-bearing index: load-bearing index0084
is a numerical code that specifies the maxi-
mum load-bearing capacity of a tire.
Do not overload the tires by exceeding the
specified load limit. The maximum permissi-
ble load can be found on the vehicle's Tire and
Loading Information placard on the B-pillar on
the driver's side (Y page 298).
Example:
The load-bearing index 120 indicates a max-
imum load of 3,042 lb (1,380 kg) for the tire.
If two load-bearing capacity indices are speci-
fied (as shown above), the first number states
the load-bearing capacity for single tires, the
second number the load-bearing capacity for
twin tires. For further information on the max-
imum tire load in kilograms and pounds, see
(Y page 303). 302
What you should know about wheels and tiresWheels and tires