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flated tire causes the tire to overheat and canlead to tire failure. Underinflation also
reduces fuel efficiency and tire tread life, and
may affect the vehicle's handling and stop-
ping ability.
Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the driv-
er's responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
USA only:
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate if the
system is not operating properly. The TPMS
malfunction indicator is combined with the
low tire pressure telltale. When the system
detects a malfunction, the warning lamp will
flash for approximately a minute and then
remain continuously illuminated. This
sequence will be repeated every time the vehi-
cle is started as long as the malfunction
exists.
When the malfunction indicator is illuminated,
the system may not be able to detect or signal
low tire pressure as intended. TPMS malfunc-
tions may occur for a variety of reasons,
including the mounting of incompatible
replacement or alternate tires or wheels on
the vehicle that prevent the TPMS from func-
tioning properly. Always check the TPMS mal-
function telltale after replacing one or more
tires or wheels on your vehicle to ensure that
the replacement or alternate tires and wheels
allow the TPMS to continue to function prop-
erly.
Vehicles with a tire pressure monitor are equip-
ped with sensors in the wheels that monitor the
tire pressure of all four tires. The tire pressure
monitor monitors the pressure in all four tires;
you set this pressure when you activate the tire pressure monitor. The tire pressure monitor
warns you when the pressure drops in one or
more of the ti
res. The tire pressure monitor only
functions if the corresponding sensors are
installed on all wheels. You should always adjust the tire pressure
according to the vehicle load. Restart the tire
pressure monitor if you change the tire pres-
sure.
The tire pressure monitor does not warn you if a
tire pressure is incorrect. Observe the notes on the recommended tire pressure (
Ypage 251).
The tire pressure monitor is not able to warn you
of a sudden loss of pressure, e.g. following pen- etration by a foreign object. In this event, brake
the vehicle until it comes to a standstill. Do not
carry out any sudden steering maneuvers.
The tire pressure monitor has a yellow h
warning lamp in the instrument cluster for indi-
cating pressure loss/malfunctions (USA) or
pressure loss (Canada). Depending on how the
warning lamp flashes or lights up, an underin-
flated tire or a malfunction in the tire pressure
monitor is displayed:
Rif the h warning lamp is lit continuously,
the tire pressure on one or more tires is sig-
nificantly too low. The tire pressure monitor is
not malfunctioning.
RUSA only: if the hwarning lamp flashes for
60 seconds and then remains lit constantly,
the tire pressure monitor is malfunctioning.
Only vehicles with steering wheel buttons: the
on-board computer displays information on tire
pressure. After a few minutes of driving, the cur-
rent tire pressure of each tire is shown in the on-
board computer.
USA only: if the tire pressure monitor is mal-
functioning, it may be more than 10 minutes
before the malfunction is shown. The htire
pressure warning lamp flashes for 60 seconds
and then remains lit. When the malfunction has been rectified, the htire pressure warning
lam p goes ou
t after a few minutes of driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at a gas station with a pressure gauge. The
tire pressures shown by the on-board computer
refer to those measured at sea level. At high
altitudes, the tire pressure values indicated by a pressure gauge are higher than those shown by
the on-board computer. In this case, do not
reduce the tire pressures.
If radio transmitting equipment (e.g. wireless
headphones, two-way radios) is operated inside
the vehicle or in the vicinity of the vehicle, this
can interfere with the operation of the tire pres-
sure monitor.
Tire pressure255
Wheels and tires
Z
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Checking the tire pressure electroni-
cally (vehicles with steering wheel but-
tons)
Tire pressuredisplay
Using the steering wheel buttons
XTurn the key to position 2in the ignition lock.
XPress the VorU button repeatedly
until the standard display is shown
(
Ypage 166).
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 gauge. 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 tire pressure of the affected wheel is high-
lighted in yellow in the on-board computer.
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 tire pressure of the affected wheel is high-
lighted in yellow in the on-board computer.
Restarting the tire pressure monitor
When you restart the tire pressure monitor, the
currently set tire pressures 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 251).
Observe the notes on tire pressure when
doing so (
Ypage 251).
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 key 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 pressure measured for the individual wheels are stored as the new ref-
erence values, provided that the tire pressure
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.
256Tire pressure
Wheels and tires
Page 259 of 294

Restarting the tire pressure monitor (vehi-
cles with steering wheel buttons):
XTurn the key to position2in the ignition lock.
XPress the VorU button on the steering
wheel until the standard display (Ypage 166)
appears in the display.
XPress the 9or: button on the steering
wheel repeatedly until the current pressure of
the individual tires is displayed or the display
shows the following message:
Tire pres. displayed after driving
for several minutes
XPress the 9reset 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 pressure measured for the individual wheels are stored as the new ref-
erence values, provided that the tire pressure
monitor considers them to be plausible.
If you wish to cancel the restart:
XPress the Xbutton on the steering wheel.
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 lb s(1801 kg), 4080 lbs (1851 kg), 4100 lbs (1860 kg) or 4410 lbs
(2000 kg).
Tires/disc wheelFront axle load
3970 lbs
(1801 kg) 4100 lbs
(1860 kg)4080 lbs
(1851 kg)4410 lbs
(2000 kg)
205/75 R 16 C 110/108R
6.5J x 16 ET 626—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)340 kPa
(3.4 bar/49 psi)——
6Vehicles with Super Single tires.
Tire pressure257
Wheels and tires
Z
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Tires/disc wheelFront axle load
3970 lbs
(1801 kg) 4100 lbs
(1860 kg)4080 lbs
(1851 kg)4410 lbs
(2000 kg)
LT 245/75 R 16 120/116Q
6.5J x 16
Wheel offset: 2.13 in (54 mm)340 kPa
(3.4 bar/49 psi)——
235/65 R 16 C 121N (118R)
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 ba r/70 psi)——
285/65 R16 C128/126N (121R)
285/65 R16 C128/12 6 N(123 R)7
8.5J x 16 ET 63
—450 kPa
(4.5 bar/65 psi)—
235/65 R 16 C 121N (118R)
6.5J x 16
Spare wheel for vehicles with
Super Single tires—520 kPa
(5.2 bar/75 psi)—
7Super Single tires.
258Tire pressure
Wheels and tires
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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.
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.
Loading the vehicle259
Wheels and tires
Z
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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.
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 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)
260Loading the vehicle
Wheels and tires
Page 263 of 294

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 158).
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.
Loading the vehicle261
Wheels and tires
Z
Page 264 of 294

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 264)
;Maximum tire load (Ypage 264)
=Maximum tire pressure (Ypage 254)
?Manufacturer
ATire material (Ypage 264)
BTire size designation, load-bearing capacity
and speed index (Ypage 262)
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
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.
262What you should know about wheels and tires
Wheels and tires