Page 249 of 286

There is a risk of an accident.
Follow recommended tire inflation pressures
and check the pressure of all the tires includ-
ing the spare wheel:
Rmonthly, at least
Rif the load changes
Rbefore beginning a long journey
Runder different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
iThe specifications shown on the sample Tire
and Loading Information placard and tire
pressure plate are examples. Tire pressure
data are vehicle-specific and may deviate
from the data illustrated here. The tire pres-
sure data applicable to your vehicle can be
found on the Tire and Loading Information
placard or tire pressure plate of your vehicle.
HEnvironmental note
Check the tire pressure regularly, at least
every 14 days.
General notes
You will find information on tire pressure for the
vehicle's factory-mounted tires on the plates
described here.
The recommended tire pressure can be found
on the Tire and Loading Information placard
4or
the tire pressure table on the B-pillar on the
driver's side of your vehicle.
Further information on tire pressure can be
obtained at a qualified specialist workshop.
Tire and Loading Information placard
Example: Tire and Loading Information placard4
The Tire and Loading Information placard is on
the B-pillar on the driver's side of the vehicle
(
Ypage 254).
The Tire and Loading Information placard con-
tains recommended tire pressures :for cold
tires. Recommended tire pressures :are valid
for the maximum permissible load and up to the
maximum permissible speed of the vehicle.
Tire pressure plate
Example: tire pressure table
The tire pressure plate is located on the B-pillar
on the driver's side of the vehicle (Ypage 254).
The tire pressure table contains recommended
tire pressures for cold tires. Recommended tire pressures are valid for the maximum permissi-
ble load and up to the maximum permissible
speed of the vehicle.
4Only for vehicles with a gross vehicle weight of less than 10,000 lbs (4,536 kg)
Tire pressure247
Wheels and tires
Z
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Important notes on tire pressure
GWARNING
If th etire pressur edrops repeatedly, th e
wheel, valv eor tire may be damaged. Tir e
pressur ethat is to olow may result in atire
blow-out .Ther eis aris kof an accident.
RChec kth etire for foreign objects .
RCheckwhether th ewhee lis losing air or th e
valv eis leaking .
If you are unable to rectify th edamage, con-
tac t a qualified specialist workshop.
Use asuitable pressur egage to chec kth etire
pressure. The outer appearanc eof atire does
no tpermit any reliable conclusio nabout th etire
pressure. On vehicles equipped wit hth eelec -
tronic tire pressur emonitor, th etire pressur e
can be checke dusin gth eon-board computer.
The tire temperature and pressur eincreas e
when th evehicl eis in motion .This is dependen t
on th edriving spee dand th eload.
Therefore, you should only correc ttire pressur e
when th etires are cold.
The tires are cold:
Rif th evehicl ehas been parked for at least
three hour swithout direct sunligh ton th e
tires ,and
Rif th evehicl ehas no tbeen driven further than
1 mile (1.6 km )
Tire temper ature changes depending on the
ambient temperature, driving speed and tire
load. If the tire temperature changes by 18 ‡
(10 †), the tire pressure ch anges by approx
-
imately 10 kPa (0.1 bar/1.5 psi). Take this into
account when checking the pressure of warm
tires. Only correct the tire pressure if it is too low
for the current operating conditions. If you
check the tire pressure when the tires are warm,
it results in a higher value than when the tires
are cold. This is normal. Do not under any cir-
cumstances release the air in order to adjust the
pressure to the prescribed value for cold tires.
The tire pressure would otherwise be too low. Observe the recommended tire pressures for
cold tires:
Ron the Tire and Loading Information placard5
on the B-pillar on the driver's side, or
Ron the tire pressure plate on the B-pillar on the
driver's side of the vehicle
Underinflated or overinflated tires
Underinflated tires:
GWARNING
Tires with pressure that is too low can over-
heat and burst as a consequence. In addition, they also suffer from excessive and/or irreg-
ular wear, which can severely impair the brak-
ing properties and the driving characteristics.
There is a risk of an accident.
Avoid tire pressures that are too low in all the
tires, including the spare wheel.
Underinflated tires can:
Rfail from being overheated
Radversely affect handling
Rwear excessively and/or unevenly
Rhave an adverse effect on fuel consumption
Overinflated tires
GWARNING
Tires with excessively high pressure can burst
because they are damaged more easily by
road debris, potholes etc. In addition, they
also suffer from irregular wear, which can
severely impair the braking properties and the driving characteristics. There is a risk of an
accident.
Avoid tire pressures that are too high in all the
tires, including the spare wheel.
Overinflated tires can:
Rincrease the braking distance
Radversely affect handling
Rwear excessively and/or unevenly
5Only for vehicle swith agross weigh tof less than 10,00 0lbs (4,536 kg).
248Tire pressure
Wheels and tires
Page 251 of 286

Radversely affect ride comfort
Rbe more susceptible to damage
Maximum tire pressures
:Maximum permitted tire pressure (example)
Never exceed the maximum permissible tire
inflation pressure. When adjusting the tire pres-
sures always observe the recommended tire
pressure for your vehicle (
Ypage 246).
iThe actual values for tires are specific to
each vehicle and may deviate from the values in the illustration.
Tire valve
GWARNING
Tire valve that are not approved for your vehi-
cle by the distributor named on the inside
cover page may result in a loss of tire pres-
sure. This may affect road safety. There is a
risk of an accident.
Only use tire valve that are approved for your
vehicle by the distributor named on the inside
cover page. Always make sure you have the
correct tire valve type for the tires on your
vehicle.
!Do not screw additional weights (check
valves, etc.) onto the tire valves. The elec-
tronic components could thus be damaged.
Only for vehicles without a tire pressure moni-
tor:
For safety reasons, Mercedes-Benz recom-
mends that you only use tire valves that have
been tested for use on your vehicle.
Checking the tire pressure manually
In order to determine and adjust the tire pres-
sures, proceed as follows:
XRemove the valve cap of the tire you wish to
check.
XPress the tire pressure gauge securely onto
the valve.
XRead the tire pressure and compare it with the
recommended value on the loading informa-
tion table or the tire pressure table
(
Ypage 246).
XIf the tire pressure is too low, increase it to the
recommended value.
XIf the tire pressure is too high, release air by
pressing down the metal pin in the valve. Use
the tip of a pen, for example. Then, check the
tire pressure again using the tire pressure
gauge.
XScrew the valve cap onto the valve.
XRepeat the steps for the other tires.
Tire pressure monitor
Important safety notes
GWARNING
Each tire, including the spare (if provided),
should be checked at least once a month
when cold and inflated to the pressure rec-
ommended by the vehicle manufacturer on
the Tire and Loading Information placard on
the driver's door B-pillar or the tire pressure
label on the inside of the fuel filler flap. If your
vehicle has tires of a different size than the
size indicated on the Tire and Loading Infor-
mation placard or the tire pressure label, you
should determine the proper tire pressure for
those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire pres-
sure telltale when one or more of your tires
are significantly underinflated. Accordingly,
when the low tire pressure telltale illuminates,
you should stop and check your tires as soon
as possible, and inflate them to the proper
pressure. Driving on a significantly underin-
Tire pressure249
Wheels and tires
Z
Page 252 of 286

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 246).
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
lamp 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 gage. 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 gage 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.
250Tire pressure
Wheels and tires
Page 253 of 286

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 164).
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 197) 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 173).
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 197) 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 173).
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 246).
Observe the notes on tire pressure when
doing so (
Ypage 246).
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.
Tire pressure251
Wheels and tires
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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 164)
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 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.
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
6.5Jx16 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)340 kPa
(3.4 bar/49 psi)——
6Vehicles with Super Single tires
252Tire pressure
Wheels and tires
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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
Tire pressure253
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.
254Loading the vehicle
Wheels and tires