
information table or the tire pressure table
(Y
page 290).
X If the tire pressure is too low, increase it to
the recommended value.
X If 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.
X Screw the valve cap onto the valve.
X Repeat the steps for the other tires. Tire pressure monitor
Important safety notes G
WARNING
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-
flated tire causes the tire to overheat and can
lead 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
equipped 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 tires. The
tire pressure monitor only functions if the
corresponding sensors are installed to 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 Tire pressure
293Wheels and tires Z 

notes on the recommended tire pressure
(Y
page 290).
The tire pressure monitor is not able to warn
you of a sudden loss of pressure, e.g. follow-
ing penetration by a foreign object. In this
event, brake the vehicle until it comes to a
standstill. Do not carry out any sudden steer-
ing maneuvers.
The tire pressure monitor has a yellow 0077
warning lamp in the instrument cluster for
indicating pressure loss/malfunctions (USA)
or pressure loss (Canada). Depending on how
the warning lamp flashes or lights up, an
underinflated tire or a malfunction in the tire
pressure monitor is displayed:
R if the 0077 warning lamp is lit continuously,
the tire pressure on one or more tires is
significantly too low. The tire pressure mon-
itor is not malfunctioning.
R USA only: if the 0077warning lamp flashes
for 60 seconds and then remains lit con-
stantly, the tire pressure monitor is mal-
functioning.
Only vehicles with steering wheel buttons: the
on-board computer displays information on
tire pressure. After a few minutes of driving,
the current 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 0077
tire pressure warning lamp flashes for
60 seconds and then remains lit. When the
malfunction has been rectified, the 0077tire
pressure warning lamp goes out 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 value
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 vehi-
cle, this can interfere with the operation of
the tire pressure monitor.
Checking the tire pressure electroni-
cally (vehicles with steering wheel but-
tons) Tire pressure display
Using the steering wheel buttons
X
Turn the key to position 2in the ignition
lock.
X Press the 0080or007F button repeatedly
until the standard display is shown
(Y page 189).
X Press the 0041or0068 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. dis‐
Tire pres. dis‐
played after driving for several played after driving for several
minutes minutes message appears.
i The tire pressure value shown in the dis-
play may differ from those measured at a
gas station 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 signifi-
cant pressure loss on one or more tires, the
on-board computer displays a warning mes-
sage. The 0077tire pressure loss warning 294
Tire pressureWheels and tires 

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 

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 

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 

Traction
Traction is the result of friction between the
tires and the road surface.
TWR (permissible trailer drawbar load)
The TWR is the maximum permissible weight
that may act on the ball coupling of the trailer
tow hitch.
Wear indicator
Narrow bars (tread wear bars) that are dis-
tributed over the tire tread. If the tire tread is
level with the bars, the wear limit of 00CDin
(1.6 mm) has been reached.
Distribution of the vehicle occupants
The distribution of vehicle occupants over
designated seat positions in a vehicle.
Maximum permissible payload weight
Nominal load and goods/luggage load plus
68 kg (150 lbs) multiplied by the number of
seats in the vehicle. Flat tire
General notes
Your vehicle is equipped with a spare wheel.
The spare wheel is under the vehicle at the
rear (Y page 313).
Information about fitting a wheel can be found
in the "Wheel change" section (Y page 308).
When you replace a tire, we recommend that
you also replace the tire valve. Please observe
the safety-relevant information on tire valve
(Y page 292). Changing wheels
Rotating the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the driving characteristics if
the wheels or tires have different dimensions.
The wheel brakes or suspension components may also be damaged. There is a risk of acci-
dent.
Rotate front and rear wheels only if the wheels
and tires are of the same dimensions.
! On vehicles equipped with a tire pressure
monitor, electronic components are
located in the wheel.
Tire-mounting tools should not be used
near the valve. This could damage the elec-
tronic components.
Only have tires changed at a qualified spe-
cialist workshop.
Always observe the instructions and safety
notes in the "Mounting a wheel" section
(Y page 308).
The wear patterns on the front and rear tires
differ, depending on the operating conditions.
Rotate the wheels before a clear wear pattern
has formed on the tires. Front tires typically
wear more on the shoulders and the rear tires
in the center.
If your vehicle's tire configuration allows, you
can rotate the wheels according to the inter-
vals in the tire manufacturer's warranty book
in your vehicle documents. If no warranty
book is available, the tires should be rotated
every 3,000 to 6,000 miles (5,000 to
10,000 km), or earlier if tire wear requires. Do
not change the direction of rotation.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is rotated. Check the tire pressure and reac-
tivate the tire pressure monitor if necessary. Changing wheels
307Wheels and tires Z 

Diagram showing tire rotation for single and dual
tires
Single tires: if the tires are of identical
dimensions, you can rotate both wheels on
both the front and rear axles so that the tires'
original direction of rotation is maintained. On
unidirectional tires, an arrow on the sidewall
shows the prescribed direction of rotation of
the tire.
Twin rear tires: if the tires are of identical
dimensions, you can rotate the wheels on the
front axle and the inner wheels on the rear
axle in pairs such that the original direction of
tire rotation is retained. With unidirectional
tires, you may rotate the outside wheels at
the rear axle from one side to the other. Direction of rotation
Tires with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of hydroplaning. You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tire indicates
its correct direction of rotation.
You may mount a spare wheel against the
direction of rotation. Observe the time
restriction on use as well as the speed limi-
tation specified on the spare wheel. Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protect the
tires from contact with oil, grease and fuel. Mounting a wheel
Vehicle preparation X
Stop the vehicle as far away as possible
from traffic and on a level, firm and non-slip
surface.
X If your vehicle poses a risk to approaching
traffic, switch on the hazard warning lamps.
X Apply the parking brake.
X Turn the front wheels to the straight-ahead
position.
X Move the selector lever of the automatic
transmission to position P.
X Switch off the engine.
X Passengers should leave the vehicle. Make
sure that the passengers are not endan-
gered as they do so.
X Make sure that no one is near the danger
area while the wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Place the warning triangle or warning lamp
at a suitable distance.
Observe legal requirements.
X Secure the vehicle to prevent it from rolling
away.
i Observe the safety notes on parking in the
section on "Driving and parking"
(Y page 151).
X On level terrain: place chocks or other
suitable objects under the front and rear of
the wheel that is diagonally opposite the
wheel to be changed.
X On slight inclines: place chocks or other
suitable objects under the wheels on the
front and rear axles opposite the wheel to
be changed. 308
Changing wheelsWheels and tires 

X
Take the vehicle tool kit and the jack from
the footwell on the co-driver's side
(Y page 276).
X Remove the spare wheel from the spare
wheel bracket (Y page 314). Observe the
safety notes in the "Spare wheel" section
(Y page 313).
X On wheels with wheel bolts, remove the
hub caps. X
Assemble the lug wrench extension using
the middle rod and the rod with the largest
diameter from the three-piece jack pump
lever.
X Starting with the middle rod, slide the lug
wrench extension as far as it will go onto
the lug wrench.
X Using lug wrench 0043, loosen the wheel
bolts/wheel nuts on the wheel to be
changed by about one full turn. Do not
unscrew the wheel bolts/nuts completely.
Raising the vehicle G
WARNING
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically, directly under
the jacking point of the vehicle. G
WARNING
On uphill and downhill slopes, the jack could
tip over with the vehicle raised. There is a risk
of injury.
Do not change wheels on uphill or downhill
gradients. Notify a qualified specialist work-
shop.
! Only position the jack on the jacking
points intended for this purpose. You could
otherwise damage the vehicle.
Observe the following when raising the vehi-
cle:
R When raising the vehicle, only use the jack
which Mercedes-Benz has specifically
approved for your vehicle.
R The vehicle's jack is intended only to raise
the vehicle for a short time when changing
a wheel. It is not suited for performing
maintenance work under the vehicle.
R Avoid changing the wheel on uphill and
downhill slopes.
R Before raising the vehicle, secure it from
rolling away by applying the parking brake
and inserting wheel chocks. Never disen-
gage the parking brake while the vehicle is
raised.
R The jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a
large, load-bearing underlay must be used.
On a slippery surface, a non-slip underlay
must be used, e.g. rubber mats.
R Make sure that the distance between the
underside of the tires and the ground does
not exceed 1,2 in(3 cm).
R Never place your hands or feet under the
raised vehicle.
R Never lie under the raised vehicle.
R Never start the engine when the vehicle is
raised.
R Never open or close a door when the vehi-
cle is raised.
R Make sure that no persons are present in
the vehicle when the vehicle is raised. Changing wheels
309Wheels and tires Z