When parking your vehicle, make sure that
the tires do not get deformed by the curb or
other obstacles. If it is necessary to drive over
curbs, speed humps or similar elevations, try
to do so slowly and not at a sharp angle.
Otherwise, the tires, particularly the
sidewalls, can get damaged. Regular wheel and tirec
hecksG
WARNING
Damaged tires can cause tire inflation
pressure loss .As a result, you could lose
control of your vehicle. There is a risk of
accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately.
Check the wheels and tires of your vehicle for
damage regularly, i.e. at least every two
weeks, as well as after driving off-road or on
rough roads. Damaged wheels can cause a
loss of tire pressure. Pay particular attention
to damage such as:
R cuts in the tires
R punctures
R tears in the tires
R bulges on tires
R deformation or severe corrosion on wheels
Regularly check the tire tread depth and the
condition of the tread across the whole width
of the tire (Y page 275). If necessary, turn
the front wheels to full lock in order to inspect
the inner side of the tire surface.
All wheels must have a valve cap to protect
the valve against dirt and moisture. Do not
install anything onto the valve other than the
standard valve cap or other valve caps
approved for your vehicle by dealers listed on
the inside of the front cover. Do not install any
other valve caps or systems, e.g. tire pressure
monitor systems.
Regularly check the pressure of all the tires,
particularly prior to long trips. Adjust the tire
pressure if necessary (Y page 278).The service life of tires depends on various
factors, including the following:
R
driving style
R tire pressure
R mileage Tire tread
G
WARNING
Insufficient tire tread will reduce tire traction.
The tire is no longer able to dissipate water.
This means that on wet road surfaces, the risk
of hydroplaning increases, in particular where
speed is not adapted to suit the driving
conditions. There is a risk of accident.
If the tire pressure is too high or too low, tires
may exhibit different levels of wear at
different locations on the tire tread. Thus, you
should regularly check the tread depth and
the condition of the tread across the entire
width of all tires.
Minimum tire tread depth for:
R Summer tires: 000Cin (3 mm)
R M+S tires: 000Din (4 mm)
For safety reasons, replace the tires before
the legally prescribed limit for the minimum
tire tread depth is reached. Bar marking
0005for tread wear is integrated
into the tire tread.
Tread wear indicators (TWIs) are required by
law. Six indicators are positioned over the tire
tread. They are visible once the tread depth
is approximately 000Bin (1.6 mm). If this is the Operation
275Wheels and tires Z
Tire pressure
Tire pressure specifications
Important safety notes G
WARNING
Underinflated or overinflated tires pose the
following risks:
R the tires may burst, especially as the load
and vehicle speed increase.
R the tires may wear excessively and/or
unevenly, which may greatly impai rtire
traction.
R the driving characteristics, as well as
steering and braking, may be greatly
impaired.
There is a risk of an accident.
Follow recommended tire inflation pressures
and chec kthe pressure of all the tires
including the spare wheel:
R monthly, at least
R if the load changes
R before beginning a long journey
R under different operating conditions, e.g.
off-road driving
If necessary, correct the tire pressure.
i The specifications shown on the sample
Tire and Loading Information placard and
tire pressure table are examples. Tire
pressure data are vehicle-specific and may
deviate from the data illustrated here. The
tire pressure data applicable to your
vehicle can be found on the Tire &Loading
Information placard or tire pressure plate
of your vehicle. H
Environmental 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.
You will find a table of recommended tire
pressures on the Tire and Loading
Information placard
5
or on the tire pressure
table on the B-pillar on the driver's side of the
vehicle.
Further information on tire pressure can be
obtained at a qualified specialist workshop.
Tire and Loading Information placard Tire and Loading Information placard
561011
The Tire and Loading Information placard is
on the B-pillar on the driver's side of the
vehicle (Y page 286).
The Tire and Loading Information placard
contains recommended tire pressures 0005for
cold tires. Recommended tire pressures 0005
are valid for the maximum permissible load
and up to the maximum permissible speed of
the vehicle.
5 Only for vehicles with a gross vehicle weight of less than 10,000 lbs(4,536 kg).
6 Only for vehicles with a gross weight of less than 10,000 lbs(4,536 kg).
10 Only for vehicles with a gross vehicle weight of less than 10,000 lbs(4,536 kg).
11 Only for vehicles with a gross weight of less than 10,000 lbs(4,536 kg). 278
Tire pressureWheels and tires
the braking 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:
R fail from being overheated
R adversely affect handling
R wear excessively and/or unevenly
R have an adverse effect on fuel consumption
Overinflated tires G
WARNING
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:
R increase the braking distance
R adversely affect handling
R wear excessively and/or unevenly
R adversely affect ride comfort
R be more susceptible to damage
Maximum tire pressures 0005
Maximum permitted tire pressure
(example) Never exceed the maximum permissible tire
inflation pressure. When adjusting the tire
pressures always observe the recommended
tire pressure for your vehicle (Y
page 278).
i The actual values for tires are specific to
each vehicle and may deviate from the
values in the illustration. Tire valve (snap-in valve)
G
WARNING
Tire valve that are not approved for your
vehicle by the distributor named on the inside
cover page may result in a loss of tire
pressure. 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
electronic components could thus be
damaged.
Only for vehicles without atire pressure
monitor:
For safety reasons, we recommend that you
only use tire valves that have been tested for
use on your vehicle, e.g. those manufactured
by Wonder:
R type TR 600 for the vehicle types 2500
R type TR 418 for the vehicle types 3500 Checking the tire pressure manually
In order to determine and adjust the tire
pressures, proceed as follows:
X Remove the valve cap of the tire you wish
to check.
X Press the tire pressure gauge securely onto
the valve. 280
Tire pressureWheels and tires
X
Read the tire pressure and compare it with
the recommended value on the loading
information table or th etire pressure table
(Y page 278).
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,
chec kthe tire pressure again using the tire
pressure gauge.
X Screw the valve cap onto the valve.
X Repeatt he 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
recommended 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
Information 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
pressure 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 underinflated 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 stopping ability. Please note that the TPMS is not a substitute
for proper tire maintenance, and it is the
driver'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
vehicle 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
malfunctions may occur for a variety of
reasons, including the installation of
incompatible replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction 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 properly.
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
pressure. Tire pressure
281Wheels and tires Z
Do not drive any further. Contact a qualified
specialis tworkshop. G
WARNING
The tire sealant is harmful and causes
irritation. It must not come into contact with
your skin, eyes or clothing or be swallowed.
Do not inhale TIREFIT fumes. Keep tire sealant
away from children. There is a risk of injury.
If you come into contact with the tire sealant,
observe the following:
R Rinse off the tire sealant from your skin
immediately with water.
R If the tire sealant comes into contact with
your eyes, immediately rinse them
thoroughly with clean water.
R If tire sealant is swallowed, immediately
rinse your mouth out thoroughly and drink
plenty of water. Do not induce vomiting,
and seek medical attention immediately.
R Immediately change out of clothing which
has come into contact with tire sealant.
R If an allergic reaction occurs, seek medical
attention immediately.
In addition, observe the manufacturer's
safety instructions on the sticker on the tire
inflation compressor and on the sticker on the
tire sealant bottle.
The tire sealant is water-soluble. If tire sealant
escapes, you can wash it off with water.
i Have the tire sealant replaced every
8y ears at a qualified specialist workshop.
! The tire inflation compressor should only
be connected to the 12 V socket in the
center console. You may otherwise
damage the vehicle's electrics.
! Do not operate the tire inflation
compressor for longer than 20 minutes at
a time without a break. The tire inflation
compressor may otherwise overheat.
The tire inflation compressor can be
operated again once it has cooled down. H
Environmental note
Have the used tire sealant bottle disposed of
professionally, e.g. at aqualified specialist
workshop.
X Prepare the vehicle as described
(Y page 295).
X If possible, remove the foreign object that
has pierced the tire, e.g .the screw or the
nail.
It is beneficial to the sealing process if the
foreign body that has pierced the tire is
removed.
X Remove the Premium tire sealant, the
accompanying
"max 50 mph"("max80 km/h") sticker and
the tire inflation compressor from the
stowage compartmentint he right-hand
doorway (Y page 264).
X Affix the sticker within the driver's field of
vision. Tire inflation compressor
0005
Switch
0006 Angled connecting piece
0026 Tire inflation compressor hose
0025 Flap
0023 Pressure gauge with pressure release
screw
0024 Connector with cable
X Open flap 0025on the tire inflation
compressor.
X Pull connector 0024and hose 0026with
pressure gauge 0023from the housing. 296
Flat tireWheels and tires
Tire sealant bottle for single tires
0018
Valve
0019 Tire sealant bottle with hook, hose and
valve core extractor Tire sealant bottle for twin tires
0018
Valve
0019 Tire sealant bottle with hook, hose and
angled connecting piece
X Shake tire sealant bottle 0019.
X Unscrew and remove the cap from valve
0018 of tire sealant bottle 0019.
X Push angled valve adapter 0006located on
hose 0026of the tire inflation compressor as
far as it will go ontov alve0018of tire sealant
bottle 0019and fix it in place.
The following steps differ depending on the
vehicle tires.
R Single tire
R Twin tires, inner wheel
R Twin tires, outer wheel Single tire
X
Pull knob 001Bout of valve core extractor
001D as far as it will go.
X Remove the cap from valve 001Eon the
defective tire.
X Hang tire sealan tbottle 0019in the
uppermost wheel ventilation hole using
hook 001A.
X Keep pressing lever 001C, place valve core
extractor 001Dfirmly onto tire valve 001Eand
then release lever 001C.
X Press knob 001Binto the valve core of valve
001E, turning it gently as you do so, until the
shaft of valve core extractor 001Dengages.
X Turn knob 001Bcounter-clockwise until the
valve core is unscrewed.
X Pull knob 001Bout of valve core extractor
001D as far as it will go.
This pulls the valve core into valve core
extractor 001Dand seals it against valve core
extractor stop 001D.
X Make sure that the pressure release screw
on pressure gauge 0023is closed.
X Connect connector 0024to the 12 V socket
(12 V, 25 A, 300 W) on the center console
(Y page 228).
X Start the engine.
X Press switch 0005on the tire inflation
compressor to I.
The tire inflation compressor is activated.
The tire sealant is then pumped into the tire
and the tire pressure is increased. Allow the Flat tire
297Wheels and tires Z
tire inflatio
ncompressor to run for at least
10 minutes until tire sealant bottle 0019is
completely empty and the tire pressure is
at least 300 kPa (3.0 bar/43.5 psi).
If possible, inflate the tire to the
recommended tire pressure. You will find a
table of recommended tire pressure on the
Tire and Loading Information placard 8
or
the tire pressure plate on the B-pillar on the
driver's side of the vehicle ( Ypage 278).
X Then press 0on tire inflation compressor
switch 0005.
The tire inflation compressor is
deactivated.
X Quickly slide knob 001Bto the stop in valve
core extractor 001D.
X Turn knob 001Bclockwise until the valve core
is firmly screwed into tire valve 001E.
i Do not pull valve core extractor 001Doff tire
valve 001Ewhile the valve core is unscrewed
from tire valve 001E.The tire sealant could
otherwise run out and get on your skin or
clothes.
X Press lever 001Cand pull valve core extractor
001D from tire valve 001E.
X Screw the valve cap onto tire valve 001E.
X Observe the following notes and
instructions:
R
Tire pressure of 300 kPa (3.0 bar/
43.5 psi) not reached (Y page 301).
R Tire pressure of 300 kPa (3.0 bar/
43.5 psi) reached (Y page 301). Twin tires, inner wheel X
Unscrew the valve cap from valve
extension 001Aon the defective wheel.
X Screw valve core extractor 001Bclockwise as
far as it will go onto valve extension 001A.
X Screw valve core extractor 001B
approximately a further 0003turn to release
valve extension 001A.
X Unscrew valve extension 001Aand the valve
core extractor 001Bcounter-clockwise from
tire valve 001F.
X Unscrew valve extension 001Afrom valve
core extractor 001B. X
Pull knob 001Dout of valve core extractor
001B as far as it will go.
X Screw valve core extractor 001Bclockwise
onto tire valve 001F.
X Press knob 001Dinto the valve core of valve
001F, turning it gently as you do so, until the
shaft of valve core extractor 001Bengages.
8 Only for vehicles with a gross vehicle weight of less than 10,000 lbs(4,536 kg). 298
Flat tireWheels and tires
X
Turn knob 001Dcounter-clockwise until the
valve core is unscrewed.
X Pull knob 001Dout of valve core extractor
001B as far as it will go.
This pulls the valve core into valve core
extractor 001Band seals it against valve core
extractor stop 001B.
X Hang tire sealant bottle 0019in the
uppermost wheel ventilation hole 001C.
X Push angled valve adapter 001Elocated on
the hose of tire sealant filler bottle 0019as
far as it will go on to valve core extractor
001B and fix it in place.
X Make sure that the pressure release screw
on pressure gauge 0023is closed.
X Connect connector 0024to the 12 V socket
(12 V, 25 A, 300 W) on the center console
(Y page 228).
X Start the engine.
X Press switch 0005on the tire inflation
compressor to move to position I.
The tire inflation compressor is activated.
The tire sealant is then pumped into the tire
and the tire pressure is increased. Allow the
tire inflation compressor to run for at least
10 minutes until tire sealant bottle 0019is
completely empty and the tire pressure is
at least 300 kPa (3.0 bar/43.5 psi).
If possible, inflate the tire to the
recommended tire pressure. You will find a
table of recommended tire pressure on the
Tire and Loading Information placard 9
or
the tire pressure plate on the B-pillar on the
driver's side of the vehicle ( Ypage 278).
X Then press 0on tire inflation compressor
switch 0005.
The tire inflation compressor is
deactivated.
X Quickly slide knob 001Dto the stop in valve
core extractor 001B.
X Turn knob 001Dclockwise until the valve core
is firmly screwed into tire valve 001F.i
Do not pull valve core extractor 001Bfrom
tire valve 001Fwhile the valve core is
unscrewed from tire valve 001F. The tire
sealant could otherwise run out and get on
your skin or clothes.
X Pull knob 001Dout of valve core extractor
001B as far as it will go.
X Unscrew valve core extractor 001Bcounter-
clockwise from tire valve 001F.
X Screw valve extension 001Aonto tire valve
001F and tighten it.
X Screw the valve cap onto valve extension
001A.
X Observe the following notes and
instructions:
R
Tire pressure of 300 kPa (3.0 bar/
43.5 psi) not reached (Y page 301).
R Tire pressure of 300 kPa (3.0 bar/
43.5p si) reached (Y page 301).
9 Only for vehicles with a gross vehicle weight of less than 10,000 lbs(4,536 kg). Flat tire
299Wheels and tires Z