inflation pressure MERCEDES-BENZ CLS-Class 2014 W218 Owner's Manual

001E
Alignment bolt
0025 Sheet for faulty wheel
0009 Tire inflation compressor
0016 Lugw rench
001D Fusealloc ation chart
X Ope nthe trunk lid.
X Lift the trunk floor upwards (Y page 283).Flat tire
Preparing the vehicle
Your vehicle may be equipped with:
R MOExtended tires (tires with run-flat
properties) (Y page 321)
Vehicle preparation is not necessary on
vehicles with MOExtended tires.
R an emergency spare wheel(Y page 367)
Information on changing/mounting awheel
(Y page 357).
X Stop the vehicle on solid, non-slippery and
level ground, as far away as possible from
traffic.
X Switch on the hazard warning lamps.
X Secure the vehicle against rolling away
(Y page 167).
X If possible, bring the front wheels into the
straight-ahead position.
X Vehicles with AIRMATIC: make sure that
"normal" level is selected (Y page 189).
X Switch off the engine.
X Vehicles without KEYLESS-GO: remove
the SmartKey from the ignition lock.
X Vehicles with KEYLESS-GO: open the
driver's door.
The on-board electronicsn ow have status
0.T his is the same as the SmartKey having
been removed.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 147). X
All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area while awheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Get out of the vehicle. Pay attention to
traffic conditionsw hen doing so.
X Close the driver's door. MOExtended tires (tires with run-flat
properties)
General notes With MOExtended tires (tires with run flat
characteristics), you can continue to drive
your vehicle even if there is
atotal loss of
pressure in one or more tires. The affected
tire must not show any clearly visible damage.
You can recognizeM OExtended tires by the
MOExtended marking which appears on the
sidewall of the tire. You will find this marking
next to the tire size designation, the load-
bearing capacity and the speed index
(Y page 351).
MOExtended tires may only be used in
conjunction with an active tire pressure loss
warning system or with an active tire pressure
monitor.
If the pressurel oss warning message
appearsint he multifunction display:
R Observe the instructions in the display
messages (Y page 258).
R Check the tire for damage.
R If driving on, observe the following notes.
The maximum driving distance is
approximately 50 miles (80 km) when the
vehicle is partially laden and approximately
18 miles (30 km) when the vehicle is fully
laden. Flat tire
321Breakdown assistance

and wheels checked at
aqualified specialist
workshop.
When parking your vehicle ,makes ure that
th et ires do no tget 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 at an obtuse angle.
Otherwise, the tires, particularly the
sidewalls, may be damaged. Regular checking of wheels and tires
G
WARNING
Damaged tires can cause tire inflation
pressure loss. As aresult, you could lose
control of your vehicle. There is arisk of
accident.
Check the tires regularly for signs of damage
and replace any damaged tires immediately.
Regularly chec kthe wheels and tires of your
vehicle for damage at least once amonth, as
well as after driving off-road or on rough
roads. Damaged wheels can cause aloss 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 335). If necessary, turn
the front wheels to full lock in order to inspect
the inner side of the tire surface.
All wheels must have avalve cap to protect
the valve against dirt and moisture. Do not
mount anything onto the valve other than the
standard valve cap or other valve caps
approved by Mercedes-Ben zfor your vehicle.
Do not use any other valve caps or systems,
e.g. tire pressure monitoring systems. Regularly check the pressure of all the tires
particularly prior to long trips. Adjust the tire
pressure as necessary (Y
page 338).
Observe the notes on the emergenc yspare
wheel (Y page 367).
The service life of tires depends, among other
things, on the following factors:
R Drivin gstyle
R Tire pressure
R Distance covered Important safety notes on the 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 arisk 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: 0015in (3 mm)
R M+S tires: 001Fin (4 mm)
For safety reasons, replace the tires before
the legally prescribed limit for the minimum
tire tread depth is reached. Operation
335Wheels and tires Z

Check
Tir
ep ressure specifications
Important safety notes G
WARNING
Tire switht irep ressure sthata re to olow or
to oh igh are associated wit hthe following
hazards:
R they can burst, in particular if th evehicle is
heavily laden or when driven at high
speeds.
R thet ires can wear excessively and/or
unevenly, whic hcan severely impai rtire
traction.
R the driving, steerin gand braking
characteristics may be severely impaired.
There is arisk of accident.
Follow recommended tir einflation 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 along journey
R under different operating conditions,e .g.
off-road driving
If necessary, correct the tire pressure.
i The specifications on the sample Tire and
Loading Information placard and tire
pressure tables are examples. Tire
pressure specifications are vehicle-specific
and may deviate from the data shown here.
The tire pressure specifications that are
valid for your vehicle can be found on the
Tire and Loading Information placard and
tire pressure table on the vehicle.
General notes The recommended tire pressures for the tires
mounted at the factory can be found on the
labelsd escribed here.
Operation with the emergency spare
wheel (Ypage 367). Further information on tire pressures can be
obtained at aqualified specialist workshop.
Tire and Loading Information placard 001A
Recommended tire pressures
The Tire and Loading Information placard is
on the B-pillar on the driver's side
(Y page 345).
The Tire and Loading Information placard
contains the recommended tire pressures for
cold tires. The recommended tire pressures
are valid for the maximum permissible load
and up to the maximum permissible vehicle
speed.
Tire pressuret able The tire pressure table is on the inside of the
fuel filler flap.
Example: tire pressure table for all tires permitted
for this vehicle by the factory
The tire pressure table contains the
recommended pressures for cold tires for
various operating conditions, i.e. differing
load and speed conditions.338
CheckWheels and tires

The tires are cold:
R
if the vehicle has been parked without
direct sunlight on the tires for at least three
hours and
R if the vehicle has been driven for less than
1m ile (1.6 km).
The tire temperature changes depending on
the outside temperature, the vehicle speed
and the tire load. If the tire temperature
changes by 18 ‡(10 †), the tire pressure
changes by approximately 10 kPa (0.1 bar/
1.5 psi). Take this into account when
checking the pressure of warm tires. Only
correc tthe tire pressure if it is too low for the
current operating conditions. If you check the
tire pressure when the tires are warm, the
resulting value will be higher than if the tires
were cold. This is normal. Do not reduce the
tire pressure to the value specified for cold
tires. The tire pressure would otherwise be
too low.
Observe the recommended tire pressures for
cold tires:
R on the Tire and Loading Information placard
on the B-pillar on the driver's side
R in the tire pressure table on the inside of
the fuel filler flap
R on the yellow label on the emergency spare
wheel (depending on the vehicle
equipment) Underinflated or overinflated tires
Underinflation G
WARNING
Tires with pressure that is too low can
overheat and burst as aconsequence. In
addition, they also suffer from excessive and/
or irregular wear, which can severely impair
the braking properties and the driving
characteristics. There is arisk of an accident.
Avoid tire pressures that are too low in all the
tires, including the spare wheel. Underinflated tires may:
R
overheat, leading to tire defects
R have an adverse effect on handling
characteristics
R wear quickly and unevenly
R have an adverse effect on fuel consumption
Overinflation 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 arisk of an
accident.
Avoid tire pressures that are too high in all the
tires, including the spare wheel.
Overinflated tires may:
R increase the braking distance
R have an adverse effect on handling
characteristics
R wear quickly and unevenly
R have an adverse effect on ride comfort
R be more susceptible to damage
Maximum tire pressures 001A
Example: maximum permissible tire
pressure
Never exceed the maximum permissible tire
inflation pressure. Always observe the
recommended tire pressure for your vehicle 340
CheckWheels and tires

Example: current tire pressure display
Important safety notes
G
WARNING
Each tire ,including the spare (i fprovided),
should be checked at least once every two
weeks when cold and inflated to the pressure
recommended by the vehicl emanufacturer
on the Tire and Loading Information placard
on the driver' sdoor B-pillar or the tire
pressure label on the inside of the fuel filler
flap .Ify our vehicle has tires of adifferent size
than the size indicated on the Tire and Loading
Information placard or, if available, the tire
pressure label, you should determin ethe
proper tire pressure for those tires.
As an added safety feature, your vehicle has
been equipped with atire pressure monitoring
system (TPMS) that illuminates alow tire
pressure telltale when one or more of your
tires are significantly underinflated.
Accordingly, when the low tire pressure
telltale lights up, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Drivin gona
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 asubstitute for proper tire
maintenance, and it is the driver's
responsibility to maintain correc ttire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The TPMS malfunction indicator is combined with
the low tire pressure telltale. When the
system detect
samalfunction, the warning
lamp will flash for approximately aminute 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 avariety 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.
It is the driver's responsibility to set the tire
pressure to that recommended for cold tires
which is suitable for the operating situation
(Y page 338). Note that the correc ttire
pressure for the current operating situation
must first be taught-in to the tire pressure
monitor. If there is asubstantial loss of
pressure, the warning threshold for the
warning message is aligned to the reference
values taught-in .Restart the tire pressure
monitor after adjustin gthe pressure of the
cold tires (Y page 345). The current
pressures are saved as new reference values.
As aresult, awarning message will appear if
the tire pressure drops significantly.
The tire pressure monitor does not warn you
of an incorrectly set tire pressure. Observe
the notes on the recommended tire pressure
(Y page 338).
The tire pressure monitor is not able to warn
you of asudden loss of pressure, e.g. if the
tire is penetrated by aforeign object. In the
event of asudden loss of pressure, bring the
vehicle to ahalt by brakin gcarefully. Avoid
sudden steering movements Check
343Wheels and tires Z

the syste
mmay still display th etire
pressure of th eremove dwheel for afew
minutes. The value displayed for the
mounte demergenc yspar ew heel is no tthe
same as the current tire pressure of the
emergency spare wheel. "Minispare" emergency sparew
heel/
collapsible sparew heel
Removing the "Minispare" emergency
sparew heel The emergency spare wheel can be found in
the stowage well under the trunk floor.
X Lift the trunk floor upwards (Y page 283).
X Turn stowage tray 0010counter-clockwise
and remove together with vehicle tool kit
tray 001A.
X Remove "Minispare" emergency spare
wheel 0024.
Removing the collapsible sparew heel
(AMG vehicles) The emergency spare wheel can be found in
the stowage wel
lunde rthe trunk floor.
X Lift the trunk floor upwards (Y page 283).
X Reach into cutout 001Ain the tool holder and
lift it up.
X Remove collapsibles pare wheel0010.
Always observe the instructions and safety
notes in the "Mounting awheel" section
(Y page 358). Stowing
aused collapsible spare
wheel
! Only place the collapsible spare wheel in
the vehicle when it is dry. Otherwise,
moisture may get into the vehicle.
Take the following steps to stow aused
collapsible spare wheel. It will not otherwise
install into the spare wheel well. Mercedes-
Benz recommends that you have this work
performed at aqualified specialist workshop,
e.g. at an authorized Mercedes-Benz Center.
X Unscrew the valve cap from the valve.
X Use the back of the valve cap to unscrew
the valve insert from the valve and release
the air.
i Fully deflating the tires can take afew
minutes.
X Screw the valve insert back into the valve.
X Screw the valve cap back on.
X Remove the protective sheet from the
vehicle tool kit and pull it over the
collapsible spare wheel.
X Stow the collapsible spare wheel in the
emergency spare wheel well under the
trunk. Inflating the collapsible spar
ewheel
! Inflate the collapsible spare wheel using
the tire inflation compressor before
lowering the vehicle. The wheel rim could
otherwise be damaged. 368
Emergency sparew
heelWheels and tires

!
Do not operate the tire inflation
compressor for longer than eight minutes
at at ime without abreak. It may otherwise
overheat.
The tire inflation compressor can be
operated againo nce it hascoole ddown. X
Mount the collapsibl espare whee las
described (Y page 357).
The collapsible spare wheel must be
mounted before it is inflated.
X Pull connector 0021and the air hose out of
the housing.
X Remove the cap from the valve on the
collapsible spare wheel.
X Screw union nut 001Aon the air hose ont othe
valve.
X Make sure on/off switch 001Eof the tire
inflation compressor is set to 0.
X Insert connector 0021intot he cigarette
lighter socket or int oa12Vsocket in your
vehicle.
Observe the notes on the cigarett elighter
(Y page 288). Observe the notes on
socket s(Ypage 289).
X Turn the SmartKey to position 1in the
ignition lock (Y page 147).
X Press on/offs witch001Eon th etirei nflation
compressor to I.
The tir einflatio ncompressor is switched
on. The tire is inflated. The tire pressure is
shown on pressure gauge 0024.
X Inflate the tire to the specified tire
pressure. The specified tire pressure is printed on the
yellow label of the emergenc
yspare wheel.
X When the specified tire pressure has been
reached, press on/offs witch001Eon the
electric air pump to 0.
The tir einflatio ncompressor is switched
off.
X Turn the SmartKey to position 0in the
ignition lock.
X If the tire pressure is higher than the
specified pressure, press pressure release
button 0010until the correc ttire pressure has
been reached.
X Unscrew union nut 001Aon the air hose from
the valve.
X Screw the valve cap ont othe collapsible
spare wheel valve again.
X Stow plug 0021and the air hose in the lower
section of the blower housing.
X Stow the tire inflation compressor in the
vehicle. Emergency sparew
heel
369Wheels and tires Z