MOExtended tires (tires with run-flat
properties)
With MOExtended tires (tires with run flat char-
acteristics), you can continue to drive you rvehi-
cle even if there is atotal loss of pressure in one
or more tires.
MOExtended tires may only be use dinconjunc-
tion with an active tire pressure loss warning
system or with an active tire pressure monitor
and on wheels specifically tested by Mercedes-
Benz.
Notes on driving with MOExtended tires with a
flat tire (
Ypag e242).
Vehicles equipped with MOExtended tires are
not equipped with aTIREFIT kit at the factory. It
is therefore recommendedt hat you additionally
equip you rvehicl ewithaTIREFIT kit if you mount
tires that do not feature run-fla tproperties, e.g.
winter tires. ATIREFIT kit can be obtained from
aq ualified specialist workshop.
Winter operation
General notes
Have you rvehicl ewinter-proofed at aqualified
specialist worksho patthe onset of winter.
Observe the notes in the "Changing awheel"
section (
Ypag e274).
Driving with summer tires
At temperatures below 45 ‡(+7 †), summer
tires lose elasticity and therefore traction and
braking power. Change the tires on you rvehicle
to M+S tires .Using summe rtires at very cold
temperatures coul dcaus ecracks to form,
thereby damaging the tires permanently.
Mercedes-Benz cannot accept responsibility for
this type of damage.
GWARNING
Damaged tires can caus etire inflation pres-
sure loss. As aresult, you coul dlose control of
you rvehicle. There is arisk of accident.
Check the tires regularl yfor signs of damage
and replace any damaged tires immediately.
M+S tires
GWARNING
M+S tires with atire tread depth of less than
ã in (4 mm) are not suitable for use in winter
and do not provide sufficient traction. There is
ar isk of an accident.
M+S tires with atread depth of less than ãin
(4 mm) must be replaced immediately.
At temperatures below 45 ‡(+7 †), use winter
tires or all-season tires. Both type softire are
identified by the M+S marking.
Only winter tires bearing the isnowflake
symbol in addition to the M+S marking provide
the best possibl egrip in wintry road conditions.
Only these tires wil lallow driving safety systems
such as ABS and ESP
®to function optimally in
winter. Theset ires have beend eveloped specif-
ically for driving in snow.
Use M+S tires of the same make and tread on all
wheels to maintain safe handling characteris-
tics.
Always observe the maximu mpermissible
speeds pecified for the M+S tires you have
mounted.
When you have mounted the M+S tires:
XCheck the tire pressures (Ypag e261).
XVehicles for Canada: restart the tire pres-
sure loss warning system (Ypag e262).
XRestart the tire pressure monitor
(Ypag e262).
Information about driving with an emergency
spare wheel (
Ypag e279).
Snowc hains
GWARNING
If snow chains are installed to the front
wheels, they may drag against the vehicle
body or chassis components. This could
cause damage to the vehicle or the tires.
There is arisk of an accident.
Wintero peration257
Wheels and tires
Z
To avoid hazardous situations:
Rnever install snow chains to the front
wheels
Ralwaysinstall snow chains in pairs to the
rear wheels.
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains that have
been specially approved for your vehicle by
Mercedes-Benz,ora re ofacorresponding
standard of quality. For more information,
please contact aqualified specialist workshop.
If you inten dtomount snow chains, please bear
the following points in mind:
RSnow chains may not be mounted on all
wheel/tire combinations. Permissible wheel-
tire combinations (
Ypage 278).
ROnly use snow chains when driving on roads
completely covered by snow. Remove the
snow chains as soon as possible when you
come to aroad that is not snow-covered.
RLocal regulations may restrict the use of snow
chains. Observe the appropriate regulations if
you wish to mount snow chains.
RDo not exceed the maximum permissible
speed of 30 mph (50 km/h).
You may wish to deactivate ESP
®when pulling
away with snow chains installed (Ypage 58).
You can thereby allow the wheels to spin in a
controlled manner ,achieving an increased driv-
ing force (cutting action).
Information about driving with an emergency
spare wheel (
Ypage 279).
Tire pressure
Tire pressur especifications
Important safety notes
GWARNING
Underinflated or overinflated tires pose the
following risks:
Rthe tires may burst, especially as the load
and vehicle speed increase.
Rthe tires may wear excessively and/or
unevenly, which may greatly impair tire
traction.
Rthe driving characteristics, as well as steer-
ing and braking, may be greatly impaired.
There is arisk 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 along journey
Runder different operating conditions, e.g.
off-road driving
If necessary, correctt he tire pressure.
The data on the Tire and Loading Information
placard and tire pressure table shown here are
examples. Tire pressure specification sare vehi-
cle-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 factor ycan be found on the
labels described here.
Operation with an emergency sparew heel:
information on operation with an emergency
spare wheel can be found in the general notes in
the "Emergency spare wheel" section
(
Ypage 280).
Further information on tire pressures can be
obtained at aqualified specialist workshop.
258Tirep ressure
Wheels and tires
Tire and LoadingInfor matio nplacard
:Recommended tire pressures
The Tire and Loading Informatio nplacard is on
the B-pillar on the driver's side (
Ypage 265).
The Tire and Loading Informatio nplacard con-
tains the recommende dtire pressures for cold
tires. The recommende dtire pressures ar evalid
for the maximum permissibl eloa da nd up to the
maximum permissibl evehicl espeed.
Tire pressure table
The tire pressure table is on the insid eofthe fuel
fille rflap. It shows the tire pressure for al ltires
permitted at the factory for thisv ehicle; see
illustratio n(example).
The tire pressure table contains the recommen-
de dp ressures for col dtiresfor various operat-
ing conditions, i.e .differin gloa da nd spee dcon-
ditions.
If at ire size precedes atire pressure, the fol-
lowing tire pressure informatio niso nlyv alid for
thatt ire size; see illustratio n(example).
The load conditions "partiall yladen "and "fully
laden" ar edefine dint he table for different num-
bers of occupants and amounts of luggage.T he
actual numbe rofseats mayd iffer.
Some tire pressure table sshowo nlyt he rim
diameters instea dofthe full tire size, e.g. R18.
Ri md iame terisp artoft he tire size and can be
found on the tire sidewall (
Ypage 269).
If the tire pressures have been set to the lower
values for lighte rloads and/or lowe rroad
speeds ,the pressures shoul dbereset to the
highe rvalues :
Rif youwanttod rive with an increased load
and/or
Rif yo uwanttod rive at highe rroa ds peeds
The tire pressures for increased load sand/or
highe rroa ds peeds, shown in the tire pressure
table ,mayhave anegative effect on driving
comfort.
If the tire pressure is not set correctly, thisc an
lead to an excessive buil dupofheata nd asud-
de nlossofp ressure.
For mor einformation, contact aquali fied spe-
cialist workshop.
Tire pressure259
Wheel sand tires
Z
Important notes on tire pressure
GWARNING
If th etirep ressur edrops repeatedly, th e
wheel, valv eortirem ay be damaged. Tir e
pressur ethatist oolow may result in atire
blow-out .Ther eisar iskofana ccident.
RCheckthe tire for foreign objects .
RCheckwhether th ewhee lislosing air or th e
valv eisl eaking .
If you are unable to rectify th edamage, con-
tac taq ualified specialist workshop.
GWARNIN G
If you fit unsuitable accessories onto tire
valves, th etirev alves may be overloaded and
malfunction ,whic hc an caus etirep ressur e
loss .Due to their design ,retrofitte dtirep res-
sur em onitors keep th etirev alveo pen .This
can also result in tire pressur eloss .Ther eisa
ris kofana ccident.
Only screw th estandard valv ecap or other
valv ecapsa pprove dbyMercedes-Ben zfor
your vehicl eontot he tire valve.
Use asuitable pressur egauge to chec kthe tire
pressure. The outer appearanc eofatired oes
no tp ermit any reliable conclusio nabout th etire
pressure. On vehicles equipped wit hthe elec -
tronic tire pressur emonitor, th etirep ressur e
can be checke dintheon-board computer.
The tire temperature and pressur eincreas e
when th evehicl eisinm otion.This is dependen t
on th edriving spee dand th eload.
Therefore, you should only correc ttirep res-
sures when th etires are cold.
The tires are cold:
Rif th evehicl ehas been parked wit hthe tires
out of direct sunligh tfor at least three hour s
and
Rif th evehicl ehas no tbeen driven further than
1m ile (1. 6km)
The tire temperature changes depending on th e
outside temperature, th evehicl espee dand th e
tire load. If th etiret
em p
erature changes by
18 ‡(10 †), th etirep ressur echanges by
approximately 10 kP a(0.1b ar/1.5 psi) .Take
this int oaccoun twhen checkin gthe pressur eof
warm tires .Onlyc orrect thet irep ressur eifitisto
ol ow for th ecurren toperating conditions. If
you chec kthe tire pressur ewhen th etires are
warm ,the resulting value will be higher than if
th et ires were cold. This is normal. Do no t
reduce th etirep ressur etothevalue specifie d
for cold tires .The tire pressur ewould otherwise
be to olow.
Observ ethe recommended tire pressures for
cold tires :
Ron theTirea nd Loading Information placard
on th eB-pillar on th edriver' sside
Rin th etirep ressur etable on th einside of th e
fuel filler flap
Rprinte dinyellow on th erim of th eemer-
gency/collapsible spar ewhee l(dependin gon
vehicl eequipment)
Underinflated or overinflated tires
Underinflated tires
GWARNIN G
Tires wit hpressur ethatist oolow can over-
heat and burs tasaconsequence .Inaddition ,
they also suffer from excessiv eand/o rirreg-
ular wear, whic hcan severely impair th ebrak -
ing properties and th edriving characteristics .
Ther eisar iskofana ccident.
Avoid tire pressures that are to olow in all th e
tires ,includin gthe spar ewheel.
Underinflated tires may:
Roverheat, leadin gtotired efects
Radversely affec thandlin g
Rwear excessively and/o runevenly
Rhav eana dverse effec tonfuel consumption
Overinflated tires
GWARNIN G
Tires wit hexces sively high pressur ecan burs t
because they are damaged mor eeasil yby
road debris, pothole setc.Ina ddition ,the y
also suffer from irregular wear ,whic hc an
severely impair th ebraking properties and th e
driving characteristics .Ther eisar iskofa n
accident.
260Tire pressure
Wheels and tires
Avoidtire pressures thata retoo high in al lthe
tires, including the spare wheel.
Overinflated tire smay:
Rincrease the braking distance
Radversel yaffect handling
Rwear excessivel yand/or unevenly
Rhave an adverse effect on rid ecomfort
Rbe more susceptibl etodamage
Maximum tire pressures
:Example: maximu mpermissibl etire pres-
sure
Never exceed the maximu mpermissibl etire
inflation pressure. Alway sobserve the recom-
mended tire pressure for your vehicl ewhen
adjusting the tire pressure (
Ypage 258).
iThe actual values for tire sarevehicle-spe-
cifi cand mayd eviate from the values in the
illustration.
Checkin gthe tire pressures
Important safety notes
Observ ethe notes on tire pressure
(Ypage 258).
Informatio nonairpressure for the tire sonyour
vehicl ecan be found:
Ron the vehicle's Tire and Loading Information
placard on the B-pillar
Ron the tire pressure labe lonthe fuel fille rflap
Rin the "Tire pressure" section
Checkin gtire pressure smanually
To determine and set the correct tire pressure,
procee dasfollows:
XRemove the valve cap of the tire thati stobe
checked.
XPress the tire pressure gaug esecurel yonto
the valve.
XRead the tire pressure and compar eittothe
recommende dvalue on the Tire and Loading
Informatio nplacard or the tire pressure table
(
Ypage 258).
XIf the tire pressure is too low, increase the tire
pressure to the recommende dvalue.
XIf the tire pressure is too high, release air. To
do so, press down the meta lpinin the valve,
using the tip of apen for example. The ncheck
the tire pressure agai nusing the tire pressure
checker.
XScrew the valve cap onto the valve.
XRepeat thes estep sfor the othe rtires.
Tire pressure loss warning system
(Canada only)
General notes
While the vehicl eisinmotion, the tire pressure
loss warning system monitors the set tire pres-
sure using the rotational speed of the wheels.
Thi senables the system to detect significant
pressure loss in atire .Ift he speed of rotatio nof
aw heel changesasa resultofa loss of pressure,
ac orresponding warning message will appear in
the multifunctio ndisplay.
Yo uc an recognize the tire pressure loss warning
by the Run Fla tIndicator Active Press
'OK'toR estartmessage which appear sin
the Serv.menu of the multifunctio ndisplay.
Informatio nonthe message display can be
found in the "Restarting the tire pressure loss
warning system "sectio n(
Ypage 262).
Important safety notes
The tire pressure warning system does not warn
youofani ncorrectly set tire pressure. Observe
the notes on the recommende dtire pressure
(
Ypage 258).
The tire pressure loss warning does not replace
the nee dtoregularly check the tire pressure. An
eve nlossofp ressure on severa ltire satt he
Tire pressure261
Wheel sand tires
Z
same time cannot be detected by the tire pres-
sure loss warning system.
The tire pressure monitor is not able to warn you
ofas udden loss of pressure, e.g. if the tire is
penetrated by aforeign object. In the event of a
sudden loss of pressure, bring the vehicle to a
halt by braking carefully .Avoid abrupt steering
movements.
The function of the tire pressure loss warning
system is limited or delayed if:
Rsnow chains are mounted on your vehicle's
tires.
Rroad conditions are wintry.
Ryou are driving on sand or gravel.
Ryou adopt avery sporty driving style (corner-
ing at high speeds or driving with high rates of acceleration).
Ryou drive with aheavy load.
Restarting the tire pressure loss warn-
ing system
Restart the tire pressure loss warning system if
you have:
Rchanged the tire pressure
Rchanged the wheels or tires
Rmounted new wheels or tires
XBefore restarting, make sure that the tire
pressures are set properly on all four tires for
the respective operating conditions.
The recommended tire pressure can be found
on the Tire and Loading Information placard
on the B-pillar. Additionally, atire pressure
table is attached to the fuel filler flap. The tire pressure loss warning system can only give
reliable warnings if you have set the correct
tire pressure. If an incorrect tire pressure is
set, these incorrect values will be monitored.
XAlso observe the notes in the section on tire
pressures (Ypage 258).
XMake sure that the SmartKey is in position 2
in the ignition lock (Ypage 115).
XPress the =or; button on the steering
wheel to select the Serv.menu.
XPress the9or: button to select
Tire Pressure.
XPress the abutton.
The Run Flat Indicator Active Press
'OK' to Restartmessage appears in the
multifunction display. If you wish to confirm the restart:
XPress the
abutton.
The Tire Pressure Now OK?message
appears in the multifunction display.
XPress the 9or: button to select Yes.
XPress theabutton.
The Run Flat Indicator Restartedmes-
sage appears in the multifunction display.
After ateach-in period, the tire pressure loss
warning system will monitor the set tire pres- sures of all four tires.
If you wish to cancel the restart:
XPress the %button.
or
XIf the Tire Pressure Now OK?message
appears, use the 9or: button to
select Cancel
.
XPress the abutton.
The tire pressure values stored at the last
restart will continue to be monitored.
Tire pressure monitor
General notes
If at ire pressure monitor is installed, the vehi-
cle's wheels have sensors that monitor the tire
pressures in all four tires. The tire pressure mon-
itor warns you if the pressure drops in one or
more of the tires. The tire pressure monitor only
functions if the corresponding sensors are
installed in all wheels.
Information on tire pressures is displayed in the
multifunction display. After afew minutes of
driving, the current tire pressure of each tire is
shown in the Serv.
menu of the multifunction
display.
Example: current tire pressure display
For information on the message display, refer to
the "Checking the tire pressure electronically"
section (
Ypage 264).
262Tire pressure
Wheels and tires
Important safety notes
GWARNING
Eac htire, includin gthe spar e(if provided),
should be checke datleast once amonth
when cold and inflated to th epressur erec-
ommended by th evehicl emanufacturer on
th eT irea nd Loading Information placard on
th ed river' sdoor B-pillar or th etirep ressur e
label on th einside of th efuel filler flap .Ifyour
vehicl ehas tires of adifferen tsizet hant he
siz eindicated on th eTirea nd Loading Infor -
mation placard or th etirep ressur elabel, you
should determine th eproper tire pressur efor
those tires .
As an added safet yfeature, your vehicl ehas
been equipped wit hatirep ressur emonitoring
system (TPMS) that illuminate salow tire pres-
sur etelltale when on eormoreofy our tires
are significantly underinflated. Accordingly,
when th elow tire pressur etelltale illuminates,
you should stop and chec kyour tires as soo n
as possible ,and inflat ethemtot heproper
pressure. Drivin gonasignificantly underin-
flated tire causes th etiretoo verheat and can
lead to tire failure. Underinflation also
reduce sfuel efficiency and tire tread life ,and
may affec tthe vehicle's handlin gand stop-
pin gability.
Pleas enotet hatthe TPM Sisn otas ubstitut e
for proper tire maintenance ,and it is th edriv-
er' sre
sponsibilit ytom aintai ncorrect tire
pressure, eve nifunderinflation has no t
reached th elevel to trigge rillumination of th e
TPM Slow tire pressur etelltale.
Your vehicl ehas also been equipped wit ha
TPM Smalfunction indicator to indicat eifthe
system is no toperating properly. The TPM S
malfunction indicator is combined wit hthe
low tire pressur etelltale. When th esystem
detects amalfunction ,the warning lamp will
flas hfor approximately aminute and then
remain continuously illuminated. This
sequenc ewill be repeated every time th evehi-
cle is started as lon gasthemalfunction
exists.
When th emalfunction indicator is illuminated,
th es ystem may no tbeable to detec torsignal
low tire pressur easintended. TPM Smalfunc -
tion smay occur for avariet yofr easons,
includin gthe installation of incompatible
replacemen toralternate tires or wheels on
th ev ehicl ethatp reven tthe TPM Sfromf unc-
tioning properly. Always chec kthe TPM Smal-
function telltale after replacing on eormore
tires or wheels on your vehicl etoensuret hat
th er eplacemen toralternate tires and wheels
allow th eTPM Stoc ontinue to function prop-
erly.
It is th edriver' sresponsibilit ytos et th etire
pressur etothatrecommended for cold tires
whic hiss uitable for th eoperating situation
(
Ypage 258). Not etha tthe correc ttirep ressur e
for th ecurren toperating situation must first be
taught-in to th etirep ressur emonitor. If there is
as ubstantial loss of pressure, th ewarning
threshold for th ewarning message is aligned to
th er eferenc evalue staught-in .Restart th etire
pressur emonitor after adjusting th epressur eof
th ec oldt ires (
Ypage 264). The curren tpres-
sures are saved as ne wreferenc evalues. As a
result ,awarning message will appear if th etire
pressur edrops sign ifica
ntly.
The tire pressur emonitor does no twarn you of
an incorrectl yset tire pressure. Observ ethe
note sont herecommended tire pressur e
(
Ypage 258).
The tire pressur emonitor is no table to warn you
of as udde nloss of pressure, e.g. if th etirei s
penetrated by aforeign object. In th eevent of a
sudde nloss of pressure, brin gthe vehicl etoa
halt by braking carefully. Avoid abrup tsteering
movements.
The tire pressur emonitor has ayellow warning
lamp in th einstrumen tcluste rfor indicating
pressur eloss or amalfunction .Whether th e
warning lamp flashes or lights up indicates
whether atirep ressur eistoolow or th etire
pressur emonitor is malfunctioning :
Rif thewarning lamp is lit continuously, th etire
pressur eononeor mor etires is significantly
to ol ow. The tire pressur emonitor is no tmal-
functioning .
Rif thewarning lamp flashes for aroun da
minute and then remain slit constantly, th e
tire pressur emonitor is malfunctioning .
Tire pressure263
Wheels and tires
Z
In addition to the warning lamp,amessage
appears in the multifunction display. Observe
the information on display messages
(
Ypage 196).
It may take up to ten minutes for amalfunction
of the tire pressure monitor to be indicated .A
malfunction wil lbeindicated by the tire pres-
sure warning lamp flashing for approximately
one minute and then remaining lit. When the
malfunction has been rectified, the tire pressure
warning lamp goes out after afew minutes of
driving.
The tire pressure values indicated by the on-
board computer may differ from those meas-
ured at agas station with apressure gauge. The
tire pressures shown by the on-board computer
refer to those measured at sea level.Ath igh
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.
The operation of the tire pressure monitor can
be affected by interference from radi otransmit-
ting equipment (e.g. radi oheadphones, two-way
radios) that may be being operated in or near the vehicle.
Checking the tire pressure electroni-
cally
XMake sure that the SmartKey is in position 2
in the ignition lock (Ypage 115).
XPress the =or; button on the steering
wheel to select the Serv.menu.
XPress the9or: button to select
Tire Pressure.
XPress the abutton.
The current tire pressure of each tire is shown
in the multifunction display.
If the vehicle has been parked for over
20 minutes, the Tire pressure will be
displayed after driving afew minutesmessag eappears.
After ateach-in process, the tire pressure mon-
itor automatically detects new wheelsorn ew
sensors. As long as aclear allocation of the tire
pressure valu etothe individual wheel sisnot
possible, the Tire
PressureMonitorActivedisplay messag eisshown instead of the tire
pressure display. The tire pressures are already
being monitored.
If an emergency spare wheel is mounted, the
system may continue to show the tire pressure of the wheel that has been removed for
afew
minutes. If this occurs, note that the valu edis-
played for the positionw here the spare wheel is
mounted is not the same as the current tire
pressure of the emergency spare wheel.
Tire pressure monitor warning mes-
sages
If the tire pressure monitor detects apressure
loss in one or more tires, awarning messag eis
shown in the multifunction display. The yellow
tire pressure warning lamp then lights up.
RIf the Please Correct Tire Pressuremessag eappears in the multifunction display,
the tire pressure in at least one tire is too low.
The tire pressure must be corrected when the
opportunity arises.
RIf the Check Tiresmessag eappears in the
multifunction display, the tire pressure in at
least one tire has droppeds ignificantly. The
tires must be checked.
RIf the WarningTireMalfunctionmessage
appears in the multifunction display, the tire
pressure in at least one tire has droppeds ud-
denly.T he tires must be checked.
Observe the instructions and safety notes in the
display messages in the "Tires" section
(
Ypage 196).
If the wheel positions on the vehicle are rotated,
the tire pressures may be displaye dfor the
wrong positions for ashort time. This is rectified
after afew minutes of driving, and the tire pres-
sures are displaye dfor the correct positions.
Restarting the tire pressure monitor
When you restart the tire pressure monitor, all
existing warning messages are deleted and the
warning lamp sgoout. The monitor uses the cur-
rently set tire pressures as the reference values for monitoring. In most cases, the tire pressure
monitor wil lautomatically detect the new refer-
ence values after you have changed the tire
pressure. However, you can also define refer-
ence values manually as describedh ere. The tire
pressure monitor then monitors the new tire
pressure values.
XSet the tire pressure to the valu erecommen-
ded for the corresponding driving situation on
the Tire and Loading Information placard on
the driver's side B-pillar(
Ypage 258).
264Tire pressure
Wheelsa nd tires