2010 MERCEDES-BENZ E-CLASS CABRIOLET tyre pressure

X
Tighten the wheel bolts until they are fin-
ger- tight.
X Unscrew the cen tring pin.
X Tighten the last wheel bolt until it is finger-
tight.
Lowering the vehicle X
Turn the cran kofthe jac kanti-clockwise
until the vehicl eisonce agai nstanding
firmly on the ground.
X Place the jack to one side. X
Tighten the whee lbolts evenly in across-
wis epattern in the sequence indicated
(: toA). The tightening torque must be
130 Nm. G
Risk of accident
Have the tightening torque checked immedi-
ately after awheel is changed. The wheels
coul dwork loose if they are not tightened to
at orqu eof130 Nm.
X Turn the jack back to its initia lposition and
stor eitt ogether with the rest of the vehicle
tool kit in the stowage well under the boot
floor.
X AM Gvehicles and vehicles with AMG
equipment: whenafront whee lhas been
changed, insert the cover into the outer sill.
Vehicles with an emergency spare wheel:
X Transport the faulty wheel in the boot.
i When you are driving with the emergency
spare wheel fitted, the tyre pressure loss warning system cannot function reliably.
Only restart the tyre pressure loss warning
system when the defective wheel has been
replaced with
anew wheel. MOExtended run-
flat system
Th eM OEx tended run-flat system allo wsyou
to continue driving the vehicle even when one
or more tyres los eall air pressure.
The MOExtended run-flat system may only be
used in conjunction with the activated tyre
pressure loss warnin gsystem or with the acti-
vated tyre pressure monitor.
The maximum permissible distance which
can be driven in run-flat mode depends on the
load in the vehicle. It is 80 km if the vehicle
is partially laden and 30 km if fully laden.
The maximum permissible distance which
can be driven in run-flat mode is counted from
the moment the tyre pressure los swarning
appears in the multifunction displ ay.
Yo um ust not exceed amaximum spee dof
80 km/h. G
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The handling characteristics of your vehicle
deteriorate in run-flat mode, for example:
R when cornering
R when braking
R when accelerating rapidly
Adapt your driving style accordingly and avoid
sudden changes in direction and sudden
acceleration, as well as driving over obstacles
(i.e. kerbs, potholes), and driving off-road.
This is particularly the case when the vehicle
is heavily laden.
The maximum permissible distance that can
be driven in run-flat mode depends to alarge
exten tonthe loads placed on the vehicle. It
can be shorter due to high speeds, aheavy
load, sudden changes in direction, the road
surface condition, outside temperature, etc.,
or further if you driv ecarefully and conserva-
tively. 284
Flat tyreBreakdown assistance
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Vehicl
eequipment ............................ 298
Important safet ynotes .................... 298
Directives to be observed ................298
Maintenance and car eofwheels
and tyres ............................................ 299
Tyr epressures .................................. 299
Direction of rotation .........................302
Interchanging the wheels ................302
Wheel and ty recombinations ..........303 297Tyres and wheels
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example at
aMercedes-Benz Ser vice
Centre.
R When parking your vehicle, make sure that
the tyres do not ge tdeformed by the kerb
or other obstacles. If it is necessary to drive
over kerbs, speed humps or simila releva-
tions, try to do so slowly and at an obtuse
angle. Otherwise, the tyres, particularly the
sidewalls, can get damaged. Maintenance and care of wheels and
tyres
Checking wheels and tyres
R Regularly chec kthe wheels and tyres of
your vehicle for damage (e.g. cuts, punctu-
res, tears, bulges on tyres and deformation,
crack sorseverecorrosion on wheels), at
least ever y14d ays, as well as after driving
off-road or on rough roads. Damaged
wheels can cause aloss of tyr epressure.
R Regu larly check th etyre tread depth and
the conditio nofthe tread across the whole
widt hofthe tyr e(Ypage 299). If neces-
sary, tur nthe front wheels to full lock in
orde rtoi nspect the inner sid eofthe tyre
surface.
R All wheels must hav eavalve cap to protect
the valve against dirt and moisture. Do not
fit anything onto the valve (such as tyre
pressure monitorin gsystems) othe rthan
the standar dvalve cap or other valve caps
approved by Mercedes-Ben zfor your vehi-
cle.
R Regularly chec kthe pressur eofall the tyres
including the emergenc yspare wheel or the
spare wheel, particularly prior to long trips,
and correc tthe pressur easnecessary
(Y page 299). Ty
re tr ead G
Risk of accident
Bear in mind that:
R tyre grip decreases rapidly on wet roads
when the tread depth is less than 3mm.
Thus ,you should repl acet yres that have
insufficient tread.
R winter tyres sho uld bereplaced when the
trea ddepth is 4mmorl ess as they will no
longer provide adequat egrip.
R thet rea donat yre may not wear evenly.
Thus ,you should regularly chec kthe tread
depth and the condition of the tread across
the entire widt hofall tyres. If necessary,
turn the steerin gwheel so that you can see
the tyr etrea dm ore easily.
You coul dotherwise los econtrol of the vehi-
cle and cause an acciden tdue to the reduced
grip of the tyres on the road. Storing tyres
Store tyres that are not being used in acool,
dry and preferably dar kplace. Protect the
tyres against oil, grease, petrol and diesel. Cleaning tyres
! Do not use ahigh pressure jet with circu-
lar jet nozzles (concentrated-power jets) to
clean the tyres. The high pressure of the
water jet could damage the tyres. Always
replace damaged tyres. Tyr
epressures Recommended ty
repressures
You will find atable of tyre pressures for var-
ious operating conditions on the inside of
your vehicle's fuel filler flap.
The applicable value for the emergency spare
wheel is stated on the spare wheel and in the
technical data section. Tyr
epressures
299Tyresa nd wheels
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The applicable value for the maximum load on
the rea raxle during trailer towing is state don
the tyre pressure information label on the
insid eofy our vehicle' sfuel filler flap.
The load condition "partially laden" or "fully
laden" is defined in the table by the differing
number of passengers and amount of lug-
gage. The actual number of seats may vary
from this –more information can be found on
the vehicle' sregistra tion document.
If no other data is stated, the tyr epressures
specifie donthe fuel filler fla papply for all
tyres approved for this vehicle. If
at yre size precede satyre pressure, the tyre
pressure specification that follows is only
valid for that tyre size. Instead of the complete tyre size, it may be
that only the rim diameter is stated ,e.g.
R16. Rim diameter
:is part of the tyre size and
can be found on the tyre sidewall. G
Risk of accident
Tyre pressure that is either too hig hortoo low
has anegativ eeffect on the vehicle's driving
safety ,which coul dlead you to cause an acci-
dent. Therefore, you should regularly check
the pressur eofall the tyres, particularly prior
to long trips, and correc tthe pressure as nec-
essary.
To test tyr epressure, us easuitable pressure
gauge. The outer appearance of atyre does
not permit any reliabl econclusion about the
tyr ep ressure. G
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Do not fit anything else to the tyre valve other
than the standard valve cap. In particular, ret-
rofitted tyre pressure monitors which are
screwed on to the valve may overload it and
cause it to fail. Due to their design, the valve
is kept open continuously ,which ma ylead to
air loss. G
Risk of accident
Should the tyr epressure dro prepeatedly:
R check the tyr efor foreign bodies.
R chec kwhether the wheel is losing air or the
valve is leaking.
R make sur ethat only avalve cap approved
by Mercedes-Benz has been fitte donthe
tyre valve. 300
Tyre pressuresTyres and wheels
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Tyr
ep ressures that are too lo whave anega-
tiv ee ffect on vehicl esafety, which could lead
to your causing an accident.
If possible, you should only correc ttyre pres-
sures when the tyres are cold. Depending on
the ambien ttemperature, the speed you are
driving at and the load on the tyres, the tyre
temperatur eand thus the tyre pressure may
chang ebyapproximately 10 kPa (0. 1bar,
1.5 psi) per 10 †. Take this int oaccount
whe ncheckin gthe pressur eofwarm tyres
and only correct it if it is too low for the cur-
rent operating conditions.
Driving with tyre pressure that is too high or
too low can:
R shorten the servic elife of the tyres
R cause increased tyre damage
R have anegativ eeffect on handling charac-
teristi csand thus the driving safet y(e.g. by
causing aquapla ning)
i The tyr epressure values given for low
load sare minimum values which offe ryou
good rid ecomfor tcharacteristics.
However ,you can also use the values given
for higher loads. These ar epermissible and
will not adversely affect the running of the
vehicle. H
Environmenta
lnote
Check the tyre pressure regularly, at least
every 14 days. Tyr
epressure loss warning
Important safety notes Whil
ethe vehicle is in motion, the tyr epres-
sure loss warning system monitors th eset
tyr ep ressure using th erotational speed of
the wheels. This enables the system to detect
significant pressure loss in atyre. If the speed
of rotation of awheel changes as aresult of
al oss of pressure, acorrespondin gwarning
message will appea rinthe multifunction dis-
play. G
Risk of accident
The tyr epressure loss warning system does
not warn you of an incorrectly se ttyre pres-
sure. The table on the insid eofthe fuel filler
fla pw ill help you decide whether the tyre
pressures should be corrected.
The tyre pressure loss warnin gsystem does
not replace the need to regularly check your
vehicle's tyre pressures, since an even loss of
pressure on several tyres at the same time
cannot be detecte dbythe tyr epressure loss
warning system.
Th et yre pressure monitor is not able to warn
you of asudden loss of pressure, e.g. if the
tyre is penetrated by aforeign objec t.
In the event of asudden loss of pressure, bring
the vehicle to ahalt by braking carefully. Do
not make any sudden steering movements
when doing so.
The function of the tyre pressure loss warning
system is limited or delayed if:
R snow chains are fitted to your vehicle's
tyres.
R road conditions are wintry.
R you are driving on sand or gravel.
R you adopt avery sporty driving style (cor-
nering at high speeds or driving with high
rates of acceleration).
R you are towin gavery heavy or large trailer.
R you are driving with aheavy load (in the
vehicle or on the roof).
Resta rting the ty re pressur eloss warn-
ing system Restart the tyre pressure loss warnin
gsystem
if you have:
R changed the tyre pressure
R changed the wheels or tyres
R fitted new wheels or tyres
X Before restarting, consult the table of tyre
pressures on the insid eofthe fuel filler flap
to ensur ethat the tyr epressure in all four Tyre pressures
301Tyres andwheels
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tyre
siss etcorrectl yfor the respective
operating con ditions.
X Observe the note sinthe sectio nontyre
pressures (Y page 299). G
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The tyr epressure loss warning system can
only give reliable warnings if you have se tthe
co rrec ttyrep ressure.
If an incorrect tyre pressure is se t,these
incorrect values will be monitored.
At yre with insufficient pressure results in
vehicle instability when driving, thu sincreas-
ing the risk of an accident.
X Make sure that the key is in pos i-
tion 2(Ypage135) in the igniti onlock.
In the multifunction display you wil lsee the
standard display (Y page 197).
X Press the =or; button to select the
Service menu.
X Press the 9or: button to select
Tyre pressure.
X Press the abutton.
The multifunction display show sthe mes-
sage:
Ru nF lat Indicator active Restart
with OK
If you wish to confirm the restart:
X Press the abutton.
Th em ultifunction displa yshows the mes-
sage:
Tyre press. no wOK?
X Press 9or: to select Yes.
X Press the abutton.
Th em ultifunction displa yshows the mes-
sage:
Ru nF lat Indicator restarted
After ateach-in period, the tyr epressure
loss warning system wil lmonitor the set
tyr ep ressures of all fou rtyres. If you wish to cancel the restart:
X
Press the %button.
or
X If the Tyrepress. now OK? message
appe ars,use9 or: to select Can‐
cel.
X Press the abutton.
The tyre pressure values stored at the last
restart will continue to be monitored. Direction of rotation
Tyres with aspecified direction of rotation
have additional benefits, e.g. if there is arisk
of aquaplaning. You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tyre indicates
its correct direction of rotation.
You may fit an emergenc yspare wheel/spare
wheel against the direction of rotation.
Observe the tim erestric tion on use as well as
the speed limitation specified on the emer-
genc yspare wheel/spar ewheel. Interchanging th
ewheels G
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Interchange the front and rear wheels only if
they have the same dimensions: for example
size, offset, etc.
After every wheel interchange/change, have
the tightening torque checked at aqualified
specialist workshop that has the necessary
specialist knowledg eand tool stocarry out
the work required. Mercedes-Benz recom-
mends that you use aMercedes-Ben zService
Centr efor this purpose. In particular ,work
relevant to safet yoronsafety-related sys-
tems must be carried out at aqualified spe-
cialist workshop.
The wheel scould work loose if they are not
tightened to atorqu eof130 Nm. 302
Interchanging th
ewheelsTyres and wheels
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For safety reasons, Mercedes-Benz recom-
mends that yo
uonly use wheel bolts of the
correct size which hav ebeena pproved for
Mercedes-Benz vehicles.
The wear patterns on the fron tand rea rtyres
differ ,dependin gonthe opera tingconditions.
Interchange the wheels befor eaclear wear
pattern ha sform edon the tyr es.F ront tyres
typicall ywearm ore on the shoulder sand the
rea rtyre sint he centre.
On vehicles that have the same size front and
rear wheels, you can interchange the wheels
every 500 0kmto10,000 km depending on
the degre eoftyre wear. Do not reverse the
direction of tyre rotation.
Clea nthe con tact surface softhe wheel and
the brake disc thoroughly ever ytime awheel
is interchanged. Chec kthe tyr epressure and,
if necessary, restart th etyre pressure loss
warning system. Wheel and tyr
ecombinations Please bear the followin
ginmind
! For safety reasons, Mercedes-Ben zrec-
ommends that you only use tyres, wheels
and accessories which have been approved
by Mercedes-Ben zspecifically for your
vehicle. These tyres have been specially
adapted for use with the contro lsystems,
such as AB SorESP®
,a nd are marked as
follows:
R MO =Mercedes-Ben zOriginal
R MOE =Mercedes-Ben zOriginal Extended
(tyres with run-flat characteristics)
R MO1 =Mercedes-Ben zOriginal (AMG)
Only use Mercedes-Benz Original Extended
tyres on wheels that have been specifically
approved by Mercedes-Benz.
If you use other tyres, wheels and acces-
sories, Mercedes-Benz cannot accept any
responsibility for damage that may result
from this. Further informat ionabout tyres,
wheels and approved combinations can be obtained from any Mercedes-Benz Service
Centre.
! If you fit tyres other than those tested and
recommended by Mercedes-Benz, charac-
teristics such as handling, noise levels and
fuel consumption, etc. may be adversely
affected. In addition, when driving with a
load, tyre dimensional variations could
caus ethe tyres to com einto contact with
the bod ywork and axle components. This
could result in dam agetot he tyres or the
vehicle.
i Further information about tyres and
wheels can be obtained from any
Mercedes-Benz Servic eCentre.
i You will fin datable of tyre pressures on
the insid eofyourv ehicle' sfuel filler flap.
For further information on tyre pressure,
see (Y page 299).
i Notes on the vehicle equipment:
Always fit the vehicle:
R with tyres of the same size on agiven axle
(left/right)
R with the same type of tyres at agiven
time (summer tyres, winter tyres,
MOExtended tyres)
i Vehicles featurin gthe MOExtended run-
fla ts ystem are not equipped with the
TIREFIT kit.
It is therefore recommended that you addi-
tionally equip your vehicle with the TIREFIT
kit if you fit tyres that do not feature run-
flat properties, e.g. winter tyres.
AT IREFIT kit is availa blef rom any qu alified
specialist workshop, e.g. aMercedes-Benz
Ser vice Centre. Wheel and tyr
ecombinations
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E2
00 CGI 43
E2 20 CDI 43
E2 50 CGI 43
E2 50 CDI 43
E3 50
E3 50 CGI 43
E3 50 CDI 43 E5
00 R17 BA
Summer tyres
46 235/45 R17 94 W
or
235/45 R17 94 W
MOExtended
47 —
Winter tyres
235/45 R17 94 H
M+S
i
or
235/45 R17 94 H
M+S i
MOExtended 47
,48 235/45 R17 94 H
M+Si
or
235/45 R17 94 H
M+Si
MO
Exte nded 47, 48 Light-
alloy wheels 7.5J
x17H2ET45 7.5J
x17H2ET45 E2
00 CGI 43
E2 20 CDI 43
E2 50 CGI 43
E2 50 CDI 43
E3 50
E3 50 CGI 43
E3 50 CDI 43 E5
00 R18 BA Winter tyres
235/40 R18 95
HXL
M+S i 235/40 R1
895HXL
M+S i Ligh
t-alloy wheels 8.0J
x18H2ET45 8.0J
x18H2ET45 Mixed tyres
i FA:front axle, RA: rear axle
43 BlueEFFICI ENCY.
46 Cabriolet :not in combination with Sports package code 950/952, sports suspension code 48 6ordynamic
handling package code 483.
47 Tyres with run-flat characteristics and only in combination with an activated tyre pressure loss warning
syste mort yre pressure monitor.
48 Winter tyres for retrofitting. Only certain tyre brands are approved. Ask your Mercedes-Benz Service Centre
for more information. Wheel and tyr
ecombinations
305Tyres and wheels
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