
lead to function restrictions applying to
safety-relevant systems, e.g the lighting sys-
tem ,the AB S(anti-loc kbraking system) or the
ESP ®
(Electronic Stability Program). The oper-
atin gsafet yofy our vehicle may be restricted.
You could lose control of the vehicle, for
example:
R when braking
R in the even tofabrupt steerin gmanoeuvres
and/or when the vehicle's speed is not
adapted to the road conditions
There is arisk of an accident.
In the even tofashortcircuit or asimilar inci-
dent ,contac taqualified specialist workshop
immediately. Do not drive any further. Always have work on the battery carried out at a
qualified specialist workshop.
Further information about AB S(Ypage 77)
and ESP ®
(Y page 83). G
WARNING
Electrostatic build-up can lead to the creation of sparks, which could ignit ethe highly explo-
sive gases of abattery. There is arisk of an
explosion.
Before handlin gthe battery, touc hthe vehicle
body to remove any existin gelectrostatic
build-up.
The highly flammable gas mixture is created
while the battery is charging and when jump-
starting.
Always make sure that neither you nor the
battery is electrostatically charged. Electro-
static charge is created, for example:
R by wearing synthetic fibre clothing
R due to friction betwee nclothing and the
seat
R when you pull or push the battery across
carpe torother synthetic materials
R when you rub the battery with acloth G
WARNING
Durin gthe charging process, abattery produ-
ces hydroge ngas. If ashor tcircuit occurs or spark
sare created, the hydroge ngas can
ignite. There is arisk of an explosion.
R Make sure that the positive terminal of a
connected battery does not com eintoc on-
tac twith vehicle parts.
R Never place metal object sortools on abat-
tery.
R It is importan tthat you observe the descri-
bed order of the battery terminals when
connectin gand disconnecting abattery.
R When jump-starting, make sure that the
battery poles with identical polarit yare
connected.
R It is particularly importan ttoobserve the
described order when connectin gand dis-
connectin gthe jump leads.
R Never connec tordisconnect the battery
terminals while the engin eisrunning. G
WARNING
Batter yacid is caustic. There is arisk of injury.
Avoid contac twith the skin ,eyes or clothing.
Do not breathe in any battery gases. Do not
lean over the battery. Keep the batteries out
of the reach of children. Immediately rinse off
battery acid thoroughly with plent yofclean
water and seek medical attention at once. H
Environmental note Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and dispose dofinan
environmentally responsible
recyclin gsystem. Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to
aqualified spe-
cialist workshop or to acol-
lection point for used batter-
ies.
! Have the battery checked regularly at a
qualified specialist workshop. 402
Battery (vehicle)Breakdown assistance

Charging th
ebattery G
WARNING
During chargin gand jump-starting, explosive
gases can escape from th ebattery. Ther eisa
ris kofane xplosion.
Particularly avoid fire, naked flames, creating
sparks and smoking. Ensure there is sufficient
ventilatio nwhile chargin gand jump-starting.
Do no tlean ove rabattery. G
WARNING
Battery acid is caustic .Ther eisar iskofi njury.
Avoid contac twitht he skin, eyes or clothing.
Do no tbreath eina ny battery gases .Donot
lean ove rthe battery. Keep th ebatteries out
of th ereac hofc hildren. Immediately rinse off
battery acid thoroughly wit hplenty of clean
wate rand seek medical attentio natonce. G
WARNING
Ad ischarged battery can freez eattempera-
tures below freezing point. When jump-start-
ing th evehicle or chargin gthe battery, gases
can escape from th ebattery. Ther eisariskof
an explosion.
Allow th efroze nbattery to thaw out before
chargin gitorjump-starting.
! Only use battery chargers wit
hamaxi-
mum chargin gvoltage of 14.8 V.
! Only charge th
ebattery usin gthe jump-
start connection point.
The jump-startin gconnectio npointisint he
engin ecom partmen t(Ypage 405).
X Open th ebonnet.
X Connect th ebattery charge rtothepositive
terminal and eart hpointint hesame order
as when connecting th edonor battery in
th ej ump-startin gprocedure (Y page 405).
If th eindicator/warning lamps do no tlight up
at low temperatures, it is ver ylikely that the
discharged battery has frozen .Inthisc ase,
you may neither charge th ebattery no rjump-
start th evehicle .The servic elife of abattery that has been thawed may be reduced. The
starting characteristic smay be impaired,
especiall yatlow temperatures. Hav ethe
thawed battery checked at aqualified spe-
cialist workshop.
Never charge abattery still installed in the
vehicle unless abattery charge runit
approved by Mercedes-Ben zisbeingu sed. A
battery charge runit specially adapted for
Mercedes-Ben zvehicle sand tested and
approved by Mercedes-Ben zisavailabl easan
accessory. This device permits chargin gof
th eb attery in position. Contac taMercedes-
Ben zServic eCentr efor informatio nand avail-
ability. Read th ebattery charger's operating
instruction sbefore chargin gthe battery. 404
Battery (vehicle)Breakdown assistance

If
at yre size precedes atyre pressure, the
following tyre pressure information is only
validf or that tyre size.
Use asuitable pressure gauge to check the
tyre pressure. The outer appearance of atyre
does not permit any reliable conclusion about the tyre pressure. On vehicle sfitted with the
electronic tyre pressure monitor, the tyre
pressure can be checked using the on-board
computer.
If possible, only correct tyre pressures when
the tyres are cold.
The tyres are cold:
R if the vehicle has been parked with the tyres
out of direct sunlight for at least three
hours and
R if the vehicle has not been driven further
than 1.6 km
Depending on the ambient temperature ,the
vehicle speed and the loadont he tyres, the
tyre temperature and thus the tyre pressure
changes by approximately 10 kPa (0. 1bar/
1.5 psi )per 10 †. Take this into account
when checking the pressure of warm tyres.
Only correct the tyre pressure if it is too low
for the current operating conditions.
Driving with tyre pressure that is too high or
too low can:
R shorten the service life of the tyres
R cause increased tyre damage
R have anegative effect on handling charac-
teristics and thus driving safety (e.g. aqua-
planing) The tyre pressure values given for low loads
are minimum values which offer you good ride
comfort characteristics.
However, you can also use the values given
for higherl oads. These are permissible and
willn ot adversely affect the running of the
vehicle.
Speeds up to 210 km/h: despite the values
stated on the tyre pressure information label (fuel filler flap), for speedsupt o210 km/h
and with R16 tyres, the values stated can be
reduced as follows, withou tareduction in
safety:
R Saloon: Ò30 kPa (Ò0.3 bar/Ò4p si)
R Estate: Ò20 kPa (Ò0.2 bar/Ò3p si)
This does not apply to vehicle stowing a
trailer.
This improves the ride comfort of yourv ehi-
cle; however, fuel consumption may increase slightly. Tyre pressure lossw
arning system
General notes Whilet
he vehicle is in motion, the tyre pres-
sure loss warning system monitors the set
tyre pressure using the rotational speed of
the wheels. This enables the system to detect significant pressure loss in atyre. If the speed
of rotation of awhee lchanges as aresultofa
loss of pressure, acorresponding warning
messag ewilla ppear in the multifunction dis-
play.
You can recognise the tyre pressure loss
warning by the Run Flat Indicator Run Flat Indicator
active Restart with OK
active Restart with OK messagewhich
appears in the Serv.
Serv.menu of the multifunc-
tion display.I nformation on the messag edis-
playc an be found in the "Restarting the tyre
pressure loss warning system" section
(Y page 422). Tyre pressure
421Wheelsand tyres Z

Tyre pressure monitor
General notes If
at yrep ressure monitor system is fitted, the
vehicle's wheels have sensor sfitte dthat
monitor the tyr epressures in al lfou rtyres.
The tyr epressure monitor warns yo uifthe
pressure drops in one or mor eofthe tyres.
The tyr epressure monitor onl yfun ctions if
the corresponding sensor sarefitte dtoa ll
wheels.
Informatio nontyrep ressures is shown in the
multifunctio ndisplay .After afew minute sof
driving ,the current tyr epressure of each tyre
is shown in the Service
Service menu of the multi-
functio ndisplay ,see illustratio n(example). Example: Saloon
,current tyr epressure display
For furthe rinformatio nondisplaying this
message ,refer to the "Checking the tyr epres-
sure electronically" sectio n(Ypage 424).
Important safety notes It is the driver's responsibility to set the tyre
pressure to the recommende
dcoldt yrep res-
sure suitabl efor the operating situation
(Y page 420). Note tha tthe correct tyr epres-
sure for the current operating situatio nmust
first be taught-i ntothe tyr epressure monitor.
If ther eisas ubstantial loss of pressure, the
warnin gthreshold for the warnin gmessage is
aligned to the reference values taught-in.
Restart the tyr epressure monitor after
adjusting to the col dtyrep ressure
(Y page 424). The current pressures are
saved as new reference values. Thi swill
ensur ethataw arnin gm essage will only
appear if the tyr epressure drops significantly.
The tyr epressure monitor does not warn you
of an incorrectly set tyr epressure. Observe the note
sonthe recommende dtyrep ressure
(Y page 420).
The tyr epressure monitor is not able to warn
yo uofas uddenlossofp ressure, e.g .ifthe
tyr eisp enetrated by aforeign object. In the
event of asudde nlossofp ressure, bring the
vehicl etoah altbyb raking carefully. Avoid
abrupt steering manoeuvres.
The tyr epressure monitor ha sayelloww arn-
ing lamp in the instrument cluster for indicat- ing apressure loss or malfunction. Depending
on how the warning lamp flashe sorlights up,
at yrep ressure tha tist oo lo woram alfunc-
tio nint he tyr epressure monitor is indicated:
R if the warnin glam pisl itcontinuously ,the
tyr ep ressure on one or mor etyres is sig-
nificantl ytoo low. The tyr epressure moni-
tor is not malfunctioning.
R if the warnin glam pflashe sfor around a
minute and the nremains li tconstantly, the
tyr ep ressure monitor is malfunctioning.
In additio ntothe warning lamp, amessage
appear sinthe multifunctio ndisplay .Obser ve
the informatio nondisplay messages
(Y page 322).
It ma ytake up to ten minute sfor am alfunc-
tio noft he tyr epressure monitor to be indi-
cated. Amalfunctio nwillbei ndicated by the
tyr ep ressure warnin glam pflashing for
approximately one minute and the nremain-
ing lit. When the faul thas been rectified, the
tyr ep ressure warning lamp goes ou tafter you
have driven for afew minutes.
The tyr epressure values indicated by the on-
boar dcompute rmaydiffe rfromt hos em eas-
ured at afilling statio nusing apressure
gauge. The tyr epressures shown by the on-
boar dcompute rrefer to thos emeasured at
se al evel.Ath igha ltitudes, the tyr epressure
values indicated by apressure gaug eare
highe rtha nt hos eshown by the on-board
computer. In thi scase, do not reduce the tyre
pressures.
The operatio nofthe tyr epressure monitor
can be affecte dbyinterference fro mradio
transmitting equipment (e.g. radi ohead- Tyre pressure
423Wheelsand tyres Z

X
Remove th ekeyfrom th eignition lock.
or, on vehicles wit hKEYLESS‑GO:
X Ope nthe driver's door.
The on-boar delectronics no whaves tatus
0 .T his is th esam east hekeyh avin gbeen
removed.
X Remove th eStart/Sto pbutto nfromt he
ignition loc k(Ypage 179).
X If included in th evehicl eequipment,
remove th etyre-chang etoolkitfrom the
vehicl e(Ypage 395).
X Safeguar dthe vehicl eagainst rollin gaway.
i Apart from som
ecountry-specific var-
iants ,vehicles are no tequipped wit htyre-
changin gtools. Some tools for changin ga
whee lare specific to th evehicle. Fo rmore
information on whic htools are require dto
perfor mawheelcha ng eony our vehicle,
consult aqualified specialist workshop.
Necessary tyre-changin gtools may
include, for example:
R Jack
R Wheel chock
R Wheel wrench
Securing th evehicle against rolling
away If your vehicl
eisequipped wit hawheelchock,
it can be found in th etyre-chang etoolkit
( Y page 395).
The foldin gwhee lchock is an additional
securin gmeasure to preven tthe vehicl efrom rollin
gaway, for exampl ewhen changin ga
wheel.
X Fold bot hplates upwards :.
X Fold out lower plate ;.
X Guide th elugs on th elower plat efully into
th eo penings in base plate =. Securin
gthe vehicl eonlevel ground (example:
Saloon)
X On level ground: placechock soro ther
suitable items under th efront and rear of
th ew hee ltha tisd iagonally opposit ethe
whee lyou wish to change. Securin
gthe vehicl eons light downhill gradients
(example: Saloon)
X On sligh tdownhil lgradie nts:place
chocks or other suitable items in fron tof
th ew heels of th efront and rear axle.
Raisin gthe vehicle G
WARNING
If you do no tposition th ejackc orrectly at the
appropriat ejacking poin tofthevehicle, the Changing
awheel
427Wheels and tyres
Z