
It isrecommended that youh ave thet hawe d
batter ychec kedataq ualified specialis twork‐
shop.
All vehicles
* NO
TEDama gecaused bynumerouso r
ex tende dattem ptstos tart thee ngine
Nume rous or extende dattem ptstos tart the
engine ma ydamag ethe catalytic con verter
due tonon-combu sted fuel.
#Av oid numerous and extende dattem pts
to star tt he engine.
Obser vethef ollowing points during starting
assis tance and when chargingt he battery:
ROnlyuse undamaged jumper cables/charg‐
ing cables wit hanadequat ecross-section
and insulated term inal clamps.
RNon- insulated parts of thet erminal clamps
mus tnotcom eintoc ontact wi thother me tal
parts while thej umper cables/charging
cables ar econnected totheb atter yort he
jump-s tart connection point.
RThe jumper cables/charg ing cables mustnot
com eintoc ontac twitha nyparts whic hmay
mo vewhen thee ngine is running.
RAlw aysm akes uret hat neither youn orthe
batter yareelect rostaticall ycharged.
RKeep away from fire and open flames.
RDo no tlean overthe batter y.
RWhencharging: onlyuse batter ychar gers
te sted and appr ovedbyM ercedes-Benza nd
re ad theb atter ycharger's operating instruc‐
tions befor echarging theb atter y.
Obser vethea dditional following point sduring
st artin gassis tance:
RSt artin gassis tance ma yonly be pr ovided
using batteries wit hanominal voltag eof1 2
V.
RThe vehicles mus tnot to uch.
RGasoline engine: Onlyaccep tstartin ga ssis‐
ta nce if thee ngine and exhaus tsystema re
cold.
#Secur ethe vehicle byapplying thee lectric
parking brake.
#Au tomatic transmission: Shiftthet rans‐
mission toposition B.
#Makesuret hat thei gnition and all electrical
consumer sareswitched off.
#Open thee ngine hood.
#Slide co ver1 of positiv eterminal 2onthe
jump-s tarting connection point in thed irec‐
tion of thea rrow .
Breakdown assis tance 303

#Connect positiveterminal 2onyour vehicle
to thep ositiv epole of thed onor battery
using thej umper cable/charging cable.
Alw aysb egin wit hpositiv eclamp 2onyour
ow nv ehicle firs t.
#Du ring thes tarting assistance proce ‐
du re:st ar tt he engine of thed onor vehicle
and runati dles peed.
#Connect then egativ epole of thed onor vehi‐
cle and ground point 3ofyour ow nv ehicle
by usingt he jumper cable/charging cable.
Begin wit hthe donor batter yfirst .
#Du ring starting assist ance:star tt he
engine of your ow nv ehicle.
#During thec hargingp roce ss: star tt he
ch argingp rocess.
#During starting assist ance:lett he engines
ru nf or se veralm inutes.
#During starting assist ance:beforediscon‐
necting thej umper cables, switc honanelec‐
trical consumer on your ow nv ehicle, e.g. the
re ar wind owheater or thel ighting. When
thes tartin ga ssis tance/charging process
is compl ete:
#Fir st,r emo vethej umper cables/charging
cables from ground point 3and then ega‐
tiv ep ole of thed onor batter y,then from pos‐
itiv eterminal 2and thep ositiv epole of the
donor batter y.Begi neacht imew itht he con‐
ta cts on your ow nv ehicle firs t.
#Af terr emoving thej umper cables/charging
cables, close co ver1 of positiv eterminal
2.
Yo uc an obtain fur ther information on starting
assis tance at an yqualified specialis tworks hop.
To ws tarting or towing away
Towing away thev ehicle
Mercedes-Ben zrecommends transportin gyour
ve hicle in thec ase of abreakdown, rath er than
to wing it away. *
NO
TEDama getothev ehicle due to tow‐
ing away incor rectly
#Obser vethei nstruction sand no teso n
to wing away.
Pe rm itted towing me thods
RVe hicles wit htransmission damag emustb e
transpor ted(→pag e306).
RVehicles with automatic transmission:
onl yw ithb otha xlesont he ground.
R4MATIC vehicles: only wit hbotha xleso n
th eg round.
&
WARNING Risk of accident duetol imi‐
te ds afet y-re lated function sduring the
to wing process
Saf ety-re lated function sarelimited or no lon‐
ge ra vailable in thef ollowing situations:
Rthei gnition is switched off.
Rtheb rake system or po wersteering sys‐
te mism alfunctioning.
304
Breakdown assi stance

*NO
TEDama getothed rive trai ndueto
incor rect positioning
#Do no tposition thev ehicle abo vethe
connection point of thet ranspor tvehi‐
cle.
Installing thet ow ing eye
%
The towing eyeisp artoft hevehicle tool kit.
#Press them arkonc over 1 inwa rdsa nd
re mo ve.
#Scr ew inthet ow ing eye clockwise tothe
st op.
% Mak esuret hat co ver1 engages in the
bumper when your emo vethet ow ing eye. *
NO
TEDama gedue toincor rect us eof
th et ow ing eye
When atow ing eyeisu sedtoreco verav ehi‐
cle, thev ehicle ma ybedamaged in thep roc‐
ess.
#Onl yusethet ow ing eyetot owaway or
to ws tart thev ehicle.
Tows tarting thev ehicle (emer gency engine
st art)
* NO
TEDama getothea utomatic trans‐
mission due to towstarting
The automatic transmissionm aybe damaged
in thep rocess of tows tartin gv ehicles with
automatic transmission.
#Ve hicles wit hautomatic transmission
mus tnotbe tows tarted.
Breakdown assis tance 307

thes ystem is no toperating properly .The
TPMS malfunction indicator is combined with
th el ow tirep ressur eindicator lamp. When
th es ystem de tects am alfunction, thei ndica‐
to rlamp wil lflash fora pproxima tely am inute
and then remain continuously illumina ted.
This sequence will continue upon subsequent
ve hicle start-ups as longast he malfunction
ex ists.
When them alfunction indicator is illumina‐
te d, thes ystemm aynotbea bletodetect or
signal lo wtirep ressur easi ntended. TPMS
malfunctions ma yoccurf orav ariety of rea‐
sons, includingt he installation of incompati‐
ble replacemen toralternat etires or wheels
on thev ehicle that pr event theT PMS from
functioning proper ly.
Alw aysc hec kthe TPMS malfunction warning
lam pafter replacing one or mor etires or
wheels on your vehicle toensur ethat the
re placemen toralternat etires and wheels
allo wthe TPMS tocontinu etofunction prop‐
er ly.Using atirep ressur esensor ,the sy stem checks
th et irep ressur eoft he tires ins talled on the
ve hicle.
Ne wt irep ressur esensors, e.g. in winter tires,
ar ea utomaticall ytaught-in thef irst tim ethe
ve hicle is driven.
The tir epressur eappears inthem ultifunction
displa y(
→page197).
If th er eisas ubstantia lpressure loss or if the
tir et emperatur eisexcessive, awarning will be
given:
RVi ad ispla ymessages (→page382).
RViat he h warning lam pinthe instrument
clus ter(→pag e410).
It is thed rive r's responsibility tosetthe tire
pressur etotherecommended cold tir epressure
suitable fort he operating situation. Se tthe tire
pressur efor cold tires using atirep ressure
ga uge. Notethat thec orrect tir epressur efor the
cur rent operating situatio nmustfirst be taught-
in to thet irep ressur emonitoring sy stem.
In mos tcases, thet irep ressur emonitoring sys‐
te mw illautom atically updat ethe ne wreference va
lues af tery ou ha vechanged thet irep ressure.
Yo uc an,h ow ever,a lso updat ethe refere nce val‐
ues byrestartin gthe tir epressur emonitoring
sy stem manuall y(
→page318).
Sy stem borders
The tir epressur emonitoring sy stem does not
issue awarning:
RIfth et irep ressur eiss etincor rectly.
RIfth er eisas udden pressur eloss caused, for
ex ample, byaforeign object penetratin gthe
tire.
RIf th er eisam alfunction caused byano ther
ra dio signal source.
Be sur etoalso observ ethe following fur ther
re lated subjects:
RNo tesont irep ressur e(→page312)
Checking thet irep ressur ewitht he tir epres‐
sur em onitoring sy stem
Requ irements
RThe ignition is switched on.
Wheels and tires 317

On-boardcomputer:,Service.Tire Pressure
% The spelling ma ydiffe rint he main menu dis‐
pla yed. Therefore, obser vethem enu over‐
vie wf ortheI nstrument Displa yintheWide‐
screen Cockpit (
→pag e195).
One of thef ollowing displa ysappears:
RCur rent tir epressur eofe achw heel:
RTire pressure will be displayed after driving a
few minutes
RTire Pressure Monito rActive:t heteach-in
process of thes ystemisn ot yetcomple te. The tir
epressures ar ealready being moni‐
to re d.
#Compar ethe tir epressur ewitht he recom‐
mended tir epressur efor thec urrent operat‐
ing condition (
→pa ge 314). Observ ethe
no tesont iret emperatur e(→page312).
% The values displa yedint he multifunction dis‐
pla ym aydeviat efromt hose of thet irep res‐
sur egaug east heyr efer tosea le vel.At high
altitudes, thet irep ressur evalues indicated
by thep ressur egaug earehigher than those
shown bytheo n-boar dcomputer .Inthis
case, do no treduce thet irep ressure.
Be sur etoalso observ ethe following fur ther
re lated subjects:
RNo tesont irep ressur e(→page312)
Rest arting thet irep ressur emonitoring sys‐
te m
Prerequisites
RThe recommended tir epressur eisc orrectly
se tfor ther espectiv eoperating condition on
eac hoft hefour wheels(
→pag e312). Re
star tt he tir epressur emonitoring sy stem in
th ef ollowing situations:
RThe tir epressur ehaschanged.
RThe wheels or tires ha vebeen changed or
newl ymoun ted.
On-boar dcomputer:
,Service.Tire Pressure
% The spelling ma ydiffe rint he main menu dis‐
pla yed. Therefore, obser vethem enu over‐
vie wf orthei nstrument displa yinthe wide‐
screen cockpit (
→pag e195).
#Swip edownw ards on theT ouc hControl on
th el eft-hand side of thes teering wheel.
The Use Current Pressures as New Refer-
ence Values messageisshown in them ulti‐
function displa y.
#Pressatoconfir mthe ne wstart.
The Tire Press. Monito rRestarted messageis
shown in them ultifunction displa y.
Cur rent wa rning messages ar edeleteda nd
th eh yello ww arning lam pgoes out.
318
Wheels and tires

&WARNING ‑Riskoff irea nd injur yfrom
antifreeze
If antifreezec omes intocontact wi thhot
component parts in thee ngine compart‐
ment ,itmayignite.
#Allo wthe engine tocool down before
adding antifreeze.
#Make surethat no antifreeze spills out
next tothef iller opening.
#Thoroughl yclean of fany antifreeze
from component parts befor estarti ng
th ev ehicle.
* NO
TEDama gecaused byincor rect cool‐
ant
#Onl yadd coolant that has been pre‐
mixed wit hthe requ ired antifreeze pro‐
te ction.
Fu rther information on coolant
RIn theM ercedes-Benz Specification sfor
Operating Fluids 310.1, e.g. online at
http://be vo.mercedes-benz.com
RAt aq ualified specialis tworks hop
* NO
TEOverheating at high outsid etem‐
peratures
If an inappropriat ecoolant is used, the
engine cooling sy stem is no tsufficientl ypro‐
te cted agains toverheating and cor rosion at
high outside temp eratures.
#Alw aysu se an appropriat ecoolant.
Have thec oolant regularly changed at aqualified
specialis tworks hop.
The proportion of cor rosion inhibitor/antifreeze
concentrat einthe engine cooling sy stem should
be:
RAm inimum of 50% (antifreeze pr otection
down toappr oximatel y-35 °F (-3 7°C))
RAm aximum of 55% (antifreeze pr otection
down to-49 °F (-45 °C))
Fi lling capacities
Model Filling capacity
All models 12.7 US qt (12.0 l)
Note sonw indshield washer fluid
Obser vethen otes on operating fluids
(→pag e344).
&
WARNING ‑Riskoff irea nd injur yfrom
windshield washer concentrate
Wi ndshield washer concentrat eishighly
fl ammable. It coul dignit eifitc omes into
con tact wi thhote ngine component parts or
th ee xhaust system.
#Mak esuret hat no windshield washer
concentrat espills out next tothef iller
opening.
34 8
Tech nica ldata

Displaymessages
Possible causes/consequences and MSolutions
?
*Thefanm otorisf aulty.
#Avoiding high loads on thee ngine, driv eontothe neares tqualified specialis tworks hop. In doing so, ensur ethat
th ec oolant temp eratur edispla yremain sbelo w2 48 °F (120 °C).
#
See Operator's Manual *T
he batter yisnotbeing charge d.
* NO
TEPossible engine damag eifyou continue driving#Do no tcontin ue dr ivingunder an ycircum stances.
#Consult aqualified specialis tworks hop.
#Stop thev ehicle immediately ,paying attention toroad and traf ficc onditions ,and switc hoffthee ngine.
#Consult aqualified specialis tworks hop.
#
Start Engine See Opera-
tor's Manual *T
he engine is of fand theb atter ychar geleve list oo lo w.
#Switc hoffelectrica lconsumer sthat ar enotrequ ired.
#Leavethee ngine running foraf ewminutes, or driv efor alonger dis tance.
The batter yisbeing charge d.
Displa ymessages and warning/indicator lamps 37
9

Displaymessages
Possible causes/consequences and MSolutions
Tire Pressure Monitor Inop-
erative No Wheel Sensors *T
he wheels mounted do no thaves uitable tir epressur esensors. The tir epressur emonitoring sy stem is deactiva‐
te d.
#Mount wheels wit hsuitable tir epressur esensors.
h
Wheel Sensor(s) Missing *T
her eisnos ignal from thet irep ressur esensor of one or se veralw heels. The tir eaffected displa ysno pressure
va lue.
#Ha ve thef aulty tir epressur esensor replaced at aqualified specialis tworks hop.
SmartK ey
Displaymessages
Possible causes/consequences and MSolutions
Â
Place the Key in the
Marked Space See Opera-
tor's Manual*T
he SmartK eydetection function is malfunctioning.
#Chang ethe location of theS martK eyinthev ehicle.
#Startt he vehicle wit hthe SmartK eyinthes towa ge compartment .
Displa ymessages and warning/indicator lamps 385