If
yo uh ave tocar ryout an yworkint he engine
compartment, touc ho nlyt he following compo‐
nents:
R Hood
R Engine oil filler openin gcap
R Washer fluid reser voir cap
R Coolant expansion reser voir cap &
WARNING Danger of bu rnsw hen open‐
ing theh ood
If yo uo pen theh ood when thee ngine has
ove rheated or during afireint he engine com‐
partment, youc oul dc om eintoc ontact wi th
ho tg ases or other escaping operating fluids. #
Befor eopening theh ood, allo wthe
engine tocool down. #
Inthee vent of afireint he engine com‐
partment, keep theh ood closed and call
th ef ires ervice. &
WARNING Risk of scalding from hot
coolant
The engine cooling sy stem is pressurized,
particular lywhen thee ngine is warm.Ify ou
open thec ap, youc oul dbes calded byhot
coolant spr aying out. #
Letthe engine cool down befor eopen‐
ing thec ap. #
When opening thec ap, wear pr otective
gl ove sand saf etyg lasses. #
Open thec ap slowl ytorelease pres‐
sure. Allo
wthe engine and thee ngine cooling sy stem
to cool down befor echecking thec oolant le velor
re filling coolant.
* NO
TEPaint wo rkdamag eduetocoolant If coolant
getsonp ainted sur faces, thep aint‐
wo rkcan be damaged. #
Addc oolant carefully. #
Remo vespilledc oolant. Checking
thec oolant le vel Example: coolant
expansion reser voir #
Park thev ehicle on an even sur face. #
Ope nthe hood (/ page173). #
Slow ly tu rncoolant expansion reser voir cap
1 half aturnc oun ter-clockwise and allow
exc ess pressur etoescape. #
Turn coolant expansion reser voir cap 1fur‐
th er and remo veit. #
Chec kthe coolant le vel.
Ther eise nough coolan tincoolan texpansion
re ser voir if thec oolant reaches theM AX
mar k.
Ad ding coolant #
Refill th ec oolant totheM AX mar konthe
coolant expansion reser voir.
Onl yuse coolan tappr oved byMercedes-Benzto
avo id damagin gthe engine cooling sy stem. #
Replace coolant expansion reser voir cap 1
and tigh tenina clockwise direction. #
Startt he engine. #
Aftera pproxima tely five minutes, switc hoff
th ee ngine again and allo wittocool down. #
Che ckthec oolant le vela ga in and add coolant
if necessar y.
% Obser
veadditional coolant information
(/ page239). 17 8
Maintenance and care
&
WARNING Risk ofexplosion during
ch argin gprocess and startin gassis tance
During thec harging process and starting
assis tance, theb atter ymayrelease an explo‐
siv eg as mixture. #
Avoid fire ,o pen flames ,creating spar ks
and smoking. #
Mak esuret hat ther eiss ufficient venti‐
lation du ring thec harging process and
during startin gassis tance. #
Do no tlea no verab atter y. &
WARNING Risk ofexplosion from afro‐
zen battery
Ad ischar gedb atter ymayfreeze at temp era‐
tures slightl yabove or belo wfreezing point.
During startin gassis tance or batter ycharg‐
ing, batter ygas ma ybereleased. #
Alwayst hawaf roze nb atter youtfirst
befor echarging it or per form ing starting
assis tance. If
th ew arning /indicator lamps do no tlight up in
th ei nstrument displa yaround or belo wfreezing
point, it is very likel ythat thed ischarged battery
has frozen.
In this case, obser vethef ollowing points:
R do no tgivet he vehicle startin gassis tance or
ch arge theb attery
R thes ervice lif eofabatterythat has been
th awe dmaybe reduced drastically
R thes tart-u pb ehavior ma ydeteriorate, partic‐
ularly at lo wtemperatures
R it is recommended that youh ave athawed
batter ychec kedataq ualified specialis twork‐
shop
* NO
TEDama gecaused bynume rous or
ex tende dattempts tostar tt he engine Numerous or
extende dattempts tostar tt he
engine ma ydamag ethe catalytic con verter
due tonon-combu sted fuel. #
Avoid numerous and extende dattem pts
to star tt he engine. Obser
vethef ollowing points during starting
assis tance and when chargin gthe battery:
R onlyuse undamaged jumper cables/charging
cables wit hasufficient cross-sectio nand
insula tedt erminal clamps
R non-insulated parts of thet erminal clamps
mus tnotcom eintoc ontact wi thother me tal
parts while thej umper cables/charging
cables ar econnected totheb attery/jump-
st ar tc onnectio npoint
R thej umper cables/charging cable mus tnot
come int ocontact wit hanyparts whic hmay
mo vewhen thee ngine is running
R alwa ys mak esuret hat neither youn orthe
batter yiselectros tatically charged
R alwaysk eep away from fire and open flames
R do no tlean overab attery
R when charging: onlyuseab atter ychar ger
th at has been tested and appr ovedby
Mercedes-Benza ndread theo perating
instruction sfor your charge rb efor echarging
th eb atter y.
Obser vethea dditional following point sduring
st artin gassis tance:
R startin gassis tance ma yonly be pr ovided
using batteries wit hanominal voltag eof12V
R thev ehicles mus tnot to uche acho ther
R vehicles with agasoline engine: only per‐
fo rm startin gassis tance when thee ngine and
ex haus tsystema recold #
Vehicles with abatter ymain switch: check
whe ther theb atter ymain switc hisswitched
on (/ page114). #
Secu rethev ehicle using thep arking brake. #
Vehicles with automatic transmission:
shif tthe transmission toposition 005D. #
Switc hoffthei gnition and all electrical con‐
sumers. #
Open theh ood (/ page173). Breakdown assis
tance 191
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
00AC *T
hefanm otorisd efective. #
Without ahigh engine load, continue tothen eares tqualified
specialis tworks hop. Ensur ethat thec oolant temp eratur edis‐
pla yremain sbelo w2 48 °F (120 °C).
003A Check Fuel Filter *T
hewatert hat has accumulate dinthewate rsepa rato rh as reached
th em aximum le vel. #
Drain thew ater separator (/ page180).
00B3
Engine Oil Level Cannot
Be Measured *T
he electrical connection totheo il le vels ensor has been inter rup‐
te dort he oil le vels ensor is defective.
The engin eoil le velh as fallen tothem inimum le vel. #
Visit aq ualified specialis tworks hop.
00B2
Engine Oil Pressure Stop
Switch Off Engine *D
ispla ymessag efor cer taine ngines only:
The engine oi lpressur eistoo lo w.
* NO
TEEngine damag ecaused bydriving wit hinsuf ficient
engine oil pressure #
Avoid driving wit hinsuf ficient engine oil pressure. #
Stop in asafel ocation immediately .Donotcontinue driving. #
Consult aqualified specialis tworks hop.
00B2
Check Engine Oil Level
(Add 1Liter) *D
ispla ymessag efor cer taine ngines only:
The engine oi llev el has fallen tothem inimum le vel.
* NO
TEEngine damag ecaused bydriving wit hinsuf ficient
engine oil #
Avoid long journe yswit hinsuf ficient engine oil. #
Che ckthee ngine oil le velatt he next fuel stop.
To pupe ngineoil (/ page176).
Obse rvet he no tesone ngine oil (/ page237).
00B2
Engine Oil Reduce Oil
Level *D
ispla ymessag efor cer taine ngines only:
The engine oi llev el is tooh igh.
* NO
TEEngine damag ecaused bydriving wit hexcess engine
oil #
Avoid long journe yswit he xcess engine oil. #
Visit aq ualified specialis tworks hop immediately and ha vethe
engine oil suctioned off.
00B2 *D
ispla ymessag efor cer tain engines only:
The engin eoil le velist oo lo w. 256
Displa ymessages and warning and indicator lamps
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
Engine Oil Level Low
Stop Vehicle Turn
Engine Off *
NO
TEEngine damag ecaused bydriving wit hinsuf ficient
engine oil #
Avoid long journe yswit hinsuf ficient engine oil. #
Stop in asafel ocation immediately .Donotcontinue driving. #
Switc hoffthee ngine. #
Chec kthe engine oil le vel.
Ad de ngin eoil (/ page176).
Obse rvet he no tesone ngine oil (/ page237).
00B2
Check Engine Oil At
Next Refueling *T
he engine oil le velh as fallen tothem inimum le vel.
* NO
TEEngine damag ecaused bydriving wit hinsuf ficient
engine oil #
Avoid long journe yswit hinsuf ficient engine oil. #
Che ckthee ngine oil le velatt he next fuel stop.
To pupe ngineoil (/ page176).
Obse rvet he no tesone ngine oil (/ page237).
003D
Stop Vehicle Leave
Engine Running *T
he battery's charge leve list oo lo w. #
Stop in asafel ocation immediately .Donotcontinue driving! #
Letthe engine run. #
Do no tcontinue driving unti lthe displa ymessag egoes out.
003D
StopV ehicle See Opera-
tor's Manual *T
he batter yisnolonger being charge da nd has reached an exces‐
sively lo wbatter ycharg eleve l.
* NO
TEPossible engine damag eifyou continue driving #
Do no tcontinue drivin gunde rany circum stances. #
Consult aqualified specialis tworks hop. #
Stop in asafel ocation immediately .Donotcontinue driving. #
Switc hoffthee ngine. #
Consult aqualified specialis tworks hop.
003D
12 VB attery See Opera-
tor's Manual *T
he engine is of fand theb atter ycharg eleve list oo lo w. #
Switc hoffelectrica lconsumer sthat ar enotrequ ired. #
Letthe engine runf or afew minutes or driv eanextende ddis‐
ta nce.
The batter yischarged.
003D
See Operator's Manual *T
he batter yisnolonger being charge d.
* NO
TEPossible engine damag eifyou continue driving #
Do no tcontinue drivin gunde rany circum stances. #
Consult aqualified specialis tworks hop. Displa
ymessages and warning and indicator lamps 257
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions #
Stop in asafel ocation immediately and switc hoffthee ngine. #
Consult aqualified specialis tworks hop.
00AC
Coolant Too Hot Stop
Vehicle Turn Engine Off *T
he coolant is tooh ot. #
Stop in asafel ocation immediately and switc hoffthee ngine. &
WARNING Danger of bu rnsw hen opening theh ood
If yo uo pen theh ood when thee ngine has overheated or during
af ireint he engine compartment, youc oul dc om eintoc ontact
wi th hotg ases or other escaping operating fluids. #
Befor eopening theh ood, allo wthe engine tocool down. #
Inthee vent of afireint he engine compartment, keep the
hood closed and call thef ires ervice. &
WARNING Risk of scalding from ho tcoolant
The engine cooling sy stem is pressurized, particularly when the
engine is warm.Ify ou open thec ap, youc oul dbes calded byhot
coolant spr aying out. #
Letthe engine cool down befor eopening thec ap. #
When opening thec ap, wear pr otectiv eglove sa nd saf ety
gl asses. #
Open thec ap slowl ytorelease pressure. #
Wait until thee ngine has cooled down. #
Ensur ethat thea ir supply tothee ngine radiator is no tobstruc‐
te d.
00AC Check Coolant Level See
Operator's Manual *T
he coolant le velist oo lo w. &
WARNING Risk of scalding from ho tcoolant
The engine cooling sy stem is pressurized, particularly when the
engine is warm.Ify ou open thec ap, youc oul dbes calded byhot
coolant spr aying out. #
Letthe engine cool down befor eopening thec ap. #
When opening thec ap, wear pr otectiv eglove sa nd saf ety
gl asses. #
Open thec ap slowl ytorelease pressure. *
NO
TEEngine damag eduetoinsuf ficient coolant #
Avoid long journe yswit hinsuf ficient coolant. #
Topupc oolant (/ page177).
Regeneratio nnot possi-
ble *N
otall condition shave been me tfor rege neration of thed iesel par‐
ticulat efilter . #
Continue driving as normal until all condition shave been me tfor
re ge neration of thed iesel particulat efilter. 258
Displa ymessages and warning and indicator lamps
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
The load condition of thed iesel particulat efilter is over50%a nd
th em essag estilla ppear sonthe instrument clus ter. #
Visit aq ualified specialis tworks hop. DEF (Diesel Exhaus
tFluid) Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
00E2
Refill Additive See Opera-
tor's Manual *
In addition, they ellow 00E2 DEFindicator lam plight supont he
instrument clus tera nd aw arning tone sounds.
The DEF supply ha sfallen belo wthe firs tw arning thre shold. #
Addatl east2.5gal(9. 5l)ofD EF (/pag e129).
The 00E2 DEF indica torlamp onl ydisappea rswhen thev ehicle
is stationar y,at thel ates tafter 20 seconds, as soon as you
switc hont he ignition or star tt he engine af tert opping up.
00E2
Refill Additive Starts
until Emerg. Op.: XXX
See Operator's Manual *I
na ddit ion, they ello wD EFindicator lam plight supa ndaw arning
to ne sounds.
The DEF supply ha sfallen belo wthe reser vemar k.
Af tert he messag eappear sfor thef irst time ,the remaining DEF sup‐
ply willl astfor appr oxima tely 12 00 mile s(19 00 km) .The engine can
th en onl ybestarted ano ther 16 times. The numbe rofremaining
engine starts XX(16to1)iss hown inthem essag eevery time the
engine is star ted. #
Addatl east2.5gal(9. 5l)ofD EF (/pag e129). The 00E2DEF
indica torlamp onl ydisappea rswhen thev ehicle is stationar y,at
th el ates tafter 20 seconds, as soon as yous wit ch on thei gni‐
tion or star tt he engine af tert opping up.
00E2
Refill Additive Emer-
gency Op.: XXX mph See
Operator's Manual *
In addition, they ello wD EFindicator lamp 00E2lightsupont he
instrument clus tera nd aw arning tone sounds.
If the Refill Additiv eEmergency Op.: XXX mph See Operator's Man-
ual displa ymessag eisshown, youc an only driv ethe vehicle at a
maximum speed of 5mph (8 km/h). #
Addatl east2.5gal(9. 5l)ofD EF (/pag e129).
The DEF indica torlamp 00E2 only disappea rswhen thev ehicle
is stationar y,at thel ates tafter 20 seconds, as soon as you
switc hont he ignition or star tt he engine af terr efilling.
0099
Additive System Fault
See Operator's Manual *
In addition, they ellow 00B9CheckEngine warning lam ponthe
instrument clus terl ights up and awarning tone sounds.
The DEF reducing agent is con taminated, diluted or is no tcompliant
wit hISO 222 41 . #
Have theD EFsuppl ytank cleaned an drefilled at aqualified spe‐
cialis tworks hop as soon as possible.
0099 Additive System Fault
Starts until Emerg. Op.: *
In addition, they ellow 00B9CheckEngine warning lam ponthe
instrument clus terl ights up and awarning tone sounds.
The DEF reducing agent is con taminated, diluted or is no tcompliant
wit hISO 222 41 . Displ
aymessa gesa nd warning and indicator lamps 259
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
XXX See Operator's Man-
ual The
exhaus tgas af tertre atment sy stem is defectiv eoranemissions-
re leva nt malfunction ha soccu rred. This malfunction or defect can
damag ethe exhaus tgas af tertre atment sy stem.
Af tert he messag eappear sfor thef irst time ,the engine can onl ybe
st ar teda nother 10 times. The numbe rofremaining engine starts XX
(1 0to1)iss hown inthem essag eevery time thee ngine is star ted. #
Visit aq ualified specialis tworks hop immediately.
0099 Additive System Fault
EmergencyO p.: XXX
mph See Operator's
Manual *
In addition, they ellow 00B9CheckEngine warning lam ponthe
instrument clus terl ights up and awarning tone sounds.
Yo uc an only driv ethe vehicle at amaximum speed of 5mph
(8 km/h). #
Visit aq ualified specialis tworks hop immediately. Ti
res Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
Tire Pressure Monitor
Inoperative No Wheel
Sensors *T
he ins talled wheels do no thave suitable tir epressur esensors. The
tir ep ressur emonitor has been switched off. #
Install wheels wit hsuitable tir epressur esensors.
0077
Tire Press .Sen.M issing *T
he tir epressur esensor signal is missing from one or mor etires.
No pressur evalue is displa yedf or thet ireinq uestion. #
Have thef aulty tir epressur esensor replaced at aqualified spe‐
cialis tworks hop.
Tire Press. Monitor Cur-
rently Unavailable *T
her eisi nterfere nce from apowe rful source of radio wav es As a
re sult, no signals from thet irep ressur esensor sare re ceived. The
tir ep ressur emonitor is temp orarily una vailable. #
Continue driving.
As soon as thec ause has been eliminated, thet irep ressure
monitor automaticall yswitches on.
0077 Warning Tire Malfunction *T
he pressur einone or mor etires suddenl yfalls. The wheel position
is shown. &
WARNING Risk of an accident from driving wi thaflat tire
Flat tires ar edangerous in thef ollowing ways:
R The tires can overheat and cause afire.
R The driving characteristics, as well as steering and braking,
ma ybeg reatl yimp aired.
Yo uc oul dthen lose contro lofthevehicle. #
Do no tdrive wit haf lat tire. #
Obser vethen otes on flat tires. In
fo rm atio nabout flat tires (/ page188). #
Stop thev ehicle in accordance wit hthe tra ffic conditions. 260
Displa ymessages and warning and indicator lamps
Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
Key Not Detected (red
displa ymessage) R
Youc anno tloc kt he vehicle centra lly. #
Ensur ethat thek eyis in thev ehicle.
If th ek eydetection function has amalfunction du etoastron gr adio
signal source, proceed as follo ws: #
Stop thev ehicle immediately ,paying attention toroad and traf‐
fi cc onditions. #
Place thek eyinthes lotf or startin gwitht he key( /pag e104).
00AF Key Not Detected (white
displa ymessage) *T
hekeyisc urrentl yn otdetected. #
Chang ethe key's position in thev ehicle. #
Ifth ek eyisstill no tdetected, star tt he engine wit hthe keyin
th es lot(/ page104).
00AF
Replace Key Battery *T
hekey's bat tery isflat. #
Chang ethe batter y(/pag e42).
00AF
Obtain aNew Key *T
hekeym ustber eplaced. #
Visit aq ualified specialis tworks hop. Ve
hicle Displa
ymessages
Possible causes/consequences and 0050 0050Solutions
00B2
Check Washer Fluid *W
asher fluid le velinw asherreser voir has fallen belo wthe minimum. #
Topupw asherfluid (/ page179). *A
tlea st one door is open. #
Close al lthe doors. *T
he hood is open. &
WARNING Risk of accident if thee ngine hood is unlatched
while driving
An unloc kede ngin ehood ma yopen up when thev ehicle is in
motion and bloc kyour vie w. #
Neveru nlatc hthe engine hood while driving. #
Befor eevery trip, ensur ethat thee ngine hood is latched. #
Stop in asafel ocation immediately. #
Close theh ood. 262
Displa ymessages and warning and indicator lamps