
imum mark on the dipstick
,the engine or
catalytic converter could be damaged.
Have excess oil siphoned off.
X Replace cap 0046on the filler nec kand
tighten clockwise.
Ensure that the cap lock sintop lace
securely.
For further information on engine oil, see
(Y page 288). Coolant
Only chec kthe coolan tlevel when the vehicle
is on alevel surface and the engine has cooled
down.
X Turn the key to position 2(Y page 65) in
the ignition lock.
X Check the coolan ttemperature gauge in
the instrumen tcluster. G
Risk of injury
The cooling system is pressurised. Therefore,
only unscrew the cap onc ethe engine has
coole ddown. The coolan ttemperature gauge
must display less than 70 †. Otherwise, you
could be scalde difhot coolan tescapes.
The coolan texpansion tan kislocated in the
engine compartmen tonthe right when
viewed in the direction of travel. X
Slowly tur ncap 0046 half aturna nti-clock-
wise and allow excess pressure to escape.
X Turn cap 0046further anti-clockwise and
remove it.
There is sufficien tcoolan tinexpansion
tank 0047if the coolan tislevel with marks
008A in the filler nec kwhen cold or approx-
imately 1. 5cmhigher when hot.
X If necessary, top up with coolan twhich has
been tested and approved by Mercedes-
Benz.
X Replace cap 0046and tighten all the way to
the stop.
For further information on coolant, see
(Y page 290). Windscreen washer system/head-
lam
pcleaning system*
The washer fluid reservoir for the windscreen
washer system and headlamp cleaning sys-
tem *isl ocated in the engine compartment
on the left-han dside when viewed in the
direction of travel. i
Add windscreen washer concentrate to
the washer fluid all year round. G
Risk of fire
Windscreen washer fluid is highly flammable.
Fire ,naked flames and smoking are prohibi-
ted when handlin gwasher fluid concentrate.
! Only use washer fluid concentrate which
is suitable for plastic lamp lenses. Unsuit- Engine compartment
183Operation
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Once you have fitted the winter tyres:
X
Check the tyre pressures (Y page 186).
X Restart the tyre pressure loss warning sys-
tem (Y page 187). G
Risk of accident
If you fit the spare wheel* when driving with
winter tyres, bear in mind that driving stability
will be impaired owing to unstable cornering
characteristics caused by the different tyres.
You should therefore adapty our driving style
and drive carefully.
Have the spare wheel* replaced at the near-
est qualified specialist workshop which has
the necessary specialist knowledge and tools
to carry out the work required. Mercedes-
Benz recommends that you use aMercedes-
Benz Service Centre for this purpose. In par-
ticular, work relevant to safety or on safety-
related systems must be carried out at aquali-
fied specialist workshop. Snow chains
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains which
have been speciallya pproved for your vehicle
by Mercedes-Benz,ora re ofacorresponding
standard of quality.
If you intend to fit snow chains, pleaseb ear
the following points in mind:
R you may not attach snow chains to all
wheel-tyre combinations; see the "Tyres
and wheels" section in the "Technical data"
chapter.
R snow chains must not be fitted to emer-
gency spare wheels, e.g. a"Minispare"
emergency spare wheel.
R Fit snow chains only in pairs and only to the
rear wheels. Comply with the manufactur-
er's installation instructions.
Do not exceed the maximum permissible
speed of 50 km/h.
i You may wish to deactivate ESP ®
when
pulling awayw ith snow chains fitted (Y
page 54). This way,y ou can allowthe
wheels to spin in acontrolled manner, ach-
ieving an increased driving force (cutting
action). Winter driving
G
Risk of accident
Do not shift down for additional engine brak-
ing on aslippery road surface. This could
cause the drive wheels to lose their grip and
the vehicle could skid.
You should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Vehicles with manual transmission: engage
neutral.
X Vehicles with automatic transmission*:
shift the selector lever to N.
X Try to bring the vehicle under control by
using corrective steering. Driving tips
Rolling with the engines
witchedoff G
Risk of accident
Never switch the engine off while the vehicle
is in motion.
There is no power assistance for the steering
and the service brake when the engine is not
running.
You will require considerably more effort to
steer and brake and you could therefore lose
control of the vehicle and cause an accident. 190
Driving tipsOperation
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Coupling up
atrailer G
Ris
kofi njury
Do no tdisconnect atrailer wit hanengaged
overrun brake. Otherwise, your han dcould
become trapped between th ebumpe rand
trailer drawbar.
! Do no tdisconnect atrailer wit han
engaged overrun brake. Otherwise, your
vehicle could be damaged by th erebound-
ing of th eoverrun brake.
X Positio nthe trailer leve lbehin dthe vehicle.
X Couple up th etrailer.
X Establish th eelectrical connection
between th evehicle and th etrailer.
Driving tips G
Ris
kofa ccident
If the Check traile rhitch locking
mechanism message appear sinthemulti-
function display while th evehicle is in motion,
pull ove rimmediately and check whether the
ball couplin giscorrectly engaged.
i Observ ethe note sonE SP®
trailer stabi-
lisation (Y page 55).
In Germany, th emaximum permissible speed
for vehicle/trailer combinations depends on
th et ype of trailer and is either 80 km/h or
10 0k m/ h. In som ecountries ,higher maxi-
mum speeds are permissible for vehicle/
trailer combinations .Before beginnin gthe
journey, check th etrailer' sdocuments to see
what th emaximum permitted spee dis.
For certain Mercedes-Ben zvehicles, th emax-
imum permissible rear axle load is increased
when towing atrailer. Refer to th e"Technical
data" sectio ntofindo ut whether this applies
to your vehicle .Ifyou utilise any of th eadded
maximum rear axle load when towing atrailer,
th ev ehicle/trailer combinatio nmay not
excee damaximum spee dof100km/h for
reason sconcernin gthe operatin gpermit. This also applies in countries in whic
hthe
permissible maximum spee dfor vehicle/
trailer combinations is abov e100 km/h. G
Ris
kofa ccident
Always observ ethe maximum spee dpermit-
te dinG ermany for vehicle/traile rcombina-
tions ,eveninc ountries wher ehigher speeds
are permitted. This lower sthe riskofana cci-
dent.
When towing atrailer, your vehicle's handling
characteristic swill be different in comparison
to when driving without atrailer.
The vehicle/trailer combination:
R is heavier
R is restricted in its acceleratio nand gradi-
ent-climbin gcapability
R has an increased braking distance
R is affected mor ebystron gc rosswinds
R demands mor esensitive steering
R consumes mor efuel
On lon gand steep downhill gradients ,you
must selec talower gear in good time, or on
vehicle switha utomatic transmission*, select
shif trange 1,2or 3.
i This also applies if you have activated
cruise control, SPEEDTRONI CorDIS-
TRONIC PLUS*.
This will use th ebraking effect of th eengine,
so less braking will be required to maintain
th es peed. This relieves th eload on th ebrake
system and prevents th ebrakes from over-
heating and wearin gtoo quickly. If you need
additional braking ,depress th ebrak epedal
repeatedly rather than continuously. G
Ris
kofa ccident
Never depress th ebrak epedal continuously
while th evehicle is in motion ,e.g.n ever cause
th eb rakes to rub by applyin gconstant slight
pedal pressure .This causes th ebrak esystem
to overheat, increases th ebraking distance
and can lead to th ebrakes failin gcompletely. Trailer towing*
195Operation
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Display messages Possible causes/consequences and
0050
0050 Solutions Parking
Guidance inopera‐
tive
PARKTRONIC* is inoperative.
X
Observ ethe note sonP ARKTRONIC* in the
"Troubleshooting" section (Y page 243).Parking
Guidance cancelled
Parking Guidance
*isdeactivated, because:
R the vehicle is skidding.
R the sensors in the bumper sare dirty.
R am alfunction has occurred.
Aw arnin gtonea lso sounds.
X Reactivat eParking Guidance* later.
If the parking space symbol does not appear in the multifunc-
tion display at speeds below 30 km/h:
X Clean the bumper s(Ypage 202).
or
X Restar tthe engine.
or
X Visit aqualified specialist workshop. Parking Guidance* is deactivated, because you have left the
lane.
X Park again, and while doing so, observe the display mes-
sages in the multifunction display (Y page 142).Parking
Guidance finished The vehicle is parked.
Awarnin gtonea lso sounds.
The display message disappears automatically. Tyre pres‐
sure Check
tyres
G
Risk of accident
The tyre pressure loss warnin gsystem has detected asignif-
ican tloss in pressure. Awarnin gtonea lso sounds.
X Stop the vehicle without making any sudden steerin gor
braking manoeuvres .Pay attention to traffic conditions as
you do so.
X Check the tyres.
X Check the tyre pressure. If necessary, set the correc ttyre
pressure (Y page 186).
X If necessary, repair any defectiv etyre sorc hange the wheel
(Y page 263).
X Restar tthe tyre pressure loss warnin gsystem onc ethe tyre
pressure is correc t(Ypage 187). Display messages
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Display messages Possible causes/consequences and
0050
0050Solutions Run Flat
Indicator inopera‐
tive The tyr
epressur elossw arnin gsystem is faulty.
X Visit aqualified specialist workshop. Check
tyr
ep res‐
sures then
restart
Run Flat
Indicator Ad
isplay message fo rthe tyrep ressur elossw arnin gsystem
was shown.
X Se tthe correc ttyrep ressur efor all tyres (Y page 186).
X Restart th etyrep ressur elossw arnin gsystem
(Y page 187). PRE-SAFE inopera‐
tiv
eS ee
Owner's
Manual G
Risk of injury
Importan tfunction sofPRE-SAFE ®
hav efailed. Al lother occu-
pan tsafet ysystems ,e.g.a irbags, remain available.
X Visit aqualified specialist workshop. PRE-SAFE Functions
currently
limited
See Own‐
er'
sM an‐
ual G
Risk of accident
The PRE-SAFE ®
Brake *istemporarily inoperative if
R theD ISTR ONIC PLUS* cover in th eradiato rgrille is dirty.
R thes ensor sinthebumpers are dirty.
R itsf unction is impaire ddue to heav yrain or snow.
R ther ada rsensor system is temporarily inoperative, e.g. due
to electromagnetic radiation emitted by nearby TV or radio
station sorother source sofelectromagnetic radiation.
R thes ystem is outside th eoperating temperature range.
R theo n-bo ardv oltag eisinsufficient.
The PRE-SAFE ®
Brake *isoperational again and th edisplay
message disappear swhen
R thed irt( e.g. slush) drops away while you are driving.
R thes ystem detects that th esensor sare full yavailable
again.
R thes ystem is within th eoperating temperature range.
If th edisplay message continues to be displayed:
X Clean th eDISTR ONIC PLUS* cover in th eradiato rgrille
(Y page 202).
X Clean th ebumpers (Y page 202).
X Restart th eengine.
X Wait until th ebattery is charged sufficiently. 214
Display
messagesPractical advice
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Display messages Possible causes/consequences and
0050
0050 Solutions The poly-V-belt may hav
etorn. Awarnin gtonea lso sounds.
X Pull ove rand stop th evehicl esafely and switch of fthe
engine, payin gattention to roa dand traffic conditions.
X Chec kthe poly-V-belt.
X If th epoly-V-belt is not damaged: do notstart th eengine
again until th edisplay message disappears. Otherwise,
there is ariskofe ngined amage.
X If th epoly-V-belt is torn: do notcontinu edriving. Consult
aq ualified specialist workshop. 00AE The engin
efan is faulty.
X If th ecoolan ttem perature is less than 12 0†,you can
continue drivin gtotheneares tqualified specialist work-
shop.
X Avoid subjecting th eenginetoh eavyloads (e.g. drivin gin
mountainous terrain )and stop-and-g odriving. 00BF Top up
coolant
See Own‐
er'
sM an‐
ual The coolan
tlevel is to olow.
X Top up th ecoolant, observin gthe warnin gnotes before
doin gso( Ypage 183).
X If th ecoolan tneeds toppin gupmoreo ften than usual, have
th ee nginec oolan tsystem checke dataqualified specialist
workshop. 0049 Clean the
fue
lf il‐
ter There is water in th
efuel filter. The water mus tbedrained
off 40
.
X Visit aqualified specialist workshop. 0052 inopera‐
tiv
eS ee
Owner's
Manual G
Risk of accident
The powe rsteerin gassistanc eisreduced. You will need to
use mor eforce to steer .Awarnin gtonea lso sounds.
X Chec kwhether you are able to apply th eextra force
required.
X If you ar eabletos teer safely: carefully drive on to a
qualified specialist workshop.
X If you ar eunable to steer safely: do notdrive on .Contact
th en eares tqualified specialist workshop. 40
Only fo rcertai nvehicles. Display
messages
221Practical advice
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Problem Possible causes/consequences and
0050
0050Solutions 00AE
The red coolant
warning lamp
comes on while
the engine is
running. Awarn-
ing tone also
sounds. The coolant temperature has exceeded 130 †. The airflow to the
radiator may be blocked or the coolant level may be too low.
The engine is not being cooled sufficiently and may be damaged.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Allow the engine and coolant to cool.
X Make sure that the air supply to the radiator is not blocked, e.g.
by slush.
X Check the coolant level (Y page 183). Observe the warning
notes.
X If necessary, top up the coolant.
X Have the engine cooling system checked at aqualified specialist
workshop if the coolant needs topping up more often than usual.
If the coolant level is correct,t he electric radiator fan may be
faulty.
X Do not continue driving under any circumstances.
X Consult aqualified specialist workshop. 00BB
The yellow
engine diagnos-
tics warning
lamp lights up
while the engine
is running. Vehicles with
adiesel engine: the fuel tank has been run dry.
X Start the engine three to four times after refuelling.
Emergency running mode is cancelled. The vehicle need not be
checked. 00BB
The yellow
engine diagnos-
tics warning
lamp lights up
while the engine
is running. There may be
afault, for example:
R in the engine management
R in the ignition system
R in the exhaust system
R in the ignition system (for vehicles with petrol engines)
The emission limit values may be exceeded and the engine can
run in emergency mode.
X Have the vehicle checked as soon as possible at aqualified
specialist workshop. Troubleshooting
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Seat belt
Problem Possible causes/consequences and
0050
0050Solutions The seat-belt extender
is unable to be retrac-
ted.
G
Risk of injury
The seat-belt extender is defective.
X Push back the seat-belt extender with force.
X Have the seat-belt extender checked at aqualified specialist
workshop.
If the seat-belt extender is unable to be pushed back:
X Do not drive on.
X Consult aqualified specialist workshop. Fuel and fuel tank
Problem Possible causes/consequences and
0050 0050Solutions Fuel is leaking from the
vehicle.
G
Risk of explosion or fire
The fuel line or the fuel tank is defective.
X Turn the key to position 0(Y page 65) in the ignition lock imme-
diately and remove it.
X Do not restart the engine under any circumstances.
X Consult aqualified specialist workshop. The fuel filler flap can-
not be opened. The fuel filler flap is not released.
Or:
The key batteries are discharged.
X
Unlock the vehicle (Y page 249).
Or:
X Unlock the vehicle using the emergency key element
(Y page 249). The fuel filler flap is released, but the opening mechanism is jam-
med.
X
Consult aqualified specialist workshop. Troubleshooting
239Practical advice
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