Problem Possible causes/consequences and
0050
0050Solutions You hear
awarning
tone. The red distance warning lamp*
00BAlights up while the vehicle
is in motion.
X Observe the explanations for the distance warning lamp*
(Y page 232). Accident
Problem Possible causes/consequences and
0050 0050Solutions Fuel is leaking from the
vehicle.
G
Risk of fire
The fuel line or the fuel tank has been damaged. The leaking fuel
creates arisk of fire or explosion.
X Switch off the ignition immediately.
X Remove the ignition key.
Do not restart the engine under any circumstances. The leaking
fuel creates arisk of fire or explosion.
X Consult aqualified specialist workshop. You are unable to
determine the extentof
the damage.
X
Consult aqualified specialist workshop. You cannot detect any
damage.
X
Start the engine as normal. The active bonnet func-
tion (pedestrian protec-
tion) has been trig-
gered. Your vehicle has been involved in
afrontal collision.
X Reset the triggered active bonnet (pedestrian protection)
(Y page 256). The NECK-PRO head
restraint
sonthe driv-
er's and front-
passenger seats have
been triggered. Your vehicle has been involved in
arear-end collision.
X Reset the NECK-PRO head restraint s(Ypage 257). 238
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Engine
Problem Possible causes/consequences and
0050
0050Solutions The engin
ewill not
start. The HOLD function or Distronic Plus* is activated.
X
Switch off HOLD (Y page 136) or Distronic Plus (Y page 131).
X Try to start th eenginea gain. The engin
ewill not
start .You can hear the
starter motor operat-
ing. R
Ther eisam alfunctio nintheengin eelectronics.
R Ther eisam alfunctio ninthefuel supply.
R The on-board voltage is to olow because th estarter battery is
to ow eak or discharged.
X Before th enexts tart attempt ,tur nt he keyb ack to position 0
(Y page 65 )intheignition loc korpressthe Start/Sto pbut-
ton* until all th eindicator light sintheinstrumen tcluste rhave
gon eout.
X Try to start th eenginea gain (Y page 98). When doin gso,
remembe rtha te xcessively lon gand frequen tattempt stostart
th ee nginew ill drain th ebattery.
If th eengined oes no tstart after several attempts:
X Consult aqualifie dspecialist workshop. The engin
ewill not
start .You can hear the
starter motor operat-
ing .The reserv efuel
warning lamp is on and
th ef uel gauge
shows 0. The fuel tan
khas been run dry.
X Refuel th evehicle. The engin
ewill not
start .You canno thear
th es tarter motor. The on-board voltage is to
olow because th estarter battery is too
weak or discharged.
X Jump-start th evehicle (Y page 276).
If th eengined oes no tstart despite attempting to jump-star tit:
X Consult aqualifie dspecialist workshop. The starter motor was exposed to
athe rmal load that was to ohigh.
X Allo wthe starter motor to coo ldown for approximately two
minutes.
X Try to start th eenginea gain.
If th eengines till does no tstart:
X Consult aqualifie dspecialist workshop. Troubleshooting
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Problem Possible causes/consequences and
0050
0050Solutions Vehicles with
apetrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is
amalfunction in the engine electronics or amechanical
componentoft he engine control unit.
X Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at aqualified specialist
workshop.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it. The coolant tempera-
ture gauge shows a
value above 120 †.
The coolant warning
lamp may also light up
and awarning tone may
sound (Y page 107). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 183). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct,t
he radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
X If the coolant temperature is less than 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving. 242
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Automati
ctransmission* Problem Possible causes/consequences and
0050
0050Solutions The transmission has
problem
sshifting gear. The transmission is losing oil.
X
Hav ethe transmission checke dataqualified specialist work-
sho pimmediately. The acceleration ability
is deteriorating.
The transmission no
longer changes gear. The transmission is in emergenc
ymode.
It is only possible to shif tinto second gear and revers egear.
X Stop th evehicle.
X Mov ethe transmission to position P.
X Turn th ekeyin th eignition to position 0(Y page 65 )orpress
th eS tart/Sto pbutton* repeatedly until all indicator lamp sin
th ei nstrumen tcluste rgoo ut.
X Wait at least 10 seconds before restarting th eengine.
X Mov ethe transmission to position Dor R.
If D is selected, th etransmission shifts into secondgear;ifRis
selected, th etransmission shifts int orevers egear.
X Hav ethe transmission checke dataqualified specialist work-
sho pimmediately. PARKTRONIC*
Problem Possible causes/consequences and
0050 0050Solutions Only th
ered segments
in th ePARKTRONIC
warning display are lit.
You also hear awarning
tone for approximately
two seconds.
PARKTRONI Cisdeacti-
vated after approx-
imately 20 seconds and
th ei ndicator lamp in
th eP ARKTRONI Cbut-
to nl ights up. PARKTRONI
Chas malfunctioned and has switched itself off.
X If problem spersist, hav ePARKTRONI Cchecked ataq ualified
specialist workshop. Only th
ered segments
in th ePARKTRONIC
warning display are lit.
PARKTRONI Cisdeacti-
vated after approx-
imately 20 seconds. The PARKTRONI
Csensor sare dirt yorthere is interference.
X Clean th ePARKTRONI Csensor s(Ypage 202).
X Switc hthe ignition bac kon. Troubleshooting
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Problem Possible causes/consequences and
0050
0050Solutions Only the red segments
in the PARKTRONIC
warning display are lit.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds. The problem may be caused by an external source of radio or
ultrasound waves.
X
See if PARKTRONIC functions in adifferent location. Headlamps
Problem Possible causes/consequences and
0050 0050Solutions The headlamps are mis-
ted up on the inside. Air humidity is very high.
X
Drive with the headlamps switched on.
The headlamps are demisted after ashort distance. The headlamp housing is not sealed and moisture has been able
to enter.
X
Have the headlamps checked at aqualified specialist workshop. Windscreen wipers
Problem Possible causes/consequences and
0050 0050Solutions The windscreen wipers
are jammed. Leaves or snow, for example, may be obstructing the windscreen
wiper movement.T
he wiper motor has been deactivated.
X For safety reasons, you should remove the key from the ignition
lock.
X Remove the cause of the obstruction.
X Switch the windscreen wipers back on. The windscreen wipers
fail completely.
G
Risk of accident
The windscreen wiper drive is malfunctioning.
X Select another wiper speed on the combination switch.
X Have the windscreen wipers checked at aqualified specialist
workshop. The windscreen washer
fluid from the spray
nozzles no longer hits
the centre of the wind-
screen. The spray nozzles are misaligned.
X
Have the spray nozzles adjusted at aqualified specialist work-
shop. 244
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Replacing the wiper blades
G
Ris
kofa ccident
The windscreen will not longer be wiped prop-
erl yift he wiper blades are worn. Thi scould
prevent yo ufrom observing the traffic condi-
tions ,thereby causing an accident. Replace
the wiper blades twice ayear, ideall yinspring
and autumn. G
Ris
kofa ccident
The wiper arm scould star tmoving and cause
an injury if yo uleave the windscreen wipers
switched on.
Remove the key from the ignition lock before
replacing the wiper blades.
! To avoid damaging the windscreen wiper
blades, make sure that yo utouch only the
wiper arm of the windscreen wiper. To remove
X Remove the key from the ignition lock or
turn the key to position 0(KEYLESS-GO).
X Fol dthe wiper arm away from the wind-
screen unti litengages.
X Set the wiper blad eatright angle stothe
wiper arm. X
Remove the wiper blad efrom the retainer
on the wiper arm in the direction of the
arrow. Fitting
X Slide the new wiper blad einto the retainer
on the wiper arm in the opposite direction
to the arrow.
X Turn the wiper blad eparalle ltot he wiper
arm.
X Fol dthe wiper arm back onto the wind-
screen. Flat tyre
Flat tyre equipmen
tvariants
Your vehicl emay be equipped with:
R aT IREFIT kit (Y page 207)
R a" Minispare" emergency spare wheel*
(Y page 208)
R the MOExtended run-flat sys-
tem* (Y page 272) Preparing the vehicle
i Vehicl epreparation is not necessary on
vehicles with MOE tyres*.
X Stop the vehicl easfar away as possible
from traffic on solid ,non-slipper yand level
ground.
X Switch on the hazard warning lamps.
X Firmly depres sthe parking brake.
X Vehicles with manual transmission:
engage firs torreverse gear.
X Vehicles with automati ctransmis-
sion*: move the selector lever to P.
X All occupants mus tget ou tofthe vehicle.
Make sure that they are not endangered as
they get ou tofthe vehicle.
X Make sure that no one is nea rthe danger
are aw hilst awheel is being changed .Any-
one wh oisnot directl yassisting in the
wheel change should, for example, stand
behind the barrier.
X Switch off the engine. Flat tyre
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X
Vehicles withou tKEYLESS GO*:remove
the key from the ignition lock.
X Vehicles with KEYLES SGO*: openthe
driver' sdoor.
The on-board electronics have status 0,
which is the same as the key having been
removed.
X Ge toutof the vehicle.
X Close the driver' sdoor.
X Place the warning triangl e(Ypage 206) at
as uitabl edistance. Observe lega lrequire-
ments. Usin
gthe TIREFI Tkit
Yo uc an us ethe TIREFIT kit to sea lsmall
punctures, particularly thos einthe tyre tread.
Yo uc an us eTIREFIT at outsid etemperatures
dow nto- 20†. G
Risk of accident
In the following case syoursafety is especially
endangered, as tyre sealant is insufficient if:
R there are cuts or puncture sinthe tyre
greater than 4mm.
R the wheel rim is damaged.
R youh aved riven at very low tyre pressures
or on aflatt yre.
Do not drive any further. Consul taqualified
specialist worksho pwhich ha sthe necessary
specialist knowledg eand tool stocarryo ut
the work required.
Mercedes-Benz recommend sthat yo uuse a
Mercedes-Benz Service Centre for this pur-
pose. In particular, work relevant to safety or
on safety-related systems mus tbec arrie dout
at aq uali fied specialist workshop.
X Do not remove any foreign objects which
have penetrated the tyre ,e.g. screw sor
nails.
X Remove the TIREFIT kit, the accompanying
"max. 80 km/h "sticke rand the electri cair
pump from the stowag ewellu nderneath the luggage compartment floor
(Y
page 207). X
Affix part 0046of the sticke rwithin the driv-
er's field of vision.
X Affix part 0047of the sticke rnearthe valve
on the wheel with the defectiv etyre. G
Risk of injury
TIREFIT mus tnot come into contact with your
skin, eyes or clothing.
R If TIREFIT come sinto contact with your
eyes or skin, immediatel yrinse thoroughly
with clean water.
R Change ou tofclothing which ha scome into
contact with TIREFIT immediately.
R If an allergi creaction occurs, consult adoc-
tor immediately.
Kee pTIREFIT away from children.
R If TIREFIT is swallowed, immediatel yrinse
your mouth ou tthoroughly and drink plenty
of water.
R Do not induce vomiting. Consul tadoctor
immediately.
R Do not inhale TIREFIT fumes.
i If TIREFIT leaks out, allow it to dry .Itcan
then be removed like alayer of film.
If yo uget TIREFIT on your clothing, have it
cleane dassoona spossible with perchloro-
ethylene. 264
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If
ap ressure of 1. 8bar is not reached
after fiv eminutes:
X Switch off and disconnect th eelectric air
pump and driv ethe vehicle forwards or
backwards approximately 10 m.
This distributes th eTIREFI Tmoree venly.
X Pump up th etyrea gain. G
Ris
kofa ccident
If ap ressur eof1.8bar is no tachieve dafter
fiv em inutes, th etyreist oobadly damaged.
Do no tdrivea ny further. Consult aqualified
specialist worksho pwhichh as th enecessary
specialist knowledge and tools to carry out
th ew ork required .Mercedes-Ben zrecom-
mends that you use aMercedes-Ben zService
Centr efor this purpose. In particular, work
relevan ttosafety or on safety-related sys-
tems must be carried out at aqualified spe-
cialist workshop.
When atyrep ressure of at leas t1.8bar
is reached:
X Press on/off switch 0088on th eelectric air
pump to 0.
The electric air pump is switched off.
X Remove th eTIREFI Tkit from th ewheel.
! Afte ruse, exces sTIREFI Tmay run out of
th ef ille rhose. This may caus estains.
Therefore, plac ethe fille rhoseint heplastic
whic hcontai nedt he TIREFI Tkit.
X Stow away th eTIREFI Tkit,t he electric air
pump and th ewarning triangle.
X Pul lawa yimm ediately.
X Stop after driving for approximately ten
minute sand check th etyrep ressur ewith
th ee lectric air pump. G
Ris
kofa ccident
If th etyrep ressur eisnowlower than 1. 3bar,
th et yreist oobadly damaged. Do no tdrive
any further. Consult aqualified specialist
worksho pwhichh as th enecessary specialist
knowledge and tools to carry out th ework required
.Mercedes-Ben zrecommends that
you use aMercedes-Ben zServic eCentr efor
this purpose. In particular, work relevan tto
safety or on safety-related systems must be
carried out at aqualified specialist workshop.
X If th etyrep ressur eisstill at least 1. 3bar,
correct it (see fuel fille rflap for values).
To increase th etyrep ressure: switch on
th ee lectric air pump.
To reduce th etyrep ressure: open pres-
sure release screw 0071on pressure
gauge 0072.
X Drive to th eneares tworksho pand have the
tyr ec hanged there.
X Hav ethe TIREFI Tkit replace dassoonas
possible at aqualified specialist workshop,
e.g. at aMercedes-Ben zServic eCentre. G
Ris
kofa ccident
Do no texcee dt he maximum spee dof
80 km/h.
The "max .80km/h" label must be affixe din
th ed river' sfieldofv ision.
The vehicle's handlin gcharacteristic smay be
affected. H
Environmental note
Hav ethe used TIREFI Tkit disposed of profes-
sionally, e.g. at aMercedes-Ben zService
Centre.
X Hav ethe TIREFI Tkit replace devery four
years at aqualified specialist workshop,
e.g. aMercedes-Ben zServic eCentre. 266
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