
Problem Possible causes/consequences and
0050
0050Solutions The fuel tank in
avehi-
cle with adiesel engine
has been run com-
pletely dry and the
engine will not start. There is air in the fuel system.
X
Refuel the vehicle (at least 5litres).
X Turn the ignition on for at least 10 seconds. Turn the key to
position 2(Y page 65) in the ignition lock.
X Start the engine continuously for up to 10 seconds until it runs
smoothly.
Or:
X Start the engine via the touch-start function. To do this, turn the
key to position 3(Y page 65) in the ignition lock and then release
it immediately.
The fuel system is now free of air.
If the engine does not start:
X Turn the ignition on again for at least 10 seconds. Turn the key
to position 2(Y page 65) in the ignition lock.
X Start the engine again continuously for up to 10 seconds until
it runs smoothly.
Or:
X Start the engine again via the touch-start function.
If the engine does not start after three attempts:
X Consult aqualified specialist workshop. 240
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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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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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Side windows
Problem Possible causes/consequences and
0050
0050Solutions As
ide window will not
close. An object is obstructing the side window and preventing it from
closing.
X
Remove the object(s).
X Close the side window. You cannot see the cause.
X
Close the side window with increased force or without the anti-
entrapment feature (Y page 95).Soft top (Cabriolet)
Problem Possible causes/consequences and
0050 0050Solutions The soft top will not
open or close. The ignition is not switched on.
X
Make sure that the key is in position 2in the ignition lock. The boot lid is open.
X
Close the boot lid (Y page 64). The boot separator is not closed.
X
Close the boot separator (Y page 162). The roll bars have been deployed.
X
Visit aqualified specialist workshop. The head restraint
sinthe rear compartmen tdonot retract auto-
matically.
X Lower the head restraint sinthe rear compartmen tmanually
(Y page 257). The soft-top mechanism or control system is defective.
X
Close the soft top with the emergency mechanism if necessary
(Y page 250).
X Visit aqualified specialist workshop. Troubleshooting
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Exterio
rmirrors Problem Possible causes/consequences and
0050
0050Solutions An exterio
rmirror has
been pushe dout of
position. Vehicle
swith exterio rmirror sthatc anno tbef olded in/out elec-
trically:
X Mov ethe exterio rmirror int othe correc tposition manually.
Vehicle swith electrically folding exterio rmirrors*:
X Press th emirror-foldin gbutton *(Ypage 73 )repeatedly until
you hear adistinc tclick.
The mirror housing is engaged again and you can adjust the
mirror as usual ( Ypage 73). Key
Problem Possible causes/consequences and
0050 0050Solutions You canno
tloc kor
unlock th evehicle
usin gthe key. The ke
ybatteries are discharged or nearly discharged.
X Poin tthe tip of th ekeyat th edriver' sdoor handle from adis-
tance of approximately 50 cm and tr ytou nlock or loc kthe
vehicle again.
If this does no twork:
X Loc koru nlock th evehicle usin gthe emergency ke yelement
(Y page 249).
X Chec kthe keyb atteries and replace them if necessary
(Y page 259). The ke
yisfaulty.
X Lock/unlock th evehicle as describe dinthe"Opening and clos-
ing in an emergency" sectio n(Ypage 249).
X Hav ethe keyc hecked at aqualifie dspecialist workshop. Troubleshooting
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Problem Possible causes/consequences and
0050
0050Solutions You can no longer lock
or unlock the vehicle
using KEYLESS GO*.
KEYLESS GO* is in standby mode because the vehicle has not
been unlocked for an extended period.
X
Pull the door handle and then turn the key to position 2in the
ignition lock. KEYLESS-GO* is malfunctioning.
X
Lock/unlock the vehicle using the remote control function of
the key. Point the tip of the key at the driver's door handle from
close range and press the 0036/0037button.
X Have the key checked at aqualified specialist workshop. There is interference from
apowerful source of radio waves.
X Lock/unlock the vehicle as described in the "Opening and clos-
ing in an emergency" section (Y page 249).You have lost
akey. X
Have the key cancelled at aMercedes-Benz Service Centre.
X Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. You have lost the emer-
gency key element.
X
Report the loss immediately to the vehicle insurers.
X If necessary, have the manual locks changed too. The key cannot be
turned in the ignition
lock. The key has been in position
0for aconsiderable time.
X Remove the key and reinsert it into the ignition lock.
X Check the starter battery and charge it if necessary
(Y page 273).
X Start the engine. The on-board voltage is too low.
X
Switch off non-essential consumers, e.g. seat heating* or inte-
rior lighting, and try to turn the key again.
If this does not work:
X Check the starter battery and charge it if necessary
(Y page 273).
or
X Jump-start the vehicle (Y page 276).
or
X Consult aqualified specialist workshop. 248
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Parking up the vehicle
Problem Possible causes/consequences and
0050
0050Solutions The vehicle is to be left
parked up for longer
than four weeks. The battery can be damaged through exhaustive discharge.
X
Disconnect the battery (Y page 275) or connect toatrickle
charger.
i Have the battery checked at aqualified specialist workshop,
e.g. aMercedes-Benz Service Centre. The vehicle is to be left
parked up for longer
than six weeks. Damage resulting from non-use may occur if the vehicle is parked
up for long periods.
X
Visit aqualified specialist workshop and seek advice. Locking/unlocking in an emergency
Emergency key element
If the vehicle can no longer be locked or
unlocked with the key, use the emergency
key element.
If you use the emergency key element to
unlock and open the driver's door or the boot
lid, the anti-theft alarm system* will be trig-
gered (Y page 58).
There are several waystot urn off the alarm:
X Press the 0036or0037 button on the key.
or
X Insert the key into the ignition lock.
or
X Press the Start/Stop button* in the ignition
lock. The key must be in the vehicle.
or
X Lock or unlock the vehicle using KEYLESS
GO*. The key must be outside the vehicle. Removing the emergency key element X
Push release catch 0046in the direction of
the arrow and at the same time remove
emergency key element 0047from the key. Unlocking the vehicle
If the vehicle can no longer be unlocked cen-
trally with the key or KEYLESS GO*:
X Remove the emergency key element from
the key (Y page 249). Locking/unlocking in an emergency
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