
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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Display messages Possible causes/consequences and
0050
0050Solutions 0039 Key not
detected
(re
dd isplay
message) The KEYLESS-GO key* is no
tinthevehicle. Awarnin gtone
also sounds.
Whe nyou switch th eengineo ff,y ou canno tloc kt he vehicle
centrall yorstart th eenginea gain.
X Pull ove rand stop th evehicl esafely as soo naspossible,
payin gattention to roa dand traffic conditions.
X Locate th eKEYLESS-GO key*. The KEYLESS-GO key* is no
tdetecte dwhile drivin gbecause
ap owerful radi otransmitte riscausin ginterfe rence. Awarn-
in gt onea lso sounds.
X Pull ove rand stop th evehicl esafely as soo naspossible,
payin gattention to roa dand traffic conditions.
X Remove th eStart/Sto pbutto nfromt heignition lock*
(Y page 66).
X Inser tthe keyintot he ignition loc kand tur nittot hedesired
position. 0039 Key not
detected
(whit
edis-
play mes-
sage) You wan
ttounlockorl ockt he vehicl eand th eKEYLESS-GO
key* canno tbecurrentl ydetecte dbythevehicle.
X Locate th eKEYLESS-GO key*.
If th eKEYLESS-GO key* is still no tdetected:
X Loc koru nlockthe vehicl eusingthe key. You are in th
evehicl eand th eKEYLESS-GO key* currently
canno tbedetecte dbythevehicle.
X Change th elocation of th ekeywit hthe KEYLESS-GO func-
tions* in th evehicle.
If th eKEYLESS-GO key* is still no tdetected:
X Remove th eStart/Sto pbutto nfromt heignition lock*
(Y page 66).
X Inser tthe keyintot he ignition loc kand tur nittot hedesired
position. 0039 Key still
in vehicle
The KEYLESS-GO key* has been detecte
dinside th evehicle
during locking.
X Remove th eKEYLESS-GO key* from th evehicle. 0039 Replace
key The ke
ymustber eplaced.
X Visit aqualified specialist workshop. 226
Display
messagesPractical advice
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Display messages Possible causes/consequences and
0050
0050 Solutions 0073 Malfunc‐
tio
nC on‐
sul tw ork‐
shop G
Risk of injury
The rol lbars are defective.
X Visit aqualified specialist workshop immediately. 0059 Converti‐
ble Top
Operation
possible
to 40 km/h If you drive at speeds of mor
ethan40k m/h,you canno topen
or close th eroof.
X Full yopen or close th esoftt op ( Ypage 161). 0059 Top lower‐
ing The sof
ttop is no tfull yo pened or closed .The hydraulic sare
depressurised.
X Full yopen or close th esoftt op ( Ypage 161). 0059 Open/
close top
completely The roo
fisnotlocked. If you drive at speeds of mor ethan
40 km/h, you canno topen or close th eroof.
X If you are drivin gatspeeds of mor ethan4 0km/ h,reduce
your speed.
X Push or pull th esoft-to pswitch (Y page 161), until th esoft
to pisf ullyo pen or closed. 0059 Top opera‐
tion
Please
wait The on-boar
dvoltag eistoolow.
X Start th eengine. The sof
ttop has been opened and closed several times in a
row .The soft-to pdrive has been switched of fautomatically
fo rs afet yreasons.
You can open and close th esoftt op again after approximately
te nm inute s(Ypage 161).
X Switc hoffthei gnition and tur nitbacko n.
X Repea tthe openin gorclosingprocedure. 00BE Top up
washer
fluid The washer flui
dlevel in th ewasher flui dreservoir has drop-
ped belo wthe minimum.
X Top up th ewasher flui d(Ypage 183). Display
messages
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Warning and indicator lamps in the instrument cluster
Problem Possible causes/consequencesa
nd0050
0050Solutions 0031
The yellow ABS
warning lamp is
lit while the
engine is run-
ning. G
Risk of accident
ABS (Anti-lock Brake System) is deactivated due to afault. For this
reason, ESP ®
(Electronic Stability Program), BAS (Brake Assist),
BAS PLUS* (Brake Assist PLUS), PRE-SAFE ®
,P RE-SAFE ®
Brake*,
the HOLD function, hil lstart assist and ESP ®
trailer stabilisation
are also deactivated, for example.
The brake syste mcontinues to function normally,b ut without the
functions listed above. Therefore, the wheels coul dlock if you
brake hard.
ATTENTION ASSIST is deactivated.
X Observe the additiona lmessages in the multi-function display
(Y pag e208).
X Drive on carefully.
X Visi taq ualified specialist workshop. 00BA
The red distance
warning lamp*
lights up while
the vehicl eisin
motion. G
Risk of accident
The distance to the vehicl einfront is too smal lfor the speed
selected.
X Increase the distance. 00BA
The red distance
warning lamp*
lights up while
the vehicl eisin
motion. Awarn-
ing tone also
sounds. G
Risk of accident
You are approaching avehicl einf ront at too grea taspeed
X Be prepared to brake immediately.
X Pay carefu lattention to the traffic situation. You may have to
brake or take evasive action. 00BA
The red distance
warning lamp*
lights up while
the vehicl eisin
motion. Awarn-
ing tone also
sounds. G
Risk of accident
Distronic Plus* has detected astationary obstacle in you rline of
travel .The vehicl ewilln ot be braked automatically.
X Be prepared to brake immediately.
X Pay carefu lattention to the traffic situation. You may have to
brake or take evasive action. 232
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Problem Possible causes/consequences and
0050
0050Solutions 00C6
The yellowE SP®
warning lamp
flashes while the
vehicle is in
motion. G
Risk of accident
ESP ®
or traction control has intervened because there is arisk of
skidding or at least one wheel has started to spin.
Cruise control or Distronic Plus* is deactivated.
X Only depress the accelerator pedal as far as necessary when
pulling away.
X Release the accelerator pedal while you are driving.
X Adapt your driving style to suit the road and weather conditions.
X Do not deactivate ESP ®
.
Exceptions: (Y page 55) 00C7
The yellow ESP ®
OFF warning
lamp is lit while
the engine is
running. G
Risk of accident
ESP ®
and ESP ®
trailer stabilisation are deactivated. ESP ®
will not
stabilise the vehicle if it starts to skid or if awheel starts to spin.
X Reactivate ESP ®
.
Exceptions: (Y page 55)
X Adapt your driving style to suit the road and weather conditions. 00C6
00C7
The yellow ESP
®
and ESP ®
OFF
warning lamps
are lit while the
engine is run-
ning. G
Risk of accident
ESP ®
,B AS,B AS PLUS* ,PRE-SAFE ®
,P RE-SAFE ®
Brake*, the
HOLD function, hill start assist, the adaptive brake lights and
ESP ®
trailer stabilisation are unavailable due to amalfunction.
ESP ®
will not stabilise the vehicle if it starts to skid or if awheel
starts to spin.
The brake system continues to function normally, but without the
functions listed above.
ATTENTION ASSIST is deactivated.
X Observe the additional messages in the multi-function display
(Y page 208).
X Drive on carefully.
X Visit aqualified specialist workshop. 0081
The red SRS
warning lamp is
lit while the
engine is run-
ning. G
Risk of injury
There is amalfunction in the restraint system. The airbags or belt
tensioners may either be triggered unintentionally or, in the event
of an accident, not be triggered at all.
X Visit aqualified specialist workshop immediately. Troubleshooting
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Problem Possible causes/consequences and
0050
0050Solutions 004D
The red brake
system warning
lamp comes on
while the vehicle
is moving. A
warning tone
also sounds. You are driving with the parking brake applied.
X
Release the parking brake.
The warning lamp goes out and the warning tone ceases. 004D
The red brake
system warning
lamp comes on
while the engine
is running. A
warning tone
also sounds. G
Risk of accident
There is insufficient brake fluid in the fluid reservoir.
X Pull over and stop the vehicle safely as soon as possible, paying
attention to road and traffic conditions. Do not continue driving
under any circumstances.
X Consult aqualified specialist workshop.
X Observe the additional messages in the multi-function display
(Y page 208).
Do not top up the brake fluid. This will not rectify the fault. 00AE
The red coolant
warning lamp
lights up while
the engine is
running and the
coolant temper-
ature gauge is at
the start of the
scale. The temperature sensor for the coolant temperature gauge is
faulty.
The coolant temperature is no longer being monitored. There is a
risk of engine damage if the coolant temperature is too high.
X
Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions. Do not continue
driving under any circumstances.
X Consult aqualified specialist workshop. 234
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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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Problem Possible causes/consequences and
0050
0050Solutions 0082
The red seat belt
warning lamp
lights up for six
seconds after
the engine is
started 42
. The seat belt warning lamp reminds the driver and front passenger
to fasten their seat belts.
X
Fasten your seat belt (Y page 76).0082
After the engine
starts, awarning
tone sounds for
up to six sec-
onds 42
. G
Risk of injury
The driver's seat belt is not fastened.
X Fasten your seat belt (Y page 76).
The warning tone ceases. 0082
The red seat belt
warning lamp
lights up after
the engine
starts, as soon
as the driver's
door or the
front-passenger
door is closed. G
Risk of injury
The driver or front passenger has not fastened their seat belt.
X Fasten your seat belt (Y page 76).
The warning lamp goes out. G
Risk of injury
There are objectsont he front-passenger seat.
X Remove the objectsf rom the front-passenger seat and stow
them safely.
The warning lamp goes out. 0082
The red seat belt
warning lamp
flashes and an
intermittent
audible warning
sounds. G
Risk of injury
The driver or front passenger has not fastened their seat belt. At
the same time, you are driving faster than 25 km/ho rhave briefly
drive nfaster than 25 km/h.
X Fasten yours eat belt(Ypage76).
The warning lamp goes out and the intermittent audible warning
ceases. G
Risk of injury
There are objects on the front-passenge rseat. At the same time,
you are driving faster than 25 km/h or have briefly drive nfaster
than 25 km/h.
X Remove the objects from the front-passenge rseat and stow
them safely.
The warning lamp goes out and the intermittent audible warning
ceases. 42
Only for certain countries. 236
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