2011 MERCEDES-BENZ E-CLASS CABRIOLET trailer

Display messages Possible causes/consequences and
M Solutions
6
Rea
rl eftm alfunc‐ tio
nC onsul twork‐ shop or
Rea rr ight malfunction Con‐
sul
tw orkshop G
Risk of injury
SRS has malfunctioned at th erear on th eleftorr ight.The 6
warnin glamp also lights up in th einstrument cluster.
X Visi taqualified specialist workshop. 6
Left
windowbag mal‐
function Consult
workshop or
Right windowba
gmalfunc‐ tion Consult work‐
shop G
Risk of injury
There is amalfunction in the left-han dand/or right-han dwindow-
bag. The 6warnin glamp also light supinthe instrumen tclus-
ter.
X Visit aqualified specialist workshop. Lights
i Display messages about LEDs:
This display message will only appear if all LEDs have failed. Displa
ymessages Possibl
ecauses/consequences and M Solutions
b
Lef
tc ornering light or
Right cor‐ nering light The left or right-hand cornering light is faulty.
X
Chec kwhether you are permitted to change the bulb yourself
(Y page 121).
or
X Visit aqualified specialist workshop. b
Left dipped beam
or
Right dipped beam The left or right-hand dipped-beamh
eadlamp is faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 121).
or
X Visit aqualified specialist workshop. b
Trailer left tail
lamp or
Trailer right tail lamp The left or right-hand trailer tail lamp is faulty.
X
Check whether you are permitted to change the bulb yourself.
or
X Visit aqualified specialist workshop. 238
Display messagesOn-boar
dcomputer and displays

Display messages Possible causes/consequences and
M Solutions
b
Traile
rlefti ndi‐ cator or
Trailer right indicator The lef
torright-han dtrailer tur nsignal lamp is faulty.
X Check whether you are permitted to change the bulb yourself.
or
X Visit aqualified specialist workshop. b
Trailer brak
elamp The trailer brak
elamp is faulty.
X Check whether you are permitted to change the bulb yourself.
or
X Visit aqualified specialist workshop. b
Rear
left indicator
or
Rear righ tindi‐ cator The rear left-han
dorrear right-han dturns ignal is faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 121).
or
X Visit aqualified specialist workshop. b
Fron
tleft indica‐ tor or
Fron tright indicator The front left-han
dorfront right-han dturns ignal is faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 121).
or
X Visit aqualified specialist workshop. b
Left
mirror indica‐
tor or
Righ tmir‐ ror indicator The tur
nsignal in the left-han dorright-han dexterior mirror is
faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 121).
or
X Visit aqualified specialist workshop. b
Thir
dbrakel amp The thir
dbrak elamp is faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 121).
or
X Visit aqualified specialist workshop. b
Left-han
dtail lamp/brake lamp or
Right-hand tail lamp/brake lamp The left or right-han
dtail lamp/brak elamp is faulty.
X Check whether you are permitted to change the bulb yourself
(Y page 121).
or
X Visit aqualified specialist workshop. Display messages
239On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
b
Intell
.Light Sys‐ tem inoperative The Intelligent Light Syste
misfaulty. The lights remain available
without the Intelligent Light System.
X Visit aqualified specialist workshop. b
Malfunction See
Owner's Manual The exterior lighting is faulty.
X
Visit aqualified specialist workshop. Vehicles with trailer tow hitch:
afuse may have blown.
X Check the fuses (Y page 313).
X If necessary, replace the blown fuse. Observe the warning notes
as you do so.
If the displaym essage continues to be displayed:
X Visit aqualified specialist workshop. b
AUTO
lights inoper‐
ative The light sensor is faulty.
X
Visit aqualified specialist workshop. b
Switch off lights The lights are still switched on when you leave the vehicle. A
warning tone also sounds.
X
Turn the light switch to Ã.Adaptive Main-beam
Assist inoperative Adaptive Highbeam Assist is faulty.
X
Visit aqualified specialist workshop. Adaptive Main-beam
Assist currently
unavailable See
Owner's Manual Adaptive Highbeam Assist is deactivated and temporarily inoper-
ative if:
R
the windscreen is dirty in the camera's field of vision.
R visibility is impaired due to heavy rain, snow or fog.
X Cleant he windscreen.
Adaptive Highbeam Assist is available again if:
R the dirt (e.g. slush) drops away while the vehicle is in motion.
R the system detectst hat the camera is fully operational again.
The Adaptive Main-beam Assist available again message
is displayed. Display messages
241On-board computer and displays Z

Display messages Possible causes/consequences and
M Solutions
C At leas
tone door is open. Awarning tone also sounds.
X Close all doors. _
Rea
rl efts eat backrest not locked
or
Rea rr ight seat backrest not locked G
Ris
kofi njury
The backres tinthe rear is not engaged on the left-hand and/or
right-hand side. Awarning tone also sounds.
X Push th ebackres tback until it engages. _
Front lef
tseat backrest not locked
or
Front right sea
tb ackrest not locked The driver'
sorfront-pa ssenger seat backres tisnot engaged. A
warning tone also sounds.
X Push the backrest back until it engages. j
Check trailer
hitch lock G
Risk of accident
The trailer tow hitch is not correctly engaged.
Aw arning tone also sounds.
X Stop th evehicle immediately, payin gattentio ntoroad and traf-
fic conditions, and switch off the engine.
X Apply the parking brake.
X Allow the trailer tow hitch ball coupling to engage in the end
position (Y page 206). J
Close boot separa‐
tor The boot separator is open.
X
Close the boot separator (Y page 92).D
Power
steering mal‐
function See Own‐
er's Manual G
Risk of accident
The power steerin gassistance is faulty.
You will need to use more force to steer.
Aw arning tone also sounds.
X Chec kwhether you are able to apply the extraf orce required.
X If you are able to steer safely: carefully drive on toaqualified
specialist workshop.
X If you are unable to steer safely: do not drive on. Contact the
nearest qualified specialist workshop. Display messages
251On-board computer and displays Z

Safety systems
Problem Possible causes/consequences and
M Solutions
J
The red brake system
warning lamp comes on
while the engine is run-
ning.
Awarning 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 Apply the parking brake.
X Consult aqualified specialist workshop immediately.
X Observe the additional display messages in the multifunction
display.
Do not top up the brake fluid. This does not correctt he error.!
The yellow ABS warning
lamp is lit while the
engine is running.
G
Risk of accident
ABS (Anti-lock Brake System) has been deactivated due to afault.
For this reason, BAS (Brake Assist), BAS PLUS, ESP ®
(Electronic
Stability Program), PRE-SAFE ®
,P RE-SAFE ®
Brake ,the HOLD func-
tion, hill start assist, the adaptive brake lights and ESP ®
trailer
stabilisation are also deactivated, for example.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTIONA SSIST is deactivated.
X Observe the additional displaym essages in the multifunction
display.
X Drive on carefully.
X Visit aqualified specialist workshop. !
The yellow ABS warning
lamp is lit while the
engine is running. A
warning tone also
sounds.
G
Risk of accident
EBD (electronic brake force distribution) is faulty. Therefore, ABS,
BAS,B AS PLUS, ESP ®
,P RE-SAFE ®
,P RE-SAFE ®
Brake, the HOLD
function, hill start assist, the adaptive brake lights and ESP ®
trailer
stabilisation, for example, are not available either.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTIONA SSIST is deactivated.
X Observe the additional displaym essages in the multifunction
display.
X Drive on carefully.
X Visit aqualified specialist workshop. Warning and indicator lampsint
he instrument cluster
257On-board computer and displays Z

Problem Possible causes/consequences and
M Solutions
Jäå!
The red brake warning
lamp, the yellowE
SP®
and ESP ®
OFF warning
lamps and the yellow
ABS warning lamp are
lit while the engine is
running. G
Risk of accident
ABS and ESP ®
are malfunctioning. Therefore, BAS,B AS PLUS,
EBD,P RE-SAFE ®
,P RE-SAFE ®
Brake, the HOLD function, hill start
assist, the adaptive brake lights and ESP ®
trailer stabilisation, for
example, are not available either due to amalfunction.
The brake system continues to function normally, but without the
functions listed above. The wheels could therefore lock if you
brake hard, for example.
ATTENTION ASSIST is deactivated.
X Observe the additional display messages in the multifunction
display.
X Drive on carefully.
X Visit aqualified specialist workshop. ä
The yellowE
SP®
warn-
ing 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 the vehicle is in motion.
X Adapt your driving style to suit the road and weather conditions.
X Do not deactivate ESP ®
.
For exceptions: (Y page 64).å
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 64).
X Adapt your driving style to suit the road and weather conditions.
If ESP ®
cannot be activated:
X Have ESP ®
checked at aqualified specialist workshop. 258
Warning and indicator lampsint
he instrument clusterOn-board computer and displays

Problem Possible causes/consequences and
M Solutions
äå
The yellowE
SP®
and
ESP ®
OFF warning
lamps are lit while the
engine is running. 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 not available due to amalfunction .ESP ®
will not
stabilise the vehicl eifitstarts to skid or if awheel starts to spin.
The brake system continues to function normally, but without the
functions listed above.
ATTENTIONA SSIST is deactivated.
X Observe the additional displaym essages in the multifunction
display.
X Drive on carefully.
X Visit aqualified specialist workshop. J
The red brake system
warning lamp comes on
while the vehicle is
moving.
Awarning 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. 6
The red SRS warning
lamp is lit while the
engine is running.
G
Risk of injury
The restraint systems are malfunctioning. The airbags or belt ten-
sioners may either be triggered unintentionally or, in the event of
an accident, not be triggered at all.
X Drive on carefully.
X Visit aqualified specialist workshop immediately. Warning and indicator lampsint
he instrument cluster
259On-board computer and displays Z

Cleaning th
eexhaust tail pipes Impurities combined wit
hthe effect sofroad
grit and corrosive environmental factors may
cause flash rust to form on the surface. You
can restore the original shine of the exhaust
tail pip ebycleaning it regularly ,especially in
winter and after washing.
! Do not clea nthe exhaust tail pipes with
alkaline-based cleaning agents, such as
wheel cleaner.
X Cleant he exhaust tail pipes with achrome
care product tested and approved by
Mercedes-Benz.
Cleaningt he trailer tow hitch The ball coupling must be cleaned if it
becomes dirty or corroded.
X Remove any rust using awire brush.
X Remove dirt with aclean, lint-free cloth or
ab rush.
! Do not clean the ball coupling with ahigh-
pressure cleaner. Do not use solvents. X
After cleaning, lightly oil or grease ball cou-
pling :.
X Check that the vehicle's trailer tow hitch is
working properly.
! Observe the note on care provided by the
trailer manufacturer.
i Maintenanceoft he ball coupling and
trailer tow hitch can also be performed at
aq ualified specialist workshop, e.g. a
Mercedes-Ben zService Centre. H
Environmental note
Dispose of oily and greasy cloths in an envi-
ronmentally-responsible manner. Interior care
Cleaningt he display X
Before cleaning the display, make sure that
it is switched off and has cooled down.
X Cleant he displays urface using acommer-
cially-available microfibre cloth and TFT/
LCD displayc leaner.
X Dry the displays urface usingadry micro-
fibre cloth.
! For cleaning, do not use any of the fol-
lowing:
R alcohol-based thinner or petrol
R abrasive cleaning agents
R commercially-available household clean-
ing agents
These may damage the displays urface. Do
not put pressure on the displays urface
when cleaning. This could lead to irrepara-
ble damage to the display.
Cleaningt he plastic trim G
WARNING
When cleaning the steering wheel boss and
dashboard, do not use cockpit sprays or
cleaning agents containing solvents. Cleaning
agents containing solvents cause the surface
to become porous, and as aresult plastic
parts may break away and be thrown around
the interior when an airbag is deployed, which
may result in severe injuries.
! Do not affix the following to plastic surfa-
ces:
R stickers
R films
R scented oil bottles or similar items
You could otherwise damage the plastic. Care
291Maintenance and care Z