2010 MERCEDES-BENZ E-CLASS CABRIOLET Owners Manual

Engine
Display messages Possible causes/consequences and
M Solutions
+ To
pup
coolant
See Own‐
er' sM an‐
ual Th
ec oolant leve listoo low.
X Top up th ecoolant ,obser ving the warning note sbefore
doin gso( Ypage 261).
X If th ecoolant needs toppin gupmoreo ften than usual ,have
the engin ecoolant system checked at aqualified specialist
workshop. ? Co
olant
Sto pv ehi‐
cle
Switch
engine off Th
ec oolant is to ohot.
Aw arning ton ealso sounds.
X Pull ove rand sto pthe vehicle safel yand switch off the
engine ,payin gattentio ntoroad and traffic conditions.
X Make sure that the air supply to the radiator is not blocked,
e.g. by snow, slush or ice.
X Wait until the display message disappears befor erestar ting
the engine. Otherwise, there is arisk of engine damage.
X Pay attention to the coolant tempera turedisplay.
X If the temperature increases again, visit aqualified special-
ist worksho pimmediately. Th
ep oly-V-belt ma yhave torn.
X Pull over and stop the vehicle safely and switch off the
engine, paying attention to road and traffic conditions.
X Open the bonnet.
X Check whethe rthe poly-V-belt is tor n.
If the poly-V -belt is torn:
! do not continue driving. The engine could otherwise over-
heat.
X Consult aqualified specialist workshop.
If the poly-V-belt is OK:
X Wait until the display messag edisappears before restarting
the engine. Otherwise, there is arisk of engine damage.
X Pay attention to the coolant tempera turedisplay.
X Visit aqualified specialist workshop. 222
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Displa
ymessages Possible causes/consequences and
M Solutions
? The fan motor is faulty.
X
If th ecoolant tem perature is less than 12 0†,you can
continue drivin gtothe nearest qual ified specialist work-
shop.
X Avoid subjecting th eenginetoh eavy loads, e.g. driving in
mountainous terrain, and stop-star tdriving. # Th
eb attery is not being charged.
Aw arning ton ealso sounds.
Possible causes are:
R af ault yalternator
R at orn poly-V-belt
R am alfunction in the elect ronics
X Pul lover and stop the vehicle safel yand switch off the
engine ,payin gattentio ntoroad and traffic conditions.
X Open the bonnet.
X Check whether the poly-V-belt is tor n.
If the poly-V -belt is torn:
! do not continue driving. The engine could otherwise over-
heat.
X Consult aqualified specialist workshop.
If the poly-V-belt is OK:
X Visit aqualified specialist workshop. 4 Check
eng. oil
lev. when
next refu‐
elling The engine oil level has dropped to
acriticallevel.
Aw arning ton ealso sounds.
X Chec kthe oil level (Y page 260).
X If necessary, top up the engin eoil (Y page 261).
X Hav ethe engin echecked for leak sifthe engin eoil needs
topping up more often than usual. C There is only
asmall amount of fue linthe fuel tan k.
X Refuel at the nearest filling station. 8 Reserve
fue
llevel Th
ef uel level has fallen below the reserve range.
The fuel tank must be filled at least to the reserve fuel level
to prevent impairment to the running of the engine.
X Refuel at the nearest filling station. Display messages
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Displa
ymessages Possible causes/consequences and
M Solutions
¸ Re
place
air
cleaner Vehicles with
adiesel engine: th eenginea ir filte risdirty and
must be replaced.
X Visit aqualified special istworkshop. ! Clea
nthe
fuel fil‐
ter Vehicles with
adiesel engine: there is water in the fuel filter.
The water must be drained off.
X Visit aqualified special istworkshop. Driving systems
Display messages Possibl
ecauses/ consequences and M Solutions
À Attention
Assist:
Drowsi‐
ness
detected Based on specific criteria, ATTENTION ASSIS
Thas deter-
mined that your concentration has waned. Awarning tone
also sounds.
X If necessary, take abreak.
During long journeys ,take regula rbreaks in good time so you
ge te noug hrest. À Attention
Assist
inopera‐
tive ATTENTION ASSIS
Tisf aulty.
X Visi taq ualifieds pecialist workshop. 12
0k m/h Maximum
speed
exceeded
Th
em aximum spee dhas been exceeded 38
.
X Driv eslower. Speed
Limit
Assist currently
unavaila‐
bl
eS ee
Owner's
Manual Spee
dLimit Assist is deactivated and temporarily inoperative
if:
R the windscreen is dirty in the camera’s field of vision.
R visibility is impaired due to heavy rain, snow or fog.
Speed Limit Assist is operational again and the display mes-
sage disappears when:
R the dirt (e.g. slush) drops away while the vehicle is in motion
R the system detects that the camera is fully operational
again.
If the display message continues to be displayed:
X Clean the windscreen. 38
Only for certain countries. 224
Display messagesOn-boar
dcomputer and displays
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Displa
ymessages Possible causes/consequences and
M Solutions
Sp
eed
Limit
Assist: Unavaila‐
ble in
thi
sc oun‐
try Spee
dLimit Assist is onl yavailable in certain countries.
X Drive on.
Speed Limit Assist is avai lable again as soon as you drive
into acountry in which its use is approved. Speed
Limit
Assist inopera‐
tive Speed Limit Assist is faulty.
X
Visit aqualified special istworkshop. HOLD Off The HOLD function is deactivated. The vehicle is skidding or
ac
ondition for activation is no longer met when the brake
pedal is firmly depressed. Awarning ton ealso sounds.
X Reactivat ethe HOL Dfunction later. Ra
dars en‐
sor deactiva‐
ted See
Owner's
Manual Th
er adar sensor system is deactivated.
X Check whether or not the radar sensor system ma ybeacti-
vated (Y page324).
X Switch on the rada rsensor system (Y page 208). Rada
rsen‐
sor deactiva‐
ted
autom.
See Own‐
er's Man‐
ual Vehicles with
anavigation system: the vehicle is close to a
radio telescop efacility and may therefore not transmit any
radar signals .The radar sensor system has switched off auto-
matically.
When Blind Spot Assist is activated, the yellow 9indicator
lamps light up in the exterior mirrors.
The followin gfunctions are not available:
R DISTRONIC PLUS (Y page 160)
R BAS PLUS (Y page 56)
R PRE-SAFE ®
Brake (Y page 59)
R Blind Spot Assis t(Ypage 184)
X Drive on.
These functions are available again as soon as the vehicle
is far enough away from the radio telescope facility
(Y page 324). Display messages
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Displa
ymessages Possible causes/consequences and
M Solutions
Bl
ind
Spot
Assist inopera‐
tive Blind Spot Assist is temporarily inoperative if:
R
you have established the electrical connection between the
trailer and your vehicle.
R the sensors are dirty.
R its function is impaired due to heavy rain or snow.
R the radar sensor syste misoutside the operating tempera-
ture range.
R the radar senso rsystem is temporarily inoperative, e.g. due
to electromagnetic radiation emitted by nearby TV or radio
stations or othe rsources of electromagnetic radiation
R the on-boar dvoltage is too low.
The yellow 9indicator lamps also light up in the exterior
mirrors.
X When towin gatrailer, confirm th edispla ymessage with
a.
When driving without atrailer:
Blind Spo tAssist is operational again and th edisplay message
disappears when:
R thed irt( e.g. slush) drops away whil ethe vehicle is in mot ion
R the system detects tha tthe sensor sare full yavail able
again.
R the radar sensor system is back within the operating tem-
peratur erange.
If the displ aymessage continues to be displayed:
X Cle anthe sensor s(Ypage 267).
X Restar tthe engine. Blind
Spot
Assist inopera‐
tive Blind Spot Assist is faulty.
The yellow
9indicator lamps also light up in the exterior
mirrors.
X Visit aqualified specialist workshop. Parking
Guidance inopera‐
tive PARKTRONIC is faulty.
X
Visit aqualified specialist workshop. 226
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Displa
ymessages Possible causes/consequences and
M Solutions
Pa
rking
Guidance cancelled Parking Guidance is deactivated
,because
R thev ehicl eiss kidding.
R thes ensor sare di rty.
R am alfunction has occurred.
Aw arning ton ealso sounds.
X Reactivat eParking Guidanc elater.
If the parking space symbol does not appear in the multifunc-
tion display at speeds below 30 km/h:
X Clean the sensor s(Ypage 26 7).
X Restart the engine.
or
X Visit aqualified specialist workshop. Parkin
gGuidance is deactivated, because you have left the
lane.
X Park again and, while doing so, observe the display mes-
sage sint he multifunction display. Parking
Guidance finished The vehicle is parked.
Awarning ton ealso sounds.
The display message disappear sautomatically. Display messages
227On-boar dcomputer and displays
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Displa
ymessages Possible causes/consequences and
M Solutions
DI
STRONIC
PLUS currently
unavaila‐
ble See
Owner's
Manual DISTRONIC PLUS is deactivated and is temporarily inopera-
tive if:
R
the DISTRONIC PLUS cover in the radiator grille is dirty.
R the sensors in the bumpers are dirty.
R the radar sensor syste mistemporarily inoperative, e.g. due
to electromagnetic radiation emitted by nearby TV or radio
station sorother sources of electromagnetic radiation.
R its function is impaired due to heavy rain or snow.
R the syste misoutside the operating temperature range.
R the on-board voltage is too low.
Aw arning ton ealso sounds.
DISTRONI CPLUSiso perational again and th edisplay mes-
sage disappears when:
R thed irt( e.g. slush) drops away whil ethe vehicle is in mot ion
R the system detects tha tthe sensor sare full yavail able
again.
R the system is within the operating temperature range.
If the displa ymessage continues to be displayed:
X Clean the DI STRONIC PLUS cover in the radiator grille
(Y page 267).
X Clea nthe bumper s(Ypage 267).
X Restar tthe engine. DISTRONIC
PLUS deactiva‐
ted
autom.
Se
eO wn‐
er's Man‐
ual Vehicles with
anavigation system: the vehicle is close to a
radio telescop efacility and may therefore not transmit any
radar signals .The radar sensor system has switched off auto-
matically .Awarning ton ealso sounds.
X Drive on.
DISTRONI CPLUSisa vailable agai nassoon as the vehicle
is far enough away from the radio telescope facility
(Y page 324). DISTRONIC
PLUS inopera‐
tive
DISTRONIC PLU
Sisfaulty. BAS PLUS and PRE-SAFE ®
Brake
may also have failed .Awarning ton ealso sounds.
X Visi taq ualifieds pecialist workshop. DISTRONIC
PLUS suspended You have depressed the accelerator pedal. DI
STRONIC PLUS
is no longe rcontr ollin gthe speed of the vehicle.
X Take your foot off the accelerator pedal. 228
Displa
ymessagesOn-boar dcomputer and displays
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Displa
ymessages Possible causes/consequences and
M Solutions
DI
STRONIC
PLUS --- km/h An activatio
nconditio nfor DISTRONIC PL USis no tfulfilled.
X If condition spermit ,drive faster than 30 km/h and store
the speed.
X Check activatio nconditions for DISTR ONIC PLUS
(Y page 160). DI
STRONIC
PLU Sa nd
SPEED‐
TRONIC inopera‐
tive DISTRONIC PLUS and SPEEDTRONIC are faulty.
Awarning
tone also sounds.
X Visit aqualified specialist workshop. Cr
uise
control
and SPEED‐
TRONIC inopera‐
tive Cruise control and SPEEDTRONIC are faulty.
Aw
arning ton ealso sounds.
X Visi taq ualifieds pecialist workshop. Cruise
control --
-k m/h Ac
ondition for activatin gcruis econtr olhas not been met.
You hav etrie dtos toreas peed below 30 km/ h,for example.
X If conditions permit, drive faster than 30 km/h and store
thes peed.
X Check the activation conditions for cruise control
(Y pag e158). Display messages
229On-board computer and displays
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