2010 MERCEDES-BENZ E-CLASS CABRIOLET check engine

Problem Possible causes/consequences and
M Solutions
Vehicles with
apetrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is
amalfunction in the engine electronics or amechanical
componen tofthe engin emanagement system.
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 display is showing
more than 120 †. The
coolant warning lamp
may also be lit and a
warning tone may
sound. (Y
page 192). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soo naspossible and allow the engin eand the coolant
to cool down.
X Check the coolant level (Y page261). Observe the warning
notes as you do so and top up the coolan tifnecessary. If the coolan
tlevel is correc t,the radiator fan may be faulty. The
coolant is too hot and the engine is no longe rbeing cooled suffi-
cien tly.
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. Manual transmission
Gear lever
Gear lever
!
Whe nshifting between 5thand 6thgear,
you should always push the gear lever all
the way to the right. Otherwise, you could
shift uninte ntionally into 3rdor4th gear
and damage the transmission. Do not exceed the maximum speed for the
individual gears.
Shiftin
gdown at too high aspeed (trans-
mission braking) can cause the engine to
overrev ,leading to engine damage.
! On long and steep downhill gradients,
especiall yifthe vehicle is laden or towing
at railer, yo umust shift into gear 1, 2or3
in good time. This uses the engine's braking
effect .This relieves the load on the brake
system and prevents the brakes from over-
heating and wearing too quickly. Neutral
Nwhen the ECO start/stop
functio nisactive
In neutral N,the engin eisswitched off when
the vehicle speed is below acertain threshold
and the clut chpedal is not depressed. Manual transmission
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:
To store the curren tspeed or ahigher
speed
; LIMi ndicator lamp
= To sto rethe curren tspeed or call up the
last stored speed
? To stor ethe curren tspeed or alower
speed
A To switc hbetween cruise control and var-
iable SPEEDTRONIC
B To deactivate cruise control
When you activate cruise control ,the stored
speed is shown in the multifunction display
for fiv eseconds. In the multifunction display,
the segments between the stored speed and
the maximu mspeed light up.
Selecting cruise control X
Check whether LI Mindicator lamp ;is off.
If it is off, cruise contro lisalready selected.
If it is not ,pres sthe cruise contr ol leverin
the direction of arrow A.
LIM indicator lamp ;in the cruise control
lever goe sout. Cruise contro lisselected.
Storing and maintaining the cur rent
speed You can stor
ethe curren tspeed if you are
drivin gfaster than 30 km/h. X
Accelerat ethe vehicle to the desired
speed.
X Briefly press the cruise contr ol lever
up : or down ?to the pressure point.
X Remove your foot from the accelerator
pedal.
Cruise contr ol is activated. The vehicle
automatically maintains the stored speed.
i Cruise contr ol maybeu nable to maintain
the sto reds peed on uphill gradien ts.T he
stored speed is resumed when the gradient
even sout. Cruise contro lmaintains the
stored speed on downhill gradients by
automatically applying the brakes.
i Vehicles with manual transmission:
R Always driv eatadequate, but no texces-
sive, engine speeds.
R Chang egearing oodt ime.
R If possible, do not change down several
gears at atime.
Storin gthe curre nt speedorc allingup
the last stored speed G
Risk of accident
Only call up astored spe ed ifyou know what
that spee disand if it is suitable for the current
traffic and driving situation. You can other-
wise endanger yourself or others by uninten-
tionally triggering sudden acceleration or
braking.
X Briefly pull the cruise control lever towards
you =.
X Remove your foot from the accelerator
pedal.
Th ef irst time cruise control is activated, it
stores the current speed or regulates the
speed of the vehicle to the previously
stored speed. Drivin
gsystems
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mus
talsoa pply the brakes yourself if this
braking powe risnot sufficient.
If DISTRONIC PLU Sdetect sarisk of collision
with avehicle in front, an intermit tent warning
tone sounds. In addition, the ·distance
warning lamp in the instrument cluste rlights
up. Brak etoavoidac ollision.
Cruise control lever With the cruise control lever you can operate
DI ST RONIC PLUS and variable SPEE D-
TRONIC.
The LI Mindicator lamp on the cruise control
lever indicates which system you have selec-
ted:
R LIM indicator lamp off: DISTRONIC PLUS
is selected
R LIM indicator lamp on: variable SPEED-
TRONIC is selected. :
To sto rethe curren tspeed or ahigher
speed
; To set the specified minimum distance
= LIMi ndicator lamp
? To sto rethe curren tspeed or call up the
last stored speed
A To stor ethe curren tspeed or alower
speed
B To switc hbetween DI STRONIC PLUS and
variable SPEEDTRONIC
C To deactivate DISTRONIC PLUS Selecting DISTRONIC PLUS X
Check whether LIM indicator lamp =is off.
If it is off, DISTRONIC PLUS is already selec-
ted.
If it is not ,pres sthe cruise contr ol leverin
the direction of arrow B.
LIM indicator lamp =in the cruise control
lever goe sout. DISTRONIC PLUS is selec-
ted.
Switching on DISTRONIC PLUS ,storing
and maintaining the current speed G
Risk of accident
The vehicle can be braked when DISTRONIC
PLUS is activated. For this reason, deactivate
DISTRONIC PLUS if the vehicle is to be set in
motion by othe rmeans (e.g. in acar wash or
by towing).
You can activate DISTRONIC PLUS in the fol-
lowing circumstances:
R if the engine has been started and you have
been drivin gfor up to two minutes
R if the parkin gbrake is not applied
R if ESP ®
is acti vated
R if the transmission is in position D
R if the bonnet is closed
R if the driver' sdoor is closed and you shift
from Pto Dor your seat belt is fastened
R if the front-passenger door is closed
Activating while driving
When drivin gatspeeds below 30 km/h, you
can only acti vate DISTRONIC PLUS if the vehi-
cle in fron thas been detected and is shown
in the multifunction display. If the vehicle in
front is not shown in the multifunction display
and is no longe rbeing detected, because it
has changed lanes, for example, DISTRONIC
PLU Sisd eactivated and atone sounds. 162
Driving systemsDriving and pa
rking
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Gen
eral information i
When towing atrail er,s et the tyr epres-
sure on th erear axle of the towing vehicle
for am aximum load; se ethe tyr epressure
table in th efuel filler flap.
You will find installatio ndimensions and loads
in the "Technical data” section
(Y page 322).
The maximum permissible trailer drawbar
noseweight on the ball coupling is 75 kg.
However ,the actual noseweight must not
exceed the value given on the trailer tow hitch
and trailer identification plates. The lowest
weight applies.
! Use anoseweight as close as possible to
the maximum permissible noseweight .Do
not use anoseweight of less than 50 kg,
otherwise the trailer ma ycome loose.
Bear in min dthat the payload and the rear
axl eload ar ereduced by the actual nose-
weight.
Please not ethat when towing atrailer, PARK-
TRONIC (Y page 174) and parkin gguidance
(Y page 177 )are onl yavail ablew ith limita-
tions, or not at all.
i The height of the ball coupling changes
with the load of the vehicle. If necessary,
use atrailer wit haheight-adjustable draw-
bar.
Driving tips i
Observ ethe notes on ESP ®
trailer stabi-
lisation (Y page 58).
In Germany, the maximum permissible speed
for vehicle/ trailer combinations depends on
the type of trailer and is either 80 km/ hor
100 km/h. In some countries ,higher maxi-
mum speeds are permissible for vehicle/
trailer combinations. Befor ebeginnin gthe
journey ,check the trailer's documen tsto see
what the maximum permitted speed is.
For certain Mercedes-Benz vehicles, the max-
imum permissible rear axle load is increased
when towing atrailer. Refer to th e"Technical data
"section to fin dout whether this applies
to your vehicle. If you utilise any of the added
maximum rear axle load when towing atrailer,
th ev ehicle/ trailer combination may not
exceed amaximum spee dof100 km/h for
reasons concerning the operating permit.
This als oapplies in countries in which the
permissible maximum speed for vehicle/
trailer combinations is above 10 0km/h.
When towing atrailer, your vehicle's handling
characteristics wil lbedifferent in comparison
to when drivin gwithout atrailer.
Th ev ehicle/ trailer combination:
R is heavier
R is restricted in its acceleration and gradi-
ent-climbin gcapability
R has an increased braking distance
R is affected more by stron gcrosswinds
R demand smore sensitive steering
R consume smore fuel
On long and steep downhil lgradients ,you
must shift to alower gear in good time, or on
vehicles with automatic transmission ,select
the shift range 1,2or 3.
i This also applies if you have activated
cruise control, SPEEDTRONIC or DI S-
TRONIC PLUS.
This will use the brakin geffect of th eengine,
so les sbraking wil lberequired to maintain
the speed. This relieves the load on the brake
system and prevent sthe brakes from over-
heating and wearing too quickly .Ifyou need
additional braking, depress the brake pedal
repeatedly rather than con tinuously.
Driving tips R
Maintain agreater distance from th evehi-
cle in front than when driving without a
trailer.
R Avoid braking abruptly. If possible, brake
gently at first to allow the trailer to run on.
Then increase the braking force rapidly.
R The values given for gradient-climbing
capabilities from astandstill refer to sea 188
Trailer towingDrivin
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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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Tyres
Display messages Possible caus
es/consequences andM Solutions
Tyre pres‐
sure Check
tyres
G
Ris
kofa ccident
The tyr epressure loss warning system ha sdetected asignif-
ican tloss in pressure.
Aw arning ton ealso sounds.
X Stop th evehicle without making any sudde nsteering or
braking mano euvres.P ay attention to the traffic conditions
as you do so.
X Check the tyres and, if necessary ,change the wheel
(Y page 302).
X Chec kthe tyr epressure and ,ifnecessary, correc tthe tyre
pressure.
X Restart the tyr epressure loss warning system when th etyre
pressure is correct (Y page 301).Check
tyr
epres‐
sures then
restart
Run Flat
Indicator Ad
isplay message for the tyre pressure loss warnin gsystem
was shown.
X Set the cor recttyrep ressur eina ll four tyres.
X Restart th etyrep ressur eloss war ningsystem
(Y page 301). Ru
nF lat
Indicator inopera‐
tive Th
et yrep ressur eloss war ningsystem is faulty.
X Visit aq ualified specialist workshop. Vehicle
Display messages Possible causes/consequences and
M Solutions
To st
art
engine, shift to
either P
or N Yo
uh avea ttempted to startthe engin ewitht he transmiss ion
in position Ror D.
X Shift th etransmission to position Por N. P Select
Park (P) You have switched off the engine with the Star
t/Stop button
and opened the driver's door.
You wante dtolock the vehicle.
Aw arning ton ealso sounds.
X Shift th etransmissio ntoposition P. 230
Display messagesOn-boar
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Problem Possible causes/consequences and
M Solutions
äå!
The yellow ESP
®
and
ESP ®
OFF warning
lamps and the yellow
AB Sw arning lamp are
lit while the engine is
running. G
Risk of accident
ABS and ESP ®
are faulty. Other systems, e.g. BAS ,BAS PLUS,
PRE-SAFE ®
,P RE-SAFE ®
Brake, the HOL Dfunction ,hill start assist,
th ea daptive brak elights and ESP ®
trailer stabilisation ,are also
not availabl edue to amalfunction.
The brake system continues to function normally, but without the
functions listed above. The wheels coul dtherefore lock if you
brake hard, for example.
ATTENTION ASSIST is deactivated.
X Observ ethe additional display messages in the multifunction
display.
X Drive on carefully.
X Visit aquali fieds pecialist workshop. ä
The yellow ESP
®
warn-
ing lamp flashes while
the vehicle is in motion. G
Risk of accident
ESP ®
or tra ction contro lhas intervened because ther eisarisk of
skidding or at least one wheel has started to spin.
Cruise control or DISTRONIC PLU Sisd eactivated.
X Only depress the accelerator pedal as far as necessar ywhen
pulling away.
X Release the accelerator pedal while the vehicle is in motion.
X Adap tyour drivin gstyle to suit the road and weather conditions.
X Do not deactivate ESP ®
.
Exceptions: (Y page 57). 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
stabilis ethe vehicle if it starts to skid or if awheel starts to spin.
X Reactivate ESP ®
.
Exceptions: (Y page 57).
X Adap tyour drivin gstyle to suit the road and weather conditio ns.
If ESP ®
cannot be activated:
X Have ESP ®
checked at aqualified specialist workshop. Warnin
gand indicator lam psin th einstru ment cluster
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