2010 MERCEDES-BENZ E-CLASS CABRIOLET radiator

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
141Driving and parking
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Displa
ymessages Possible causes/consequences and
M Solutions
PR
E-SAFE Function
currently
limited
See Own‐
er'
sM an‐
ual G
Risk of accident
PRE-SAFE ®
Brake is tempora rily inoperative if:
R theD ISTRONIC PLUScove rint he ra diatorgrille is di rty.
R the sensor sint he bumpers are dirty.
R itsf unction is impaire ddue to heav yrain or snow.
R ther adar sensor system is temporarily inoperative ,e.g. due
to electromagnetic radiation emitted by nearby TV or radio
stations or other sources of electromagnetic radiation.
R the system is outside the operating tempe rature range.
R the on-board voltage is insufficient.
R E63A MG: you deactivat eESP®
.
PRE- SAFE ®
Brake is operational again and the displa ymes-
sage disappear swhen:
R the dir t(e.g. slush) drops away while the vehicle is in
motion.
R the system detects that the sensor sare full yavailable
again.
R thes ystem is within the operatin gtemperatur erange.
R E63A MG: you reactivate ESP ®
.
If the displa ymessage continues to be displayed:
X Clean the DI STRONIC PLUS cover in the radiator grille
(Y page 267).
X Clean the bumpers (Y page 267).
X Restart the engine.
X Wait until the batter yissufficiently charged. PRE-SA
FE Functions
limited
See Own‐
er's Man‐
ual
G
Ris
kofa ccident
PRE-SAFE ®
Brak eisfaulty. BA SPLUS or th edistance warning
signal may also have failed.
X Visit aqualified specialist workshop. A Malfunc‐
tion Con‐
sult work‐
shop
G
Risk of injury
Cabriolet: the roll bars are faulty.
X Visit aqualified specialist worksho pimmed iately. 212
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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
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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Problem Possible causes/consequences and
M Solutions
8
The yellow reserve fuel
warnin
glamp lights up
while the engine is run-
ning. The fuel 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. ?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gauge is at the
start of the scale.
The temperature senso
rfor the coolant temperatur egauge 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 Engage the parking brake.
X Consult aqualified specialist workshop. ?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
The coolant level is too low.
If the coolant level is correct, the airflow to the radiator may be
blocked or the electric radiator fan may be malfunctioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
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 Check the coolant level and top up the coolant (Y page 261).
Observe the warning notes.
X If the coolant needs topping up more often than usual, have the
engine coolant system checked.
X Make sure that the air suppl ytot he radiator is not blocked, e.g.
by snow, slush or ice.
X If the coolant temperature is less than 12 0†,you can con tinue
driving to the neares tqualified specialist workshop.
X Avoid subjecting the engine to heavy loads ,e.g. driving in moun-
tainous terrain, and stop-s tart driving. ?
Th
er ed coolan twarn-
ing lamp comes on
while the engine is run-
ning. Awarning tone
also sounds. The coolant temperature has exceeded 120 †. 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. Warnin
gand indicator lam psin th einstru ment cluster
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X
The lids of bonnet lifter ; are resting
on the hous ings:close bon-
net :(Ypage 260).
or
X The lids of bonnet lifter ; are no
trest-
in gont he housings: first lift up bon-
net :on left-h and?and then on right-
hand side B.Lift up bonnet :until the lid
of bonnet lifter ;no longe rmoves.
The lids of bonnet lifter ;must rest on
housings =(arrow).
X Close bonnet :(Ypage 260).
If you can notc lose bonnet :or the L
symbol appears in the multi-function display,
repeat the steps. G
Risk of accident
If the bonnet can still not be engaged properly
or the Lsymbol appears in the multifunc-
tion display, do not continue driving. The bon-
net can then open when the vehicle is in
motion and obscure your field of vision. Con-
sult aqualified specialist workshop .Other-
wise ,you may cause an accident and injure
yourself and others.
Opening th ebonnet G
Risk of accident
Do not pull the release lever while the vehicle
is in motion .Ifyou do so, the bonne tmay open
up and block your view. G
Risk of injury
There is arisk of injur yifthe bonnet is open,
even if the engin eisnot running.
Som eengine compone ntsc an become very
hot.
To avoid the risk of burns, only touch those
components described in the Owner's Manual
and observe the relevant safety notes. G
Risk of injury
The radiator fan between the radiator and the
engine can start automatically, even if the key has been removed from the ignition lock. For
this reason, you must not reach into the fan
rotation area. You could otherwise be injured.
Vehicles with
apetrol engine: The elec-
tronic ignition system uses high voltage. For
this reason ,you must never touc hignition
system component s(ignition coil, ignition
cables, spark plug connectors or test socket)
while:
R the engine is running
R the engine is being started
R the ignition is switched on and the engine
is being cranked by hand
You could otherwise suffer an electric shock
and be seriously or even fatally injured.
Vehicles with adiesel engine: The elec-
tronic injection control uses high voltage. For
this reason ,you must never touc hinjection
system components while:
R the engi neis running
R the engin eisbeing started
R the ignition is switched on
You could otherwise suffer an electric shock
and be seriously or even fatally injured.
X Make sure that the windscreen wipers are
switched off. G
Risk of injury
The windscreen wipers and wiper linkage
could be set in motion.
When the bonnet is open, you or others could
be injured by the wiper linkage.
Make sure that the windscreen wipers are
switched off .Remov ethe key or make sure
that no ignition position has been selected
with KEYLESS-GO. All indi cator lamps must be
off in the instrumen tpanel. Engine compartment
259Maintenance and care
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