radiator MERCEDES-BENZ E-CLASS COUPE 2009 Owners Manual

G
Risk of injury
The radiator fan between the radiator and the
engine can star tautomatically, eve nifthe key
ha sb eenr emoved from the ignition lock. For
this reason, yo umustn ot reach into the fan
rotation area. Otherwise, yo ucould be
injured.
Vehicles with apetro lengine:
The electroni cignition system uses hig hvolt-
age. For this reason, yo umustn ever touch
ignition system components (ignition coil,
ignition cable ,spark plug connector 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 cranke dbyhand.
You could otherwise suffer an electri cshock
and be seriously or eve nfatall yinjured.
Vehicles with adiese lengine:
The electroni cinjection control uses hig hvolt-
age. For this reason, yo umustn ever touch
injection system components while:
R the engine is running.
R the engine is being started.
R the ignition is switched on.
You could otherwise suffer an electri cshock
and be seriously or eve nfatall yinjured.
X Make sure that the windscreen wiper sare
switched off. G
Risk of injury
The windscreen wiper sand wiper linkage
could be set in motion.
Whe nthe bonne tiso pen, yo uorothers could
be injured by the wiper linkage.
Make sure that the windscreen wiper is
switched off. Remove the key or make sure
that no ignition level ha sbeens elected on
KEYLESS-GO* .Inthe instrument cluster, all
of the indicator lamps mus tbeo ut. The bonne
trelease lever is located in the
driver' sfootwell. X
Pull bonne trelease lever 0046.
The bonne tisr eleased.
! Make sure that the windscreen wipers
are not folded away from the windscreen.
Otherwise, yo ucould damag ethe wind-
scree nwiper sort he bonnet.
The handle for opening the bonne tisl ocated
above the radiator grill eonthe right-hand
sid eoft he vehicle whe nviewe dint he direc-
tion of travel. X
Reach into the gap, pull bonne tcatch han-
dle 0047up and lift the bonnet.
Closing G
Risk of injury
Make sure that nobody can become trapped
as yo uclosethe bonnet. Engine compartment
181Operation
*optional
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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
235Practical advice
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Problem Possible causes/consequences and
0050
0050Solutions Vehicles with
apetrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is
amalfunction in the engine electronics or amechanical
componentoft he engine control unit.
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 gauge shows a
value above 120 †.
The coolant warning
lamp may also light up
and awarning tone may
sound (Y page 107). The coolant level is too low. The coolant is too hot and the engine
is no longer being cooled sufficiently.
X
Stop as soon as possible and allow the engine and the coolant
to cool down.
X Check the coolant level (Y page 183). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct,t
he radiator fan may be faulty. The
coolant is too hot and the engine is no longer being cooled suffi-
ciently.
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. 242
TroubleshootingPractical advice
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