2011 MERCEDES-BENZ E-CLASS COUPE coolant

Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviation sare possible. Please
not ethat your vehicle may not be equipped
with all feature sdescribed. This also
applies to safety-relevan tsystems and
functions.
i Pleas ereadt he information on qualified
specialist workshop s(Ypage 22). Important safet
ynotes
You will fin danillustration of th einstrument
cluster in th e"At ag lance "section
(Y page 28). G
WARNING
Only use th eon-bo ardc om puter when road
and traffic condition spermit .You would oth-
erwise be distracted and unable to concen-
trate properly on driving, and could cause an
accident. G
WARNING
If the instrument cluster or multifunction dis-
play fails, no messages can be displayed.
This means that you will not see information
about the driving situation, such as the speed,
outside temperature, warning/indicator
lamps, display messages or system failures.
Handling characteristics may be affected.
Adapt your driving style and speed accord-
ingly.
Immediately consult aqualified specialist
workshop which has the necessary specialist
knowledge and tools to carry out the work
required. Mercedes-Benz recommends that
you use aMercedes-Benz Service Centre for
this purpose. In particular, work relevant to
safety or on safety-related systems must be
carried out at aqualified specialist workshop. G
WARNING
The on-board computer only records and dis-
plays malfunctions and warnings from certain
systems. For this reason, you should always
make sure that your vehicle is safe to use. You
could otherwise cause an accident by driving
an unsafe vehicle. G
WARNING
The operating safety of your vehicle could be
jeopardised if maintenance work is carried
out incorrectly. As aresult, you could lose
control of the vehicle and cause an accident.
In addition, the safety systems may no longer
be able to protec tyou or others as they are
designed to do.
Always have maintenance work carried out at
aq ualified specialist workshop. The qualified
specialist workshop must have the necessary
specialist knowledge and tools to carry out
the work required. Mercedes-Benz recom-
mends that you use aMercedes-Benz Service
Centre for this purpose. In particular, work
relevant to safety or on safety-related sys-
tems must be carried out at aqualified spe-
cialist workshop. Displays and operation
Coolant temperature gauge
The coolant temperature gauge is in the
instrument cluster on the right-hand side.
Under normal operating conditions and with
the specified coolant level, the coolant tem-
perature may rise to 120 †.
At high outside temperatures and when driv-
ing uphill, the coolant temperature may rise
to the end of the scale. Rev counter
The red band in the rev counter indicates the
engine's overrevving range. 212
Displays and operationOn-board computer and displays

Engine
Display messages Possible causes/consequences and
M Solutions
+
Top
up coolant See
Owner'
sManual The coolant leve
listoolow.
X Top up th ecoolant ,observing th ewarning note sbefore doing
so (Y page 283).
X If th ecoolant needs toppin gupmoreo ften than usual, have the
engin ecoolant system checked at aqualifie dspecialist work-
shop. ?
Coolan
tStopv ehi‐ cle Switch engine
off The coolant is to
ohot.
Aw arning tone also sounds.
X Stop th evehicle immediately, payin gattentio ntoroad and traf-
fic conditions, and switch off the engine.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
X Wait until the display message disappears before restarting the
engine. Otherwise, there is arisk of engine damage.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit aqualified specialist
workshop immediately. The poly-V-belt may have torn.
X
Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Open the bonnet.
X Check whether the poly-V-belt is torn.
If the poly-V-belt is torn:
! Do not continue driving. The engine could otherwise overheat.
X Consult aqualified specialist workshop.
If the poly-V-belt is OK:
X Wait until the display message disappears before restarting the
engine. Otherwise, there is arisk of engine damage.
X Pay attention to the coolant temperature display.
X Visit aqualified specialist workshop. ? The fan motor is faulty.
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
Display messagesOn-board computer and displays

Engine
Problem Possible causes/consequences and
M Solutions
;
The yellow engin
ediag-
nostics warning lamp
light supw hile the
engin eisrunning. Ther
emay be afault ,for example:
R in th eenginem anagement
R in th efuel injection system
R in th eexhaust system
R in th eignition system (for vehicle swith petrol engines)
R in th efuel system
The emission limit values may be exceeded and th eenginem ay
be runnin ginemergenc ymode.
X Hav ethe vehicle checked as soon as possible at aqualified
specialist workshop. Vehicle
swithad ieseleng ine: th efuel tan khas been run dry
(Y page 164).
X Start th eenginet hree to four times after refuelling.
If th eyellow engin ediagnostics warning lamp goes out ,emer-
gency runnin gmodeisc ancelled. The vehicle need no tbe
checked. 8
The yellow reserve fuel
warning lamp lights up
whil
ethe engine is run-
ning. The fue
llev el ha sdroppe dinto the reserve range.
Operation of the auxiliary heating is deactivated when the fue llev el
drops into the reserve range.
X Refue latthe nearest filling station. ?
The red coolant warn-
ing lamp lights up while
the engine is running
and the coolant tem-
perature gaug
eisatthe
star toft he scale. The temperature sensor for the coolant temperature gauge 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
Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine. Do not continue driving
under any circumstances.
X Apply the parking brake.
X Consult aqualified specialist workshop. 260
Warning and indicator lampsint
he instrument clusterOn-board computer and displays

Problem Possible causes/consequences and
M Solutions
?
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 engine radiator
may be blocked or the electric engine radiator fan may be mal-
functioning.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X
Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Let the engine and coolant cool down.
X Check the coolant level and top up the coolant (Y page 283).
Observe the warning notes as you do so.
X If you have to top up the coolant frequently, have the engine
cooling system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
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 traffic. ?
The red coolant warn-
ing lamp comes on
while the engine is run-
ning.
Awarning tone
also sounds. The coolant temperature has exceeded 120 †. The airflow to the
engine radiator may be blocked or the coolant level may be too
low.
The engine is not being cooled sufficiently and may be damaged.
X
Observe the additional display messages in the multifunction
display.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Let the engine and coolant cool down.
X Check the coolant level and top up the coolant (Y page 283).
Observe the warning notes as you do so.
X If you have to top up the coolant frequently, have the engine
cooling system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by frozen slush.
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 traffic. Warning and indicator lampsint
he instrument cluster
261On-board computer and displays Z

X
Slowl yslide oi ldipstick :into the guide
tub etot he stop ,and take it ou tagain.
The oil level is correc tifthe level is between
MIN mark =and MAX mark ;.
X Top up the oil if necessary.
Adding engine oil H
Environmental note
When topping up the oil, take care not to spill
any. If oil enters the soil or waterways, it is
harmful to the environment. G
WARNING
If engine oil comes into contact with hot
engine parts, it may ignite and you could burn
yourself. Do not spill any engine oil on hot
engine parts. Example: engine oil cap
X
Turn cap :anti-clockwise and remove it.
X Top up with the amount of oil required.
Fill carefully to the maximum mark on the oil
dipstick.
i Depending on the engine, the difference
between the minimum mark and the maxi-
mum mark is approximately 1.5 –2litres.
! Do not add too much oil. If the oil level is
above the "max" mark on the dipstick, too
much oil has been added. This can lead to
damage to the engine or the catalytic con-
verter. Have excess oil siphoned off.
For further information on engine oil, see
(Y page 335). X
Replace cap :on the filler neck and
tighten clockwise.
Ensure that the cap locks into place
securely. Checking and adding other service
products
Checking the coolant level Only check the coolant level when the vehicle
is on alevel surface and the engine has cooled
down.
X Turn the key to position 2(Y page 147) in
the ignition lock.
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 147).
X Check the coolant temperature displayin
the instrumentc luster. G
WARNING
The cooling system is pressurised. Therefore,
only unscrew the cap once the engine has
cooled down. The coolant temperature gauge
must display less than 70 †.Otherwise, you
could be scalded if hot coolant escapes. X
Slowl yturnc ap : half aturna nti-clock-
wise and allow exces spressure to escape.
X Turn cap :further anti-clockwis eand
remove it.
If th ecoolan tisatt heleve lofm arkerbar
= in th efille rneck when cold, there is
enough coolant in coolant expansion
tank ;. Engine compartment
283Maintenance and care Z

If the coolant level is approximately 1.5 cm
above marker bar =in the filler neck when
warm, there is enough coolant in coolant
expansio ntank ;.
X If necessary, to pupwithc oolan tthat has
been tested and approved by Mercedes-
Benz.
X Replace cap :and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 337).
Windscreen washer system and head-
lamp cleanings ystemThe washer fluid reservoir is used for both the
windscreen washer system and the headlamp
cleaning system.
i
Components and service products must
be matched. Mercedes-Ben zrecommends
that you use products tested and approved
by Mercedes-Benz. They are listed in this
Mercedes-Ben zOwner's Manual in the
appropriat esection.
You can identif yservice product sapproved
by Mercedes-Ben zbythe followin ginscrip-
tions on the container:
R MB-Freigabe (e.g. MB-Freigabe 371.0)
R MB-Approval (e.g. MB-Approval 371.0)
Other labels and recommendations that
make reference to quality level or aspeci-
fication according to an MB Sheet no. (e.g.
MB 371.0) are not necessarily approved by
Mercedes-Benz.
You can obtain further information from
any Mercedes-Benz Servic eCentre. G
WARNING
Windscreen washer fluid is highly flammable.
Fire, naked flames and smokin gare prohibi-
ted when handling washer fluid concentrate.
! Only use washer fluid concentrate which
is suitable for plastic lamp lenses. Unsuit-
able washer fluid concentrate could dam- age the plastic lamp lenses of the head-
lamps.
! Do not use distilled or de-ionised water in
the washer fluid reservoir. Otherwise, the
level sensor may be damaged.
i Add windscreen washer concentrate, e.g.
MB SummerFit, to the washer fluid all year
round. Example: washer fluid reservoir
X
Mix the windscreen washer fluid in acon-
tainer beforehand.
X At temperatures above freezing: fill the
washer fluid reservoir with amix of water
and windscreen washer concentrate (e.g.
MB SummerFit).
X At temperatures below freezing: fill the
washer fluid reservoir with amix of water
and windscreen washer concentrate (e.g.
MB WinterFit). Adapt the mixing ratio to the
outside temperatures.
X To open: pull cap:upwards by the tab.
X Top up with the premixed washer fluid.
X To close: press cap :ontothe filler neck
until it engages. Maintenance
ASSYST PLUS service interval display
Service messages Information on the type of service and service
intervals (see separat
eServic eBooklet). 284
MaintenanceMaintenance and care

High-pressure cleaning equipment
G
WARNING
Do not use high-pressure cleaners with circu-
lar-jet nozzles (dirt grinders) to clea nyour
vehicle, in particular the tyres. You could oth-
erwise damage the tyres and cause an acci-
dent.
! Always maintain adistance of at least
30 cm between the vehicle and the high-
pressure cleaner nozzle. Information about
the correc tdistanc eisavailable fro mthe
equipment manufacturer.
Move the high-pressure cleaner nozzle
around when cleaning your vehicle.
Do not aim directly at any of the following:
R tyres
R door gaps, jointse tc.
R soft top (Cabriolet)
R wind deflector net (Cabriolet)
R electrical components
R battery
R connectors
R lights
R seals
R trim elements
R ventilation slots
Damaged seals or electrical components
can lead to leaks or failures.
Cleaningt he wheels !
Do not use acidic wheel cleaning products
to remove brake dust. This could damage
wheel bolts and brake components.
! Do not park up the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for afew minutes after clean-
ing. Braking heats the brake discs and the brake pads/linings, thus drying them. The
vehicle can then be parked up.
Cleaningt he paintwork Scratches, corrosive deposits, areas affected
by corrosion and damage caused by inade-
quate care cannot always be completely
repaired. In such cases, visit aqualified spe-
cialist workshop, e.g. aMercedes-Benz
Service Centre.
X Remove impurities immediately, where
possible, whilst avoiding rubbing too hard.
X Soak insect remains with insect remover
and rinse off the treated areas afterwards.
X Soak bird droppings with water and rinse
off the treated areas afterwards.
X Remove coolant, brake fluid, tree resin,
oils, fuels and greases by rubbing gently
with acloth soaked in petroleum ether or
lighter fluid.
X Use tar remover to remove tar stains.
X Use silicone remover to remove wax.
! Do not affix:
R stickers
R films
R magnetic plates or similar items
to painted surfaces. You could otherwise
damage the paintwork.
Care and treatment of mattp aintwork If your vehicle has
aclear matt finish, observe
the following instructions in order to avoid
damage to the paintwork due to incorrect
care.
These notes also apply to light alloy wheels
with aclear matt finish.
! Never polish the vehicle or the light alloy
wheels. Polishing makes the paintwork
shiny. Care
287Maintenance and care Z

Vehicl
eidentificatio nplates Vehicl
eidentificatio nplate with vehi-
cl ei dentificatio nnumber (VIN) and
pain tcode number X
Open th eright-han ddoor.
You will see vehicle identification plate :.Vehicle identification plat
e(example)
: Vehicle identification plate
; Vehicle manufacturer
= EU type approval number
? Vehicle identification number (VIN)
A Maximum permissible gross vehicle
weight
B Gros scombinatio nmass
C Maximum permissible fron taxle load
D Maximu mpermissible rear axle load
E Paint code Vehicle identification number (VIN)
In addition to being stamped on the vehicle
identification plate, the vehicle identification number (VIN) is also stamped ontot
he vehicle
body.
It is located on the floor in fron tofthe right-
hand fron tseat. X
Slide the right-hand fron tseat to its rear-
most position.
X Slightly raise fron tfloor covering =and
fold floor coverin gflap :upwards.
You will see vehicle identification number
(VIN) ;. Engine number
The engine number is stamped int othe crank-
case. More information can be obtained from
any Mercedes-Ben zServic eCentre. Service products and capacities
Important safety notes
Servic eproducts include the following:
R fuels (e.g .petrol, diesel)
R lubricant s(e.g. engin eoil, transmission oil)
R coolant
R brake fluid
R windscreen washer fluid
Vehicle componentsa nd their respective
lubricant smust match. Mercedes-Benzr ec-
ommends that you use product sthat have
been tested and specially approved by
Mercedes-Benz.T hese productsare listed in
this Mercedes-BenzO wner's Manual in the
relevant section. Service products and capacities
333Technical data Z