coolant level MERCEDES-BENZ E-CLASS SALOON 2015 Owners Manual

Problem
Possible causes/consequences and
M
MSolutions Vehicles with
apetrol
engine:
The engine is not run-
ning smoothly and is
misfiring. There is
amalfunction in the engine electronics or in amechanical
componentoft he engine management system.
X Only depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic con-
verter and damage it.
X Have the cause rectified immediately at aqualified specialist
workshop. The coolant tempera-
ture display is showing
more than 120 †. The
coolant warning lamp
may also be on and a
warning tone may
sound. 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 382). Observe the warning
notes as you do so and top up the coolant if necessary. If the coolant level is correct,t
he engine radiator fan may be faulty.
The coolant is too hot and the engine is no longer being cooled
sufficiently.
X If the coolant temperature is below 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 in
mountainous terrain and stop-start traffic. Manual transmission
Gear lever
! Only engage gear when the clutch pedal is
depressed.
! When shifting between
5thand 6thgear,
you should always push the gear lever all
the way to the right. Otherwise, you could
shift unintentionally into 3rdor4th gear
and damage the transmission.
If you shift down at too high aspeed (trans-
mission braking), this can cause the engine to overrev, leading to engine damage.
Do not use the clutch bite point to keep the
vehicle stationary on uphill gradients.
There is otherwise arisk of damaging the
clutch.
! On long and steep downhill gradients,
especially if the vehicle is laden or towing a trailer, you must shift into gear
1, 2or3in
good time. This uses the engine's braking
effect.T his relieves the load on the brake
system and preventst he brakes from over-
heating and wearing too quickly. k
Reverse gear
1 -6
Forward gears 188
Manual transmissionDriving and parking

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variation sare pos-
sible. Not ethat your vehicle may not be
equipped with all of the function sdescri-
bed. This is also the case for system sand
function srelevan ttosafety.
i Read the information on qualified special-
ist workshops: (Y page 27). Important safet
ynotes G
WARNING
Operating the integrated information systems and communications equipment in the vehicle
while drivin gwill distract you from traffic con-
ditions. You could then lose contro lofthe
vehicle. There is arisk of an accident.
Only operate thes edevices if road traffic con-
dition spermit .Ifyou are unsure about the
surrounding conditions, pull over to asafe
locatio nand make entries only while the vehi-
cle is stationary.
You must observ ethe legal requirements for
the country in which you are currently driving when operatin gthe on-board computer. G
WARNING
If the instrumen tcluster has failed or mal-
functioned, you may not recognise function
restrictions relevan ttosafety. The operating
safet yofy our vehicle may be impaired. There
is ar isk of an accident.
Driv eonc arefully. Have the vehicle checked
at aq ualified specialist workshop immedi-
ately.
The on-board computer only shows messages
or warnings from certain system sinthe mul-
tifunction display. You should therefore make
sure your vehicle is operatin gsafely at all
times. If the operatin
gsafet yofy our vehicle is
impaired, park the vehicle safely as soon as
possible. Contact aqualified specialist work-
shop.
HYBRID vehicles :make sure that you read the
"HYBRID "Supplement. You could otherwise
fail to recognise dangers ,e.g. due to high
voltage.
For an overview; see the instrumen tcluster
illustration (Y page 34). Displays and operation
Coolant temperatureg
auge G
WARNING
If you open the bonnet while the engin eis
overheating or while ther eisafire in the
engin ecompartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is adanger of injury.
Allow an overheating engin etocool down
before openin gthe bonnet. If ther eisafire in
the engin ecompartment, leave the bonnet
closed and notify the fire brigade.
The coolan ttemperature gauge is in the
instrumen tcluster on the left-hand side
(Y page 34).
Under normal operatin gcondition sand with
the specified coolan tlevel, the coolan ttem-
perature may rise to 120 †.
At high outside temperature sand when driv-
ing uphill, the coolan ttemperature may rise
to the end of the scale. Rev counter
! Do not drive in the overrevvin
grange.
Doin gsow ill damage the engine.
The red band in the rev counter indicates the
engine's overrevvin grange.
The fuel supply is interrupted to protect the
engin ewhen the red band is reached. 276
Displays and operationOn-boar
dcomputer and displays

Engine
Display messages
Possible causes/consequences and
M
MSolutions +
Top Top
up
upcoolant
coolant See
See
Owner' sManual
Owner' sManual The coolant leve
listoolow.
! Avoid making lon
gjou rneys with to olittle coolant in th eengine
cooling system. The engin ewill otherwise be damaged.
X Top up th ecoolant ,observing th ewarning note sbefore doin gso
( Y page 382).
X If th ecoolant needs toppin gupmoreo ften than usual, have the
engin ecoolant system checked at aqualifie dspecialist work-
shop. ? The fan motor is faulty.
X If th ecoolant temperatur eisbelow 12 0†,you can continue
driving to th eneares tqualifie dspecialist workshop.
X Avoid putting th eengineu nde rheav yload as you do so, e.g.
driving in mountainous terrain and stop-start traffic. ?
Coolan
tStopv ehi‐
Coolan tStopv ehi‐
cle Switch engine cle Switch engine
off off The coolant is to
ohot.
Aw arning tone also sounds.
G WARNING
Never driv ewith an overheate dengine. Drivin gwhen your engine
is overheate dcan caus esom efluids whic hmay have leaked into
th ee nginec ompartmen ttocatch fire.
In addition ,steam from an overheate denginec an caus eserious
burns, whic hcan occur jus tbyopening th ebonnet.
Ther eisar isk of injury.
X Stop th evehicle immediately, paying attentio ntoroad and traf-
fic conditions, and switch off th eengine.
X Safeguard th evehicle against rolling away (Y page 205).
X Wait until th eengineh as cooled down.
X Mak esure that th eair supply to th eenginer adiator is not
blocked, e.g .byfrozenslush.
X Do no tstart th eenginea gain until th edisplay message goes out
and th ecoolant temperatur eisbelow 12 0†.The engin emay
otherwise be damaged.
X Pay attentio ntothecoolant temperatur edisplay.
X If th etem peratur eincreases again ,consult aqualifie dspecialist
workshop immediately.
Under normal operatin gcondition sand with th especified coolant
level, th ecoolant temperatur emay rise to 12 0†. Displa
ymessages
311On-boardcomputer and displays Z

Display messages
Possible causes/consequences and
M
MSolutions 4
Check eng
.oil
Check eng .oil
lev .w henn ext
lev .w henn ext
refuelling refuelling The engin
eoil level has dropped to th eminimum level.
Aw arnin gtonea lso sounds.
! Avoid lon
gjou rneys when there is to olittl ec oolan tint hecool-
in gs ystem. Otherwise th eenginew ill be damaged.
X Chec kthe oil level when next refuelling, at th elatest
(Y page 381).
X If necessary, to puptheengin eoil (Y page 381).
X Hav ethe engin echecked ataq ualified specialist workshop if the
engin eoil needs toppin gupmoreo ften than usual.
Information on approve dengineo ils can be obtained from any
qualified specialist workshop or on th eInterne tathttp://
bevo.mercedes-benz.co m.4
Add 1 Add 1
litre
litre engine
engine
oil
oil when
when next
next refu‐
refu‐
elling
elling AMG vehicles: the engine oil level is too low.
!
Avoid long journeys when there is too little coolant in the cool-
ing system. Otherwise the engine will be damaged.
X Check the oil level when next refuelling, at the latest
(Y page 381).
X If necessary, top up the engine oil (Y page 381).
X Have the engine checked at aqualified specialist workshop if the
engine oil needs topping up more often than usual.
Information on approved engine oils can be obtained from any
qualified specialist workshop or on the Internet at http://
bevo.mercedes-benz.com. 4
Engine oil level Engine oil level
Stop vehicle Stop vehicle
Switch engine off Switch engine off The engine oil level is too low. There is
arisk of engine damage.
X Stop the vehicle immediately, paying attention to road and traf-
fic conditions, and switch off the engine.
X Safeguard the vehicle against rolling away( Ypage 205).
X Check the engine oil level (Y page 381).
X If necessary, top up the engine oil (Y page 381).8
Reserve fuel level Reserve fuel level The fuel level has dropped into the reserve range.
Operation of the auxiliary heating is deactivated if the fuel level
drops into the reserve range.
X Refuelatt he nearest filling station. C There is very little fuel in the fuel tank.
The auxiliary heating cannot be operated.
X Refuelatt he nearest filling station without fail. Display messages
313On-board computer and displays Z

Engine
Problem
Possible causes/consequences and
M
MSolutions ;
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 ginemergency mode.
X Hav ethe vehicle checked as soon as possible at aqualified
specialist workshop. Vehicle
swithadiese leng ine: th efuel tan khas been run dry
(Y page 204).
X Afte rrefuellin gstart th eenginet hree to four times.
If th eyellow engin ediagnostics warning lamp goes out ,emer-
gency runnin gmode is cancelled. The vehicle need no tbe
checked. 8
The yellow reserv
efuel
warning lamp is on
while th eengineisr un-
ning. The fuel leve
lhas dropped int othe reserv erange.
Operatio noftheauxiliar yheating is deactivate difthefuel level
drops int othe reserv erange.
X Refuel at th eneares tfillin gstation. ?
The red coolant warn-
ing lamp light
supwhile
th ee ngineisr unning
and th ecoolant tem-
perature gauge is at the start of th escale. The temperatur
esensor for th ecoolant temperatur egauge is
faulty.
The coolant temperatur eisnolonger bein gmonitored. Ther eisa
risk of engin edamage if th ecoolant temperatur eistoohigh.
X Stop th evehicle immediately, paying attentio ntoroad and traf-
fic conditions, and switch off th eengine. Do no tcontinue driving
unde rany circumstances.
X Safeguard th evehicle against rolling away (Y page 205).
X Consult aqualifie dspecialist workshop. 336
Warning and indicator lamps in th
einstrumen tclusterOn-boar dcomputer and displays

Problem
Possible causes/consequences and
M
MSolutions ?
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,t
he airflow to the engine radiator may
be blocked or the electric engine radiator fan may be malfunc-
tioning.
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 Safeguard the vehicle against rolling away (Y page 205).
X Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and top up the coolant, observing the
warning notes (Y page 382).
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 Do not start the engine again until the coolant temperature is
below 120 †. The engine may otherwise be damaged.
X Drive to the nearest qualified specialist workshop.
X Avoid putting the engine under heavy load as you do so, e.g.
driving in mountainous terrain 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.
G WARNING
The engine is not being cooled sufficiently and may be damaged.
Never drive with an overheated engine. Driving when your engine is overheated can cause some fluids which may have leaked into
the engine compartmen ttocatch fire.
In addition, steam from an overheated engine can cause serious
burns, which can occur just by opening the bonnet.
There is arisk of injury.
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 Safeguard the vehicle against rolling away (Y page 205).Warning and indicator lampsint
he instrument cluster
337On-board computer and displays Z

Problem
Possible causes/consequences and
M
MSolutions X
Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and top up the coolant, observing the
warning notes (Y page 382).
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 below 120 †, you can continue
driving to the nearest qualified specialist workshop.
X Avoid putting the engine under heavy load as you do so, e.g.
driving in mountainous terrain and stop-start traffic. Driving systems
Problem
Possible causes/consequences and
M MSolutions ·
The red distance warn-
ing lamp lights up while
the vehicle is in motion. The distance to the vehicle in front is too small for the speed
selected.
X Increase the distance. ·
The red distance warn-
ing lamp lights up while
the vehicle is in motion. Aw arning tone also
sounds. You are approaching
avehicle, apedestrian or astationary obsta-
cle in your line of travel at too high aspeed.
X Be prepared to brake immediately.
X Pay careful attention to the traffic situation. You may have to
brake or take evasive action.
Observe the additional information on PRE‑ SAFE®
Brake
(Y page 87).
Observe the additional information on the distance warning func-
tion of COLLISION PREVENTION ASSIST PLUS (Y page 80).338
Warning and indicator lampsint
he instrument clusterOn-board computer and displays

G
WARNING
If engine oil comes into contact with hot com- ponents in the engine compartment, it may
ignite. There is arisk of fire and injury.
Make sure that engine oil does not spil lout
over the filler neck. Allow the engine to cool
downa nd thoroughly clea nthe components
that have come into contact with engine oil
before you start the engine. H
Environmental note
When topping up the oil,t ake care not to spill
any. If oil enters the soil or waterways, it is
harmfu ltothe environment.
! Only use engine oilsa
nd oil filters that
have been approved for vehicles with aser-
vice system. You can obtai nalistoft he
engine oilsa nd oil filters tested and
approved in accordance with the
Mercedes-Benz Specifications for Service
Products at any Mercedes-Benz Service
Centre.
Damag etothe engine or exhaust system is
caused by the following:
R using engine oilsa nd oil filters that have
not been specifically approved for the
service system
R changing the engine oil and oil filter after
missing the change interval required by
the service system
R using engine oil additives
! Do not add too much oil.T
opping up with
too much engine oil can result in damage to
the engine or to the catalytic converter.
Have excess engine oil siphoned off. Example
X Turn cap :anti-clockwise and remove it.
X Top up the engine oil.
If the oil leve lisatorbelow the MIN mark on
the oil dipstick, top up with 1.0 lofe ngine
oil.
X Replace cap :on the filler neck and turn
clockwise.
Make sure that the cap locks securely into place.
X Check the oil level again with the oil dip-
stick (Y page 381).
For further information on engine oil, see
(Y page 478). Other service products
Checking the coolant level G
WARNING
Certain components in the engine compart-
ment could be very hot, e.g. the engine, the
radiator and parts of the exhaust system.
There is arisk of injury when accessing the
engine compartment.
As far as possible, allow the engine to cool
down and only touch the components descri- bed in the following. G
WARNING
The engine cooling system is under pressure, particularly if the engine is warm. You could
be scalded by hot coolant spraying out when
opening the cap. There is adanger of injury. 382
Engine compartmentMaintenance and care

Allow the engine to coo
lbefore opening the
cap .Wearg love sa nd protective eyewear
when opening. Slowl yturn the cap half aturn
to allo wpressure to escape. X
Park the vehicl eonalevel surface.
Onl ycheck the coolant level if the vehicl eis
on alevel surface and the engine has
coole ddown.
X Turn the key to position 2in the ignition
lock (Y page 179).
On vehicles with KEYLESS-GO ,press the
Start/Stop button twice (Y page 179).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
70 †.
X Turn the key to position 0in the ignition
lock (Y page 179).
X Slowl yturn cap :half aturn anti-clock-
wise to allo wexcess pressure to escape.
X Turn cap :furthe ranti-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the fille rneck when cold, ther eisenough
coolant in coolant expansio ntank ;.
If the coolant level is approximatel y1.5 cm
above marker bar =in the fille rneck when
warm, ther eisenoughcoolant in coolant
expansio ntank ;.
X If necessary ,top up with coolant tha thas
been teste dand approved by Mercedes-
Benz.
X Replace cap :and turn it clockwise as far
as it will go. For furthe
rinformatio noncoolant, see
(Y page 479).
Topping up the windscreen washe rsys-
tem G
WARNING
Certai ncomponents in the engine compart-
ment could be ver yhot, e.g .the engine ,the
radiato rand parts of the exhaus tsystem.
There is ariskofi njury when accessing the
engine compartment.
As far as possible, allo wthe engine to cool
down and onl ytouch the components descri-
be dint he following. G
WARNING
If windscree nwashe rconcentrate come sinto
contact with hot components of the engine or
the exhaus tsystem ,itc an ignite .There is a
ris koff irea nd injury.
Make sure the windscree nwashe rc oncen-
trate does not come into contact with the filler neck. X
To open: pull cap:upwards by the tab.
X Top up with the premixe dwashe rfluid.
X To close: press cap :onto the fille rneck
unti lite ngages.
If the washe rfluid level drops belo wthe rec-
ommende dminimu mof1l itre, am essage
appear sinthe multifunctio ndisplay prompt-
ing yo utotop up the washe rfluid
(Y page 328). Engine compartment
383Maintenance and care Z

X
Slide the right-hand front sea ttoits rear-
mos tposition.
X Fol dfloor covering :upwards.
VIN ;can be seen. Engine number
The engine number is stampe dinto the crank-
case. Yo ucan obtain further information from
any qualified specialist workshop. Servic
eproducts and capacities Important safety notes
G
WARNING
Service product can be poisonous and haz-
ardou stohealth. There is ariskofi njury.
Observe the instructions on the respective
original containe rwhenu sing ,storing and dis-
posing off service products. Alway sstore ser-
vice products in the seale doriginal container.
Alway skeep service products ou tofthe reach
of children. H
Environmental note
Dispose of service products in an environ-
mentally-responsible manner.
Service products includ ethe following:
R fuels
R exhaus tgas aftertreatment additives, e.g.
AdBlue ®
R lubricants (e.g. engine oil, transmissio noil)
R coolant
R brake fluid
R windscreen washe rfluid
R climate control system refrigerant
Components and service products mus tbe
matched .Only us eproducts recommended
by Mercedes-Benz. Damage which is caused
by the us eofproducts which have not been
recommended is not covered by the
Mercedes-Benz warranty or goodwil lges- tures. The
yare listed in this Mercedes-Benz
Owner's Manua linthe appropriate section.
Yo uc an identif yservice products approved
by Mercedes-Benz by the following inscrip-
tions on the container:
R MB-Freigab e(e.g. MB-Freigab e229.51)
R MB Approva l(e.g. MB Approva l229.51)
Othe rdesignations or recommendations indi-
cate alevel of quality or aspecification in
accordance with an MB Shee tNum ber(e.g.
MB 229.5) .The yh aven ot necessaril ybeen
approved by Mercedes-Benz.
Othe ride ntifications ,for example:
R 0W -30
R 5W -30
R 5W -40
Further information can be obtaine dfrom any
Mercedes-Benz Service Centre or on the
Interne tath ttp://bevo.mercedes-benz.com. Fuel
Important safety notes G
WARNING
Fue lish ighl yf lammable. If yo uhandlef uel
incorrectly, ther eisariskoff irea nd explo-
sion.
Yo um usta void fire, nake dflames ,creating
sparks and smoking. Switch off the engine
and ,ifa pplicable, the auxiliary heating before
refuelling. G
WARNING
Fuels are poisonous and hazardou stohealth.
There is adanger of injury.
Do not swallo wfuelorl etit come into contact
with skin, eyes or clothing .Donot inhale fuel
vapours. Kee pfuels ou tofthe reach of chil-
dren. Servic
eproducts and capacities
473Technical data
Z