2017 MERCEDES-BENZ C-Class COUPE coolant

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
8NThe yellow reserve fuel warning lamp flashes while the vehicleisinm otion.
In addition, the ;Check Engine warning lamp may light up.
The fuel filler cap is not closed correctly or the fuel system is leaking.
XCheck that the fuel filler cap is correctly closed.
XIf the fuel filler cap is not correctly closed: close the fuel filler cap.
XIf the fuel filler cap is closed:visitaqualified specialist workshop.
?NThe red coolant warning lamp lights up while the engine is running and the
coolant temperature gauge is at the start of the scale.
The temperature sensor for the coolant temperature gage is defective.
The coolant temperature is no longer being monitored .There is arisk of engine
damage if the coolant temperature is too high.
XPul lover and stop the vehicles afelyand switch off the engine, paying attention
to road and traffic conditions. Do not continue driving under any circumstances.
XSecure the vehiclea gainst rolling away(Ypage152).
XConsult aqualified specialist workshop.
Warning and indicator lamps in the instrument cluster253
On-board computer and displays
Z

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
?NThe red coolant warning lamp comes on while the engine is running.
The coolant leve listoo low.
If the coolant leve liscorrect, the airflow to the engine radiator may be blocked or
the electric engine radiator fan may be malfunctioning.
The coolant is too hot and the engine is no longer being cooleds ufficiently.
XObserve the additionaldisplay messages in the multifunction display.
XPul lover and stop the vehicles afelyand switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehiclea gainst rolling away(Ypage152).
XLeave the vehiclea nd keepasafe distance from the vehicleu ntil the engine has
cooledd own.
XCheck the coolant leve land add coolant, observing the warning notes
(Ypag e290).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the air supply to the engine radiator is not blocked ,e.g. by snow,
slush or ice.
XDo not start the engine again until the coolant temperature is below 248 ‡
(120 †). Otherwise, the engine coul dbedamaged.
XDrive to the neares tqualified specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
?NThe red coolant warning lamp comes on while the engine is running. Awarning
tone als osounds.
The coolant temperature has exceeded2 48‡(120 †). The airflow to the engine
radiator may be blocked or the coolant leve lmay be too low.
GWARNING
The engine is not being cooleds ufficiently and may be damaged.
Do not drive whe nyoure ngine is overheated. This can cause some fluids which
may have leaked into the engine compartment to catch fire.
Steam from the overheated engine can also cause serious burns which can occur
just by opening the hood.
There is arisk of injury.
XObserve the additiona ldisplaym essages in the multifunction display.
XPullover and stop the vehicle safely and switch off the engine, paying attention
to road and traffic conditions.
XSecure the vehicle against rolling away (Ypag e152).
XLeav ethe vehicle and keep asafe distance from the vehicle until the engine has
coole ddown.
XCheck the coolant leve land add coolant, observing the warning notes
(Ypag e290).
XIf you have to add coolant frequently, have the engine cooling system checked.
XMake sure that the ai rsupply to the engine radiator is not blocked, e.g. by snow,
slush or ice.
254Warning and indicator lamps in the instrument cluster
On-board computer and displays

Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
XAt coolant temperatures below 248 ‡(120 †), drive to the neares tqualified
specialist workshop.
XAvoid heavy loads on the engine as you do so, e.g. driving in mountainous terrain
and stop-and-go traffic.
Driving systems
Warning/
indicator
lampNSignal type
Possiblec auses/consequences and M
Solutions
·NThe red distance warning lamp lights up while the vehicleisinm otion.Awarning
tone als osounds.
You are approaching avehicle, apedestrian or astationary obstacl einyourline of
travel at too high aspeed.
XBe prepared to brake immediately.
XPay carefu lattention to the traffic situation. You may have to brake or take
evasive action.
Further information on PRE ‑SAFE
®Brake (Ypage70).
For further information about the distance warning function of COLLISION PRE-
VENTION ASSIST PLUS, see (
Ypag e64).
Warning and indicator lamps in the instrument cluster255
On-board computer and displays
Z

Checking theoil level usin gthe oil dip-
stick
Example
XPull oil dipstick :out of th edipstick guide
tube.
XWipe off oil dipstick :.
XSlowly slide dipstick :intothe guide tub eto
th es top, and tak eitout again after approx-
imately 3seconds.
If th elevelisb etween MIN mark =and MAX
mark ;,theoil leve liscorrect.
XIf theoil leve lhas dropped to MIN mark =or
below, add 1. 1USqt(1.0l iter) of engineo il.
Adding engine oil
HEnvironmental note
When addingo il, takecaren otto spill any. If
oil enters th esoil or waterways, it is harmful to
th ee nvironment.
!Only use engineo ils and oil filters that have
been approved for vehicle swithas ervicesys-
tem. You can obtain alist of th eengineo ils
and oil filters tested and approved in accord- anc ewitht heMercedes-Ben zSpecifications
for Servic eProduct satany Mercedes-Benz
Servic ecenter.
Damage to th eengineore xhaust system is
caused by th efollowing:
Rusinge ngineo ils and oil filters that have not
been specifically approved for th eservice
system
Rreplacin gengineo il and oil filters after the
interval for replacements pecifiedbythe
servic esystem has been exceeded
Rusinge ngineo il additives.
!Do no tadd to omucho il. addingt oomuch
engineo il can result in damagetot heengine
or to th ecatalyti cconverter. Hav eexcess
engineo il siphoned off.
Example
XTurn cap :counter-clockwise and remove it.
XAdde ngineo il.
If th eoil leve lisatorb elow theMIN mar kon
th eo il dipstick ,add 1. 1USq t(1.0 l)of engine
oil.
XReplace cap :on the filler neck and turn
clockwise.
Ensure that the cap locks into place securely.
XCheck the oil level again with the oil dipstick
(Ypage 289).
Further information on engine oil (
Ypage 346).
Additional service products
Important safety notes
GWARNING
Certain components in the engine compart-
ment,s uch as the engine, radiator and parts
of the exhaust system, can become very hot.
Working in the engine compartment poses a
risk of injury.
Where possible, let the engine cool down and touch only the components described in the
following.
GWARNING
The cooling system is pressurized, particularly
when the motor is warm. If you open the cap,
you could be scalded if hot coolant sprays out.
There is arisk of injury.
Engine compartment289
Maintenance and care
Z

Let the engine cool down before you open the
cap. Wear gloves and eye protection. Slowly
open the cap to relieve pressure.
GWARNING
Windshield washer concentrate could ignite if it comes into contact with hot engine compo-
nents or the exhaust system. There is arisk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the fillern eck.
Checking coolant level
XPark the vehicle onalevel surface.
Only check the coolant level when the vehicle
is on alevel surface and the engine has cooled
down.
XTurn the SmartKey to position 2in the ignition
lock (Ypage 131).
or
XOn vehiclesw ith KEYLESS-GO, press the
Start/Stop button twice (Ypage 131).
XCheck the coolant temperature display in the
instrument cluster (Ypage 201).
The coolant temperature must be below
158 ‡(70 †).
XTurn the SmartKey to position 0in the ignition
lock (Ypage 131).
or
XOn vehiclesw ith KEYLESS-GO, pul lthe Start/
Stop button from the ignition lock
(
Ypage 131).
XSlowl yturn cap :half aturn counter-clock-
wise to allow excess pressure to escape.
XTurn cap :further counter-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the fillern eck when cold, there is enough
coolant in coolant expansio ntank ;.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar =in the fillern eck
when warm, there is enough coolant in expan-
sion tank ;.
XIf necessary ,add coolant that has been tested
and approved by Mercedes-Benz.
XReplace cap :and turn it clockwise as far as
it wil lgo.
For further information on coolant, see
(
Ypage 347).
Adding washe rfluid to the windshield
washe rsystem
XTo open: pullcap : upwards by the tab and
open.
XAdd the premixed washer fluid.
XTo close: press cap :onto the fillern eck
until it engages.
If the washer flui dlevel drops belowt he recom-
mended minimum of 1liter, amessag eappears
in the multifunction display prompting you to
add washer flui d(
Ypage 245).
Further information on windshield washer fluid/
antifreeze (
Ypage 348).
ASSYST PLUS
Servic emessage
The ASSYST PLUS service interval display
informs you of the next service due date.
290ASSYST PLUS
Maintenancea nd care

Rlights
Rseals
Rtrim
Rventilation slots
Damaged seals or electrical component scan
lead to leaks or failures.
!If the SmartKey is within the rear detection
rang eofK EYLESS-GO, the followings itua-
tions, for example, could lead to the uninten-
tional opening of the trunk:
Rusing acar wash
Rusing apower washer
Make sure that the SmartKey is at least 10 ft
(3 m) away fromt he vehicle.
!Edition1special model: partsofy our vehi-
cle are covered with adecorative foil. Main-
tain adistanc eofatl east 70 cm betwee nthe
foil-wrapped partsoft he vehicle and the noz-
zle of the high pressure cleaner.
Information about the correctd istanceis
available fromt he equipmentm anufacturer.
Move the power washer nozzle around when
cleaning your vehicle.
Cleaning th epaintwork
!Do not affix:
Rstickers
Rfilms
Rmagnetic plates or similar items
to painted surfaces. You could otherwise
damage the paintwork.
Scratches, corrosived eposits, areas affected by
corrosiona nd damage caused by inadequate
care cannot always be completely repaired. In
such cases ,visit aqualified specialist workshop.
XRemove dirt immediately, where possible,
while avoidingr ubbingtoo hard.
XSoak insect remainsw ith insect remover and
rinse off the treated areas afterwards.
XSoak bird droppings with water and rinse off
the treated areas afterwards.
XRemove coolant, brakef luid, tree resin,oils,
fuels and greases by rubbingg ently with a
clot hsoaked in petroleum ether or lighter
fluid.
XUse tar remover to remove tar stains.
XUse silicone remover to remove wax. If water no longer forms "beads" on the paint
surface, use the paint care products recommen-
ded and approved by Mercedes-Benz. This is the
case approximately everyt
hree to five months,
depending on the climat econdition sand the
care productu sed.
If dirt has penetrate dthe paint surfaceorift he
paint has becom edull, the paint cleaner recom-
mended and approved by Mercedes-Benz
should be used.
Do not use these care products in the sun or on
the hood while the hood is hot.
XUse asuitable touch-up stick, e.g. MB Touch-
Up Stick ,torepair slight damage to the paint-
work quickly and provisionally.
Matte finish care
!Never polish the vehicle or the light alloy
wheels. Polishingc auses the finish to shine.
!The followingmay cause the paint to
becom eshinya nd thus reducet he matte
effect:
Rstrong rubbingoft he paintwork with
unsuitable materials
Rfrequent use of automatic car washes
Rwashing the vehicle in directs unlight
!Never use paint cleaner, buffingorp olishing
products, or gloss preserver,e .g. wax. These
products are only suitable for high-gloss sur-
faces. Their use on vehicles with matt efinish
leads to considerable surfaced amage (shiny,
mottled areas).
Always have paintwork repairs carried out at a
qualified specialist workshop.
!Do not use wash programs with ahot wax
treatment under any circumstances.
Observe these notes if your vehicle has aclear
matt efinish. This will help you to avoid damage
to the paintwork due to incorrect treatment.
These notes also apply to light alloy wheels with ac lear matt efinish.
The vehicle should preferably be washed by
hand using asoft sponge, car shampooa nd
plent yofw ater.
Use only insect remover and car shampoof rom
the rang eofapproved Mercedes-Ben zcare
products.
294Care
Maintenance and care

Uniform TireQualityG rading Standards
Aunifor mstandard to grade the quality of tires
with regards to tread quality, tire traction and
temperature characteristics. The quality grad-
ing assessmentism ade by the manufacturer
following specification sfrom the U.S .govern-
ment .The ratings are molded int othe sidewall of
the tire.
Recommended tir epressures
The recommended tire pressure applies to the
tires mounted at the factory.
The Tire and Loading Information placard con-
tains the recommended tire pressures for cold
tires on afully loaded vehicle and for the maxi-
mum permissible vehicle speed.
The tire pressure table contains the recommen-
ded pressures for cold tires for various operat-
ing conditions, i.e. differingl oad and speed con-
ditions.
Increased vehicle weight due to optional
equipment
The combined weight of all standard and
optional equipment available for the vehicle,
regardless of whether it is actually installed on
the vehicle or not.
Rim
This is the part of the wheel on which the tire is
mounted.
GAWR (Gross Axle Weight Rating)
The GAWR is the maximum gross axle weight
rating. The actual load on an axle must never
exceed the gross axle weight rating. The gross
axle weight ratin gcan be found on the vehicle
identification plate on the B-pillar on the driver's
side.
Speed rating
The speed ratin gispart of the tire identification.
It specifies the speed range for which the tire is
approved.
GVW (Gross Vehicle Weight)
The gross vehicle weight includes the weight of
the vehicle includin gfuel, tools, the spare wheel,
accessories installed, occupants, luggage and
the drawbar noseweight ,ifapplicable. The gross
vehicle weight must not exceed the gross vehi-
cle weight ratin gGVWR as specified on the vehi-
cle identification plate on the B-pillar on the
driver'ss ide.
GVWR(Gross Vehicle Weight Rating)
The GVWR is the maximum permissible gross
weight of afully loaded vehicle (the weight of the
vehicle includin gall accessories, occupants,
fuel, luggage and the drawbar n
oseweight
,if
applicable). The gross vehicle weight ratin gis
specified on the vehicle identification plate on
the B-pillar on the driver'ss ide.
Maximum loaded vehicle weight
The maximum weight is the sum of:
Rthe curb weight of the vehicle
Rthe weight of the accessories
Rthe load limit
Rthe weight of the factory installed optional
equipment
Kilopascal (kPa)
Metric unit for tire pressure. 6.9 kPa corre-
sponds to1psi. Another unit for tire pressure is
bar. 100 kilopascals (kPa) are the equivalent of
1b ar.
Load index
In addition to the load-bearin gindex ,the load
index may also be imprinted on the sidewall of
the tire. This specifies the load-bearin gcapacity
more precisely.
Curb weight
The weight of avehicle with standard equipment
includin gthe maximum capacityoff uel, oil and
coolant .Italso includes the air-conditionin gsys-
tem and optional equipment if these are instal-
led in the vehicle, but does not include passen-
gers or luggage.
Maximum load rating
The maximum tire load is the maximum permis-
sible weight in kilogram sorlbs for which atire is
approved.
Maximum permissible tir epressure
Maximum permissible tire pressure for one tire.
Maximum load on one tire
Maximum load on one tire. This is calculated by
dividing the maximum axle load of one axle by
two.
334All about wheels and tires
Wheels and tires

from the data shownhere. You can find the
data applicable to you rvehicleont he vehicle
identificatio nplate.
Vehicle identification number (VIN)
XSlid ethe right-hand front seattoi ts rearmost
position.
XFold floor covering ;upwards.
The VIN is visible :.
The VIN can als obefound on the vehicl eiden-
tification plate (
Ypag e343).
The VIN can als obefound at the lower edge of
the windshield (
Ypag e344).
Engine number
:Engine numbe r(stamped into the crank-
case)
;VIN (on the lower edge of the windshield)
=Emissio ncontrol information plate, includ-
ing the certification of both federala nd Cali-
fornia nemissions standards
Service products and filling capaci-
ties
Important safety notes
GWARNING
Service products may be poisonousa nd haz-
ardous to health. There is arisk of injury.
Comply with instructions on the use ,storage
and disposal of service products on the labels
of the respective original containers. Always
store service products sealed in their original
containers. Always keep service products out
of the reach of children.
HEnvironmental note
Dispos eofservice products in an environ-
mentall yresponsiblem anner.
Service products include the following:
RFuels
RLubricants (e.g. engine oil ,transmission oil)
RCoolant
RBrake fluid
RWindshiel dwasher fluid
RClimate control syste mrefrigerant
Components and service products must match.
Only use products recommendedbyM ercedes-
Benz. Damag ewhich is caused by the use of
products which have not been recommendedi s
not covered by the Mercedes-Benz warranty or
goodwil lgestures. They are listed in this
Mercedes-Benz Operator's Manual in the appro- priate section.
Informatio nontested and approved products
can be obtained at an authorized Mercedes-
Benz Center or on the Internet at
http://bevo.mercedes-benz.com.
You can recognize service products approved by
Mercedes-Benz by the following inscription on
the containers:
RMB-Freigabe (e.g. MB-Freigabe 229.51)
RMB-Approval( e.g. MB-Approval2 29.51)
Other designations or recommendations indi-
cate alevelofq uality or aspecificatio nin
accordance with an MB Sheet Number (e.g. MB
229.5). They have not necessarily been
approved by Mercedes-Benz.
344Service products and filling capacities
Technical data