2014 MERCEDES-BENZ CLS-Class engine coolant

Display messages Possible causes/consequences and
000B Solutions
0017
Coolan
tToo Hot Sto
pV ehicl eTurn Engine Off The coolan
tistoo hot.
Aw arning tone also sounds.
G WARNING
Do no tdrive when youre ngine is overheated. Thi scan caus esome
fluids whic hmay have leaked int othe engin ecom partmen tto
catch fire.
Stea mfrom the overheated engine can alsoc auseserious burns
which can occur just by opening the hood.
There is arisk of injury.
X Pullo ver and stop the vehicl esafel yand switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicl eagainst rolling away (Y page167).
X Waitu ntil the engine ha scoole ddown.
X Make sure tha tthe air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the displaym essage goes out
and the coolant temperature is below 248 ‡(120 †).
Otherwise, the engine could be damaged.
X Pay attention to the coolant temperature display.
X If the temperature increases again, visit aqualified specialist
workshop immediately.
Under normal operating conditionsa nd with the specified coolant
level, the coolant temperature may rise to 248 ‡(120 †). Display messages
249On-board computer and displays Z

Display messages Possible causes/consequences and
000B Solutions
0002
Remove 'Start'
Button and Insert
Key The KEYLESS-GO ke
ycan continuousl ynotbe detected.
KEYLESS-GO is temporarily malfunctionin gorisdefective. A
warnin gtonea lso sounds.
X Inser tthe SmartKey into th eignition loc kand tur nittot he
desire dposition.
X Visit aqualified specialist workshop. 0002
Close Doors to
Loc
kV ehicle At leas
tone door is open. Awarning tone also sounds.
X Close all door sand loc kthe vehicle again. Indicator and warning lamps in the
instrument cluster Warning and indicator lamps
overview
001D Low-beam headlamps
(Ypage 118)
0008 Parking lamps (Y page 118)
0015 High-beam headlamps
(Ypage 119)
00020001 Turn signal (Ypage 119)
0006 Seat belts (Ypage 265)
0004 (USA) Brakes (Y page 266)
0001 (Canada)B rakes (Ypage266)
001C ABS (Ypage267)
0011 ESP®
(Y page2 69)
0009 ESP®
OFF (Y page269)
0005 SPORT handling mode in
AMG vehicles (Y page270)
0012 SRS (Ypage272)
000A Check Engine (Y page273)
0007 Reserve fuel (Ypage273)
0017 Coolant (Ypage273)
0008 Distance warning signal
(Ypage2 75)
0008 Tire pressure monitor
(Ypage2 76) 264
Indicator and warnin
glamps in the instrument clusterOn-board computer and displays

Engine
Problem Possible causes/consequences and
000B Solutions
000A
The yellow Check
Engin
ewarning lamp
light supw hile the
engin eisrunning. Ther
emay be amalfunction, for example:
R in th eenginem anagement
R in th efuel injection system
R in th eexhaust system
R in th eignition system
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.
i In som estates, you must immediately visit aqualified
specialist worksho passoon as th eyellow Chec kEngine warning
lamp lights up .This is due to the legal requirements in effect in
these states. If in doubt, check whether such legal regulations
apply in the state in which you are currently driving. 0007
The yellow reserve fuel
warning lamp lights up
while the engine is
running.
The fuel level has dropped into the reserve range.
X
Refuel at the nearest gas station. 0007
The yellow reserve fuel
warning lamp flashes
while the vehicle is in
motion.
In addition, the
000A
Check Enginew arning
lamp may light up. The fuel system pressure is too low. The fuel filler cap is not closed
correctly or the fuel system is leaking.
X
Check that the fuel filler cap is correctly closed.
X If the fuel filler cap is not correctly closed: close the fuel filler
cap.
X If the fuel filler cap is closed: visitaqualified specialist
workshop. 0017
The 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 gauge is
defective.
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 Secure the vehicle against rolling away (Y page 167).
X Consult aqualified specialist workshop. Indicator and warning lampsint
he instrument cluster
273On-board computer and displays Z

Problem Possible causes/consequences and
000B Solutions
0017
The red coolant
warning lamp comes on
while the engine is
running.
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
malfunctioning.
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 Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).
X Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 308).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X Do not start the engine again until the coolant temperature is
under 248 ‡(120 †). Otherwise ,the engine coul dbedamaged.
X Drive to the nearest qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainou sterrain, and stop-and-go traffic. 0017
The red coolant
warning lamp comes on
while the engine is
running.
Awarning tone
also sounds. The coolant temperature has exceeded 248
‡(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 coole dsufficiently and may be damaged.
Do not drive whe nyour engine is overheated. This can cause some
fluids which may have leaked into the engine compartment to
catchf ire.
Steam from the overheated engine can also cause serious burns
which can occur just by opening the hood.
There is arisk of injury.
X Observe the additional display messages in the multifunction
display.
X Pull over and stop the vehicle safely and switch off the engine,
paying attention to road and traffic conditions.
X Secure the vehicle against rolling away (Y page 167).274
Indicator and warning lampsint
he instrument clusterOn-board computer and displays

Problem Possible causes/consequences and
000B Solutions
X
Leave the vehicle and keep asafe distance from the vehicle until
the engine has cooled down.
X Check the coolant level and add coolant, observing the warning
notes (Y page 308).
X If you need to add coolant more often than usual, have the
engine coolant system checked.
X Make sure that the air supply to the engine radiator is not
blocked, e.g. by snow, slush or ice.
X At coolant temperatures under 248 ‡(120 †), drive to the next
qualified specialist workshop.
X Avoid subjecting the engine to heavy loads, e.g. driving in
mountainou sterrain, and stop-and-go traffic. Driving systems
Problem Possible causes/consequencesa
nd000B Solutions
0008
The red distance
warning lamp lights up
while the vehicle is in
motion.
The distance to the vehicle in front is too smal
lfor the speed
selected.
X Increase the distance. 0008
The red distance
warning lamp lights up
while the vehicle is in
motion
.Awarning tone
also sounds. You are approaching
avehicle or astationary obstacle 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.
Further information on PRE-SAFE ®
Brake (Y page 72). Indicator and warning lampsint
he instrument cluster
275On-board computer and displays Z

Adding engin
eoil G
WARNING
If engin eoil comes int ocontac twithh ot
component sintheengin ecom partment, it
may ignite. There is ariskoff irea nd injury.
Mak esuret hate ngineo il is no tspilled next
to the filler neck. Let the engin ecool down
and thoroughly clean the engin eoil off the
component sbefore starting the engine. H
Environmental note
When adding oil, take care not to spill any. If
oil enters the soil or waterways, it is harmful
to the environment.
! Only use engin eoils and oil filter sthat
have been approved for vehicles with a
servic esystem. You can obtain alist of the
engin eoils and oil filter stested and
approved in accordance with the
Mercedes-Benz Specification sfor Service
Product satany Mercedes-Benz Service
center.
Damage to the engin eorexhaust system is
caused by the following:
R using engin eoils and oil filter sthat have
not been specifically approved for the
servic esystem
R replacing engin eoil and oil filter safter
the interval for replacemen tspecified by
the servic esystem has been exceeded
R using engin eoil additives.
! Do not add too much oil. adding too much
engin eoil can result in damage to the
engin eortot he catalytic converter. Have
excess engin eoil siphoned off. Example: engin
eoil cap
X Turn cap 001Acounter-clockwise and remove
it.
X Add engin eoil.
If the oil level is at or below the MIN mark
on the oil dipstick, add 1.1 US qt (1.0 liter)
of engine oil.
X Replace cap 001Aon the fille rneck and turn
clockwise.
Ensur ethatthe cap locks into place
securely.
X Check the oi llev el agai nwith the oil
dipstick (Y page 307).
Further information on engine oil
(Y page 375). Additiona
lservice products
Checking coolant level G
WARNING
The engine cooling system is pressurized,
particularly when the engine is warm. When
opening the cap, you could be scalde dbyhot
coolan tspraying out. There is arisk of injury.
Let the engin ecool down before openin gthe
cap. Wear eye and hand protection when
openin gthe cap. Open the cap slowly half a
turn to allow pressure to escape. 308
Engine compartmentMaintenance and care

X
Park the vehicle on alevel surface.
Only check the coolant level when the
vehicle is on alevel surface and the engine
has cooled down.
X Turn the SmartKey to position 2in the
ignition lock (Y page 147).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice (Y page 147).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
158 ‡(70 †).
X Turn the SmartKey to position
0(Y page 147) in the ignition lock.
X Slowly turn cap 001Ahalf aturn counter-
clockwise to allow excess pressure to
escape.
X Turn cap 001Afurther counter-clockwise and
remove it.
If the coolant is at the level of marker bar
0024 in the filler neck when cold, there is
enough coolant in coolant expansion
tank 0010.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar 0024in the fuel
filler neck when warm, there is enough
coolant in expansion tank 0010.
X If necessary, add coolant that has been
tested and approved by Mercedes-Benz.
X Replace cap 001Aand turn it clockwise as far
as it will go.
For further information on coolant ,see
(Y page 377). Adding washer fluid to the windshield
washer system/headlam
pcleaning
system G
WARNING
Windshield washer concentrate is highly
flammable. If it comes int ocontac twith hot
engin ecomponent sorthe exhaust syste mit
could ignite. There is ariskoff ire and injury.
Make sure that no windshield washer
concentrate is spilled nex ttothe filler neck. X
To open: pull cap001Aupwards by the tab.
X Add the premixed washer fluid.
X To close: press cap 001Aontothe filler neck
until it engages.
The washer fluid reservoir is used for both the
windshield washer system and the headlamp
cleaning system.
If the washer fluid level drops below the
recommended minimum of 1liter ,am essage
appears in the multifunction display
promptin gyou to refill the washer fluid
(Y page 262).
Further information on windshield washer
fluid/antifreeze (Y page 378). Maintenance
ASSYST PLUS
Service messages The ASSYS
TPLUS service interval display
inform syou of the nex tservice due date. Maintenance
309Maintenance and care Z

Example: vehicl
eide ntification plate (Canada only)
0010 VIN
0024 Paint code
i The data shown on the vehicle
identificatio nplate is used only as an
example. This data is differen tfor every
vehicle and can deviate from the data
shown here. You can find the data
applicabl etoyour vehicle on the vehicle
identification plate. VIN
X
Slide the right-hand front seat to its
rearmost position.
X Fold floor covering 001Aupwards.
You will see VIN 0010.
The VIN can also be found in the following
locations:
R on the lower edge of the windshield
(Y page 373)
R on the vehicle identification plate
(Y page 372) Engine number
001A
Emission control information plate,
including the certification of both federal
and Californian emissions standards
0010 Engine number (stamped into the
crankcase)
0024 VIN (on the lower edge of the windshield) Service products and filling
capacities
Important safety notes
G
WARNING
Servic eproducts may be poisonous and
hazardous 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. H
Environmental note
Dispose of service products in an
environmentally responsible manner.
Servic eproducts include the following:
R Fuels
R Lubricants (e.g. engine oil, transmission oil)
R Coolant
R Brake fluid
R Windshield washer fluid
R Climate control system refrigerant Service products and filling capacities
373Technical data Z