2017 MERCEDES-BENZ SLC coolant level

Problem
Possible causes/consequences and P Solutions
The coolant temperature
gauge shows av alue
above 248 ‡( 120 †).
The coolant warning
lamp may also be on and
aw arning 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 233). Observe the warning notes
as you do so and add 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
At coolant temperatures below 248 ‡( 120 †), drive to the nearest
qualified specialist workshop. X
Avoid heavy loads on the engine as you do so, e.g. driving in moun-
tainou st errai na nd stop-and-go traffic.
DYNAMIC SELEC Tb uttonUse the DYNAMIC SELECT button to change the
drive program. Depending on the drive program
selected the following vehicle characteristics
wil lc hange: R
the drive (engine and transmission manage-
ment) R
the suspensio n( vehicles with adaptive
adjustabl ed amping or AMG sports suspen-
sion) R
the steering R
the availability of the ECO start/stop function
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program C is
activated. For further information about starting
the engine, see ( Y
pag e1 16).
X
Press DYNAMIC SELECT button C as many
times as necessary until the desired drive
progra miss elected.
The selected drive progra ma ppears in the
multifunction display. After as hort time the displa yg oes out and the status icon of the
selected drive progra ma ppears.
In addition, the current drive progra ms ettings
are displayed briefly in the multimedi as ystem
display.
i In af ew countries, the ECO start/stop func-
tion is deactivated at the factory due to the
available fuel grade. In this case, the ECO
start/stop function is not available in any
drive program, regardless of the displa yint he
multimedi as ystem display.
Availabl ed rive programs:
C Comfort Comfortabl ea nd economi-
cal driving characteristics
S Sport Sporty driving characteris-
tics
S+ Sport Plus Particularly sporty driving
characteristics
I Individual Individua ls ettings
E Economy Particularly economical
driving characteristics
Additional information for drive programs
( Y
pag e1 25).DYNAMI CS ELEC Tb utton 121
Driving and parking Z

Coolan tt emperatur eg auge
G WARNING
Opening th eh ood when th ee ng in eiso ver-
heated or when there is af ir eint he engine
compartmen tc oul de xp ose you to hot gases
or other servic ep roducts. Ther eisar is ko f
injury.
Let an overheate de ng in ec oo ld own before
opening th eh ood .Ift he re is af ir eint he
engin ec ompartment, keep th eh ood closed
and contac tt he fir ed epartment.
! Ad isplay message is shown if th ec oolant
temperatur eist oo high.
If th ec oolant temperatur eiso ve r2 48 ‡
(12 0† ), do no tc ontinue driving .T he engine
will otherwise be damaged.
The coolant temperatur eg age is in th ei nstru-
men tc luste ront he right-han ds ide ( Y
page 31).
The H markin gint he coolant temperatur eg auge
corresponds to ac oolant temperatur eo f
approximately 24 8‡ (12 0† ).
Under normal operatin gc ondition sa nd at the
correc tc oolant level, th ec oolant temperature
gauge may ris etot he H marking. Operatin gt he on-boar dc omputer
Overview
C
Multifunction display D
Right control panel

X
Park the vehicle on al evel surface.
Only check the coolant level when the vehicle
is on al evel surface and the engine has cooled
down. X
Turn the SmartKey to position 2 in the ignition
lock ( Y
page 115).
On vehicles with KEYLESS-GO, press the
Start/Stop button twice ( Y
page 115).X
Check the coolant temperature gauge in the
multifunction display.
The coolant temperature must be below
158 ‡( 70 †).X
Turn the SmartKey to position 0 ( Y
page 115)
in the ignition lock. X
Slowly turn cap D half at urn counter-clock-
wise to allow excess pressure to escape. X
Turn cap D further counter-clockwise and
remove it.
If the coolant is at the level of marker bar

The antifreeze/corrosion inhibitor concentra-
tion in the engine cooling system should: R
be at least 50%. This will protec tt he engine
cooling system against freezin gd own to
approximately -35 ‡( -37 †).R
not exceed 55% (antifreez ep rotection down
to -49 ‡[ -45 †]). Otherwise, heat will not be
dissipated as effectively.
If the vehicle has lost coolant, add equal
amounts of water and antifreeze/corrosion
inhibitor.
Mercedes-Benz recommends an antifreeze/
corrosion inhibitor concentrate in accordance
with MB Specifications for Servic eP roducts
310.1.
i When the vehicle is first delivered, it is filled
with ac oolant mixture that ensures adequate
antifreeze and anti-corrosion protection.
i The coolant is checked with every mainte-
nanc ei nterval at aq ualified specialist work-
shop.
Fillin gc apacitiesMissing values were not availabl eatt ime of
going to print.
Model Capacity
SLC 300
Approx .8 .5 US qt
(8.0 l)
Mercedes ‑ Benz
SLC 43 AMG
Windshield washer system
Important safety notes
G WARNING
Windshield washer concentrate could ignite if
it comes into contact with hot engine compo-
nent sort he exhaust system. There is ar isk of
fire and injury.
Make sure that no windshield washer con-
centrate is spilled next to the filler neck.
! Only use washer fluid that is suitable for
plastic lamp lenses, e.g. MB SummerFit or MB
WinterFit. Unsuitable washer fluid could dam-
age the plastic lenses of the headlamps. ! Only MB SummerFit and MB WinterFit
washer fluid should be mixed together. The
spray nozzles may otherwise become
blocked.
Do not use distilled or de-ionised water. Other-
wise, the level sensor may give af alse reading.
When handling washer fluid, observe the impor-
tant safety notes on service products
( Y
page 284).
At temperatures above freezing: X
Fill the washer fluid reservoir with am ixture of
water and windshield washer fluid, e.g. MB
SummerFit. X
Add 1p art MB SummerFit to 100 parts water.
At temperatures below freezing: X
Fill the washer fluid reservoir with am ixture of
water and washer fluid, e.g. MB WinterFit.
For the correc tm ixing ratio refer to the infor-
mation on the antifreeze reservoir.
i Add windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer fluid all
year round.
Climate control system refrigerant
Important safety notes The climate control system of your vehicle is fil-
led with refrigerant R ‑ 134a.
The instruction label regarding the refrigerant
type used can be found on the radiator cross
member.
! Only the refrigerant R ‑ 134a and the PAG oil
approved by Mercedes-Benz may be used.
The approved PAG oil may not be mixed with
any other PAG oil that is not approved for
R-134a refrigerant .O therwise, the climate
control system may be damaged.
Servic ew ork, such as refilling with refrigerant or
replacing component parts, may only be carried
out by aq ualified specialist workshop. All appli-
cable regulations, as well as SAE standard J639,
must be adhered to.
Always have work on the climate control system
carried out at aq ualified specialist workshop.288
Service products and filling capacities
Technical data