check engine MERCEDES-BENZ C-Class COUPE 2017 CL205 Service Manual

The antifreeze concentrate/corrosion inhibitor
concentration in the engine cooling system
should:
Rbe at least 50%. This will protectthe engine
cooling system against freezin gdown to
approximately -35 ‡(-37 †).
Rnot exceed 55% (antifreez eprotection down
to -49 ‡[-45 †]) .Otherwise, hea twilln ot be
dissipated as effectively.
Mercedes-Benz recommends an antifreeze/
corrosion inhibito rconcentrate in accordance
with MB Specifications for Service Products
310.1.
iWhe nthe vehicl eisfirst delivered, it is filled
with acoolant mixture thate nsures adequate
antifreeze and anti-corrosion protection.
iThe coolant is checked with every mainte-
nance intervalataq ualified specialist work-
shop.
Fillin gcapacities
ModelCapacity
Mercedes ‑AMG
vehicles12.6 US qt (11.9 l)
Allo ther models9.5 US qt (9.0 l)
Windshield washe rsystem
Important safety notes
GWARNING
Windshiel dwasher concentrate coul dignite 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 filler neck.
!Only use washer flui dthat is suitabl efor
plastic lam plenses, e.g. MB SummerFi torMB
WinterFit. Unsuitabl ewasher flui dcoul ddam-
age the plastic lense softhe headlamps.
!Only MB SummerFi tand MB WinterFit
washer flui dshould be mixed together. The
sprayn ozzles may otherwise become
blocked. Do not use distille
dorde-ionized water, other-
wise, the leve lsensor may give afals ereading.
When handling washer fluid, observe the impor-
tant safety notes on service products
(
Ypag e344).
At temperatures above freezing:
XFill the washer flui dreservoir with amixture of
water and windshield washer fluid, e.g. MB
SummerFit.
Add 1part MB SummerFi tto100 parts water.
At temperatures below freezing:
XFill the washer flui dreservoir with amixture of
water and washer fluid, e.g. MB WinterFit.
For the correct mixing ratio refer to the infor-
mation on the antifreeze reservoir.
iAdd windshield washer fluid, e.g. MB Sum-
merFit or MB WinterFit, to the washer flui dall
yea rround.
Climate control systemr efrigerant
Important safety notes
The climate control syste mofyourvehicleisf il-
led with refrigerant R ‑134a.
The instructio nlabel regarding the refrigerant
type use dcan 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. Otherwise, the climate
control syste mmay be damaged.
Service work, such as refilling with refrigerant or
replacing component parts, may only be carried
out by aqualified specialist workshop. All appli-
cabl eregulations, as wel lasSAE standard J639,
must be adhered to.
Always have work on the climate control system
carrie dout at aqualified specialist workshop.
348Service products and filling capacities
Technical data