Mercedes-Benz C-Class Coupe 2019 Operator's Manual page 419

& WARNING ‑ Risk of fire and injury from
windshield washer concentrate
Windshield washer concentrate is highly
flammable. It could ignite if it comes into
contact with hot engine component parts or
the exhaust system.
Make sure that no windshield washer
#
concentrate spills out next to the filler
opening.
* NOTE Damage to the exterior lighting
due to unsuitable windshield washer fluid
Unsuitable windshield washer fluid may dam‐
age the plastic surface of the exterior light‐
ing.
Only use windshield washer fluid which
#
is also suitable for use on plastic surfa‐
ces, e.g. MB SummerFit or MB Winter‐
Fit.
* NOTE Blocked spray nozzles caused by
mixing windshield washer fluids
Do not mix MB SummerFit and MB Win‐
#
terFit with other windshield washer flu‐
ids.
Do not use distilled or de-ionized water as the fill
level sensor may be triggered erroneously.
Recommended windshield washer fluid:
Above freezing point: e.g. MB SummerFit
R
Below freezing point: e.g. MB WinterFit
R
For the correct mixing ratio, refer to the informa‐
tion on the antifreeze container.
Mix the washer fluid with the windshield washer
fluid all year round.
Refrigerant
Notes on refrigerants
Observe the notes on operating fluids
( page 412).
/
Technical data 417
* NOTE Damage due to incorrect refriger‐
ant
If a non-approved refrigerant is used, the cli‐
mate control system may be damaged.
Only use the refrigerant R‑134a
#
* NOTE Damage to the climate control
system due to incorrect refrigerant com‐
pressor oil
Only use refrigerant compressor oil that
#
has been approved by Mercedes-Benz.
Do not mix the approved refrigerant
#
compressor oil with a different refriger‐
ant compressor oil.
Work on the climate control system may be car‐
ried out only by a qualified specialist workshop.
All applicable regulations, as well as SAE stand‐
ard J639, must be adhered to.
The instruction label on the climate control sys‐
tem for the refrigerant type and the refrigerant
compressor oil is located on the inside of the
hood.