Mercedes-Benz GLS 2020 Operator's Manual page 502

500 Technical data
Coolant capacity
Coolant capacity
Model Capacity
All models 9.5 US qt (9.0 liters)
Notes on windshield washer fluid
Observe the notes on operating fluids
( page 496).
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& 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
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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‐
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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 refrigerant
Observe the notes on operating fluids
( page 496).
/
* 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
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* NOTE Damage to the climate control
system due to incorrect refrigerant com‐
pressor oil
Only use refrigerant compressor oil that
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has been approved by Mercedes-Benz.