Mercedes-Benz S-Class 2022 Owner's Manual page 500

At https://bevo.mercedes-benz.com
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In the Mercedes-Benz BeVo App
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At a qualified specialist workshop
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* NOTE Overheating at high outside temper-
atures
If an inappropriate coolant is used, the cooling
system is not sufficiently protected against
overheating and corrosion at high outside
temperatures.
Only use coolant approved for
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Mercedes-Benz.
Observe the instructions in the
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Mercedes-Benz Specifications for Oper-
ating Fluids 320.1.
Have the coolant regularly replaced at a qualified
specialist workshop.
Proportion of antifreeze concentrate in the cool-
ing system:
A minimum of 50% (antifreeze protection down
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to about -37°C)
A maximum of 55% (antifreeze protection
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down to -45°C)
Notes on windscreen washer fluid
Observe the notes on operating fluids
( page 488).
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& WARNING ‑ Risk of fire and injury due to
windscreen washer concentrate
Windscreen washer concentrate is highly flam-
mable. It could ignite if it comes into contact
with hot engine component parts or the
exhaust system.
Make sure that no windscreen washer
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concentrate spills out next to the filler
opening.
* NOTE Damage to the exterior lighting due
to unsuitable windscreen washer fluid
Unsuitable windscreen washer fluids may
damage the plastic surface of the exterior
lighting.
Technical data 497
Only use windscreen washer fluids which
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are also suitable for use on plastic surfa-
ces, e.g. MB SummerFit or MB WinterFit.
* NOTE Blocked spray nozzles caused by
mixing windscreen washer fluids
Do not mix MB SummerFit and MB Win-
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terFit with other windscreen washer flu-
ids.
Do not use distilled or de-ionised water. Other-
wise, the fill level sensor may be triggered errone-
ously.
Recommended windscreen washer fluid:
above freezing point: e.g. MB SummerFit
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below freezing point: e.g. MB WinterFit
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For the correct mixing ratio, refer to the informa-
tion on the antifreeze container.
Mix washer fluid with windscreen washer fluid all
year round.