Mercedes-Benz E-Class Coupe 2021 Operator's Manual page 140

138 Climate control
Make sure that all vehicle occupants
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always maintain a sufficient distance
from the air vents.
If necessary, direct the airflow to
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another area of the vehicle interior.
To guarantee the flow of fresh air through the air
vents into the vehicle interior, comply with the
following:
Always keep the vents and vent grilles in the
R
vehicle interior free.
Keep the air inlet free of residue build-up
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( page 276).
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To open or close: hold the air vent
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center and turn it to the left or right as far as
it will go.
To set the airflow direction: hold air
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vent 1 in the center and move it up or down
or to the left or right.
Adjusting the rear air vents
To open or close: hold air vent
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center and turn it to the left or right as far as
it will go.
To set the airflow direction: hold air
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vent 1 in the center and move it up or down
or to the left or right.
1 in the Adjusting the AIRSCARF vents
& WARNING Risk of burns caused by the
heating output from AIRSCARF being too
high
When AIRSCARF is switched on, very hot air
can flow from the outlet opening in the head
restraints.
Turn the heating output down in good
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time.
Maintain a suitable distance from the
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outlet opening.
* NOTE Damage caused to AIRSCARF by
the use of protective covers
If a protective cover is placed over the front
seat head restraints, the flow of air from the
1 in the AIRSCARF vent is hindered.
This can cause AIRSCARF to overheat and be
damaged.
Do not use protective covers on head
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restraints with AIRSCARF.