Mercedes-Benz S-Class 2020 Owner's Manual page 190

It is possible to make use of the residual heat
from the engine to continue heating or ventilat‐
ing the front compartment of the vehicle for
approximately 30 minutes, depending on the
temperature set.
To switch on: select Residual heat
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climate bar on the central display.
Residual heat will be switched off automatically.
Switching residual heat on/off via the rear
operating unit
Requirements:
The residual heat function is available.
R
The vehicle is parked.
R
The coolant temperature must be sufficiently
R
high.
When the residual heat of the engine is activated
in the rear compartment, you can heat or venti‐
late the front and rear compartments for approx‐
imately 15 minutes.
Press button 4.
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Activating/deactivating ionisation
Multimedia system:
Climate menu
4
Ionisation improves the quality of the vehicle's
interior air. Ionisation of the interior air is odour‐
on the
less.
Select Ionisation.
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% The function can only be performed if the
AUTO mode is activated or the air distribu‐
tion is set to the side air vent. The function is
restricted if the side air vents on the driver's
side are closed.
Fragrance system
Setting the fragrance system
Requirements:
The climate control system is switched on.
R
The glove box is closed.
R
A flacon is inserted.
R
Air quality
5
Climate control 187
Multimedia system:
Climate menu Air quality
4 5
The fragrance system distributes a pleasant fra‐
grance throughout the vehicle interior from a fla‐
con located in the glove box.
Select Air freshener.
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Keep pressing until the desired intensity is
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reached.
Inserting or removing the flacon of the fra‐
grance system
& WARNING Risk of injury from liquid per‐
fume
If children open the flacon, they could drink
the liquid perfume or it could come into con‐
tact with their eyes.
Do not leave children unattended in the
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vehicle.
Consult a doctor immediately if liquid
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perfume has been drunk.