Mercedes-Benz E-Class Coupe 2020 Owner's Manual page 154

Make sure that there are no objects covering the
air inlet grille on the back of the head restraints.
You can adjust the blower setting of AIR‐
#
SCARF vents 1 using the AIRSCARF button
( page 105).
/
You can adjust the height of AIRSCARF vents
#
1 and the current of air by adjusting the
height of the head restraints ( page 98).
/
Climate control 151