Mercedes-Benz GLS Owner's Manual page 190

FAIL ¯ ¯ appears on the remote control dis‐
play
Possible cause:
There is a malfunction in the stationary
R
heater.
Have the stationary heater checked at a
#
qualified specialist workshop.
Air vents
Adjusting the front air vents
& WARNING Risk of burns and frostbite
due to being too close to the air vents
Very hot or very cold air can flow from the air
vents.
Make sure that all vehicle occupants
#
always maintain a sufficient distance
from the air vents.
If necessary, direct the airflow to
#
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 ventilation grilles
R
in the vehicle interior clear.
Keep the air inlet free of residue build-up
R
( page 374).
/
Optimum climate comfort is achieved with
R
the air vents in the centre position.
To open or close centre air vents: turn
#
controller 2 up or down as far as it will go.
Climate control 187
To open or close side air vents: turn con‐
#
troller 2 to the left or right as far as it will
go.
To adjust the air direction: hold air vent
#
in the centre and move it up or down or to
the left or right.
Adjusting the rear air vents
Air vents in the centre console
1