Mercedes-Benz GLS Owner's Manual page 192

Opening or closing the air vent in the glove
box
* NOTE Damage to temperature-sensitive
objects in the glove box
Temperature-sensitive objects stored in the
glove box may be damaged by the air vent
located inside the glove compartment.
Close the air vent when you heat the
#
vehicle.
At high outside temperatures, open the
#
air vent and switch on the A/C func‐
tion.
The automatic climate control must be switched
on to cool the glove box. To open or close: turn controller
#
vent 2 clockwise or anticlockwise.
1 of air
Climate control 189