Mercedes-Benz CLA Operator's Manual page 128

Operating the climate control systems
126
dehumidified according to the temperature
selected.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a
malfunction.
Activating/deactivating
To activate: press the ¿ button.
X
The indicator lamp in the ¿ button lights
up.
To deactivate: press the ¿ button.
X
The indicator lamp in the ¿ button goes
out. The "Cooling with air dehumidification"
function has a delayed switch-off feature.