Volvo XC90 Owner's Manual page 103

Operation
Press to operate the air quality sensor (normal
setting).
or:
Select one of the following three functions by
pressing 1, 2 or 3 times.
1. The AUT LED lights. The air quality sensor
is now activated.
2. No LED lights. Recirculation is not acti-
vated unless needed to cool the passenger
compartment in a warm climate.
3. The MAN LED lights. Recirculation is now
activated.
Keep in mind the following:
•
Make it a rule to have the air quality sensor
activated at all times.
•
Recirculation is limited in cold climates to
avoid fogging.
•
If window fogging occurs, you should
deactivate the air quality sensor. Also use
the defroster functions for the windshield,
side windows and rear window, see
page 98.
•
The filter should be changed at the inter-
vals recommended in the service sched-
ule. However, if the vehicle is used in a
severely contaminated environment, it may
be necessary to change the filter more fre-
quently.
03 Climate
Electronic climate control (ECC)
03
101