A/C - On/Off; Recirculation; Interior Air Quality Sensor (Option) - Volvo XC90 2004 Owner's Manual

2004 VOLVO XC90

A/C - ON/OFF

Press the switch to turn the air conditioning on or off. The "ON" or "OFF" LED will light up to indicate if the system is
switched on or off. Other functions will still be regulated automatically (if the AUTO switch is on).
The air conditioning functions only at temperatures above 32° F (0° C).
While the Defroster function is selected, the air conditioning is temporarily activated to dehumidify the air, even if you
have manually switched the air conditioning off. This will only function if the blower is not switched off.

Recirculation

Press this switch to engage the recirculation function (air in the passenger compartment recirculates - no fresh air enters the
compartment). The LED in the switch will light up to indicate that the function is engaged.
Use this function if the outside air is contaminated with exhaust gases, smoke, etc or to heat/cool the vehicle quickly.
Recirculation should not be used for more than 15 minutes. If your windows begin to fog or mist, make sure that the
recirculation function is switched off.
Selecting Defroster automatically switches recirculation off.
Timer mode activation: (Vehicles equipped with the Interior Air Quality System have no timer mode) Press and hold
the recirculation button for at least 3 seconds to activate a recirculation timer mode. The amber LED in the recirculation
button will flash 5 times to show that the timer mode is being activated. In timer mode, each time the recirculation button is
pressed, the climate control system will recirculate the air in the passenger compartment for 5-12 minutes, depending on the
outside air temperature, and then revert back to fresh air.
Timer mode deactivation: Press and hold the recirculation button for 3 seconds. The amber LED in the recirculation
button will illuminate steadily for 5 seconds to show a return to "normal" mode.
pg. 51 Climate control
In normal mode, when the recirculation button is pressed, the climate control system will recirculate the air in the
passenger compartment until the recirculation button is pressed again.
Timer mode memory: If the vehicle is turned off while timer mode is active, timer mode will still be active when the
vehicle is restarted.

Interior Air Quality sensor (option)

Some vehicles are equipped with a multifilter and Air Quality sensor. The filter separates gases and particles, thereby
reducing the amounts of odors and contaminants entering the vehicle. The Air Quality sensor detects increased levels of
contaminants in the outside air. When the Air Quality sensor detects contaminated outside air, the air intake closes and the
air inside the passenger compartment is recirculated, i.e. no outside air enters the vehicle. The filter also cleans recirculated
passenger compartment air. When the ECC system is in the AUTO mode, the green LED will be on
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