Volvo XC90 Owner's Manual page 209

Climate control sensors
The climate system has a number of sensors to
help regulate the climate settings in the vehicle.
Location of the sensors
Sunlight sensors - on the upper side of the
dashboard.
Humidity sensor - in the rearview mirror con-
sole.
Ambient temperature sensor - in the right-
side door mirror.
Passenger compartment temperature sensor
- near the buttons in the center console.
NOTE
Do not cover or block the sensors with cloth-
ing or other objects.
On vehicles equipped with the Interior Air Quality
System*, there is also an air quality sensor in the
climate system's air intake.
Related information
• Climate (p. 206)
• Interior Air Quality System* (p. 210)
CLIMATE CONTROL
Perceived temperature
The climate control system regulates the climate
in the passenger compartment based on per-
ceived temperature, not actual temperature.
The selected passenger compartment tempera-
ture is based on the physical perception of the
current ambient temperature, airflow speed,
humidity, sunlight in the passenger compartment,
etc.
The system has a sunlight sensor that detects
which side of the vehicle the sunlight is shining
on and adjusts the temperature accordingly. This
means that the temperature of the air coming out
of the vents may be different for the left and right
sides, even if the temperature setting is the same
for both sides.
Related information
• Climate (p. 206)
207
* Option/accessory.