HONDA 2008 Odyssey - Manual (Page 226)

The direction and quantity of airflow
from each rear ceiling vent is
adjustable.
To adjust the direction of air coming
from a rear ceiling vent, move the
tab in the center of each vent back-
and-forth, and rotate the vent with
the tab. The lever next to each vent
can be opened and closed to regulate
the amount of airflow.
The climate control system has three
sensors. A sunlight sensor is in the
top of the dashboard, and a
temperature sensor is next to the
steering column. There is also a rear
sensor on the rear sidewall near the
exhaust vent. Do not cover the
sensors or spill any liquid on them.
On EX, EX-L and Touring models
Sunlight and Temperature
Sensors Rear Ceiling Vents
Vents, Heating, and A/C, Climate Control Sensors
220
SUNLIGHT SENSOR
TEMPERATURE SENSOR
TAB
LEVER