Honda Pilot Owner's Manual page 205

When you set the temperature to its
lower limit ( ) or its upper limit
( ), the system runs at full
cooling or heating only. It does not
regulate the interior temperature.
When you press a fan control button,
the fan is taken out of AUTO mode.
On vehicles with navigation system
In the Auto mode, the vehicle's
interior temperature is
independently regulated for the
driver, front passenger, and rear
passengers according to each
adjusted temperature. The system
also regulates each temperature
based on the information of the
sunlight sensor and the sun's
position which is updated
automatically by the navigation's
global positioning system (GPS). For
example, if the driver's side of the
vehicle is getting too much sun, the
system will adjust to a lower
temperature.
2011 Pilot
Climate Control System
RR (Rear) Lock Button
When you turn the ignition switch to
the ON (II) position, the temperature
of the rear passenger compartment
is synchronized to the driver's side
set temperature. You will see SYNC
on the system display of the rear
control panel. Changing the
temperature of the rear passenger
compartment takes the system out
of synchronized mode. This causes
the word SYNC in the display to go
out and displays the rear
temperature in the front display.
When you turn the ignition switch to
the ON (II) position and see LOCK
on the system display of the front
and rear control panels, the
temperature of the rear passenger
compartment is not synchronized to
the driver's side set temperature.
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