Buick 2011 Lucerne Owner's Manual page 175

If the vehicle has heated outside rearview mirrors, the
mirrors heat to help clear fog or frost from the surface of
the mirror when the rear window defogger is on. See
Outside Heated Mirrors on page 3 32 for more
information.
The heating, cooling, and ventilation for the vehicle can
be controlled with this system.
For vehicles with the remote start feature and it is
activated, the climate control system heats or cools the
inside of the vehicle, with the settings used before the
vehicle was turned off. The heated seats, if the vehicle
has them, and the rear window defogger will be turned
on by the climate control system when it is cold outside.
The cooled seat setting is not activated during a remote
start. Normal operation of the system will return after
the key is turned to the ON/RUN position. See Remote
Keyless Entry (RKE) System Operation on page 3 4
for more information.
A. Driver and E. Air Conditioning
Passenger
F. Outside Air
Temperature
G. Recirculation
Controls
H. PASS
B. Fan Control
I. Rear Window
C. Display
Defogger
D. Air Delivery
Mode
Control
4-19