Chevrolet 2011 Volt Owner's Manual page 300

8-8 Climate Controls
Rear Window Defogger
=
(Rear Window Defogger):
Press to turn the rear window
defogger on or off.
The rear window defogger
turns off automatically after about
five minutes. If turned on again,
it runs for about five minutes
before turning off. The defogger
can also be turned off by turning
the vehicle off.
For vehicles with heated outside
rearview mirrors, they turn on when
the rear window defogger button
is on and help to clear fog or frost
from the surface of the mirror.
See Heated Mirrors on page 2 16.
Do not try to clear frost
or other material from the inside
of the front windshield and rear
window with a razor blade or
anything else that is sharp.
This may damage the rear
window defogger grid and affect
the radio's ability to pick up
stations clearly. The repairs
wouldn't be covered by the
vehicle warranty.
Remote Start: For vehicles with
this feature, the climate control
system may be started by using
the Remote Keyless Entry (RKE)
transmitter. The climate control
system will default to an appropriate
heating or cooling mode.
See Remote Start on page 2 8.
The rear window defogger turns on
if it is cold outside.
I n f o r ma t i o n P r o v i d e d b y :
Compressor
The vehicle has an electric powered
air conditioning compressor.
This allows for continuous air
conditioning and/or high voltage
battery cooling operation, without
running the engine.
The compressor operating speed
is not tied to the engine speed, so
some noise may be heard from the
compressor, especially when air
conditioning use is high and the
engine has turned off. This is
normal.