Acura 2008 RL - Manual (Page 152)

The rear window defogger clears fog,
frost, and thin ice from the window.
Push the defogger button to turn it
on and off. Pushing this button also
turns the mirror heaters on and off.
The indicator in the button comes on
to show the defogger is on. If you do
not turn it off, the defogger will shut
itself off after 5 to 40 minutes
(depending on the ambient
temperature). It also shuts off when
you turn off the ignition switch. You
have to turn it on again when you
restart the vehicle.
Make sure the rear window is clear
and you have good visibility before
starting to drive.
The defogger and antenna wires on
the inside of the rear window can be
accidentally damaged. When
cleaning the glass, always wipe side
to side.
To reduce glare at night, the
instrument panel illumination dims
when you turn the light switch to
or . To cancel the glare
reduction function, set the
brightness to the highest level, then
press the
button. You will hear a
beep when it is canceled.
Rear Window Def ogger
Instrument Panel Brightness, Rear Window Defogger
146
REAR WINDOW DEFOGGER BUTTON