Oldsmobile 1997 Aurora Owner's Manual page 109

2.
Hold in the CAL switch (on the bottom of the mirror
housing) for five seconds until the current zone entry
number appears on the display. To hold in the CAL
switch, insert a paper clip into the small hole on the
bottom of the mirror housing.
Repeatedly press the CAL switch until the number
for the new zone entry is displayed.
Once the desired zone number is displayed, stop
pressing the CAL switch and the display will show
compass direction within a few seconds.
Power Remote Control Mirror
The controls on the far left
of the instrument panel
control both outside
rearview mirrors. Move the
center switch to the left to
select the driver's side
rearview mirror, or to the
right to select the
passenger's side
rearview mirror.
Then press the arrows to adjust each mirror
so
that
you
can just see the side of your vehicle when you are sitting
in a comfortable driving position.
To lock the controls, leave the selector switch in the
middle position.
When you operate the rear window defogger, a defogger
also warms the driver's and passenger's outside
rearview mirrors to help clear them of ice and snow.
Parallel Park Assist Mirror
The passenger's outside rearview mirror also includes a
tilt-down feature that operates when the shift lever is in
reverse. This feature assists the driver with improved
rear obstacle detection.
Move the power remote control mirror switch to the
left (L) or center position to enable this feature. Move
the switch to the right (R) to turn this feature off.