Mercury 2005 Mariner Owner's Manual page 366

Driver Controls
Heated outside mirrors (if equipped)
Both mirrors are heated
automatically to remove ice, mist
and fog when the rear window
defrost is activated.
Do not remove ice from the
mirrors with a scraper or
attempt to readjust the mirror
glass if it is frozen in place.
These actions could cause
damage to the glass and mirrors.
Automatic dimming rear view mirror (if equipped)
Your vehicle may be equipped with
an inside rear view mirror with an
auto-dimming feature. When the
auto-dimming mirror is turned on,
as indicated by an illuminated green
LED to the left of the button on
mirror, it will detect bright lights
(glare) from behind the vehicle, and will change from the normal, high
reflective state, to the darkened state to minimize glare.
When the auto-dimming mirror is turned on, it will automatically return
to the normal, high reflective, state whenever the vehicle is placed in R
(Reverse) to ensure a clear view while backing up.
Do not block the sensor located to the right of the mirror button or the
sensor located on the back side of the mirror as this may impair mirror
performance.
ELECTRONIC COMPASS
The compass heading is displayed as one of N, NE, E, SE, S, SW, W and
NW in the message center display.
The compass reading may be affected when you drive near large
buildings, bridges, power lines and powerful broadcast antenna. Magnetic
or metallic objects placed in, on or near the vehicle may also affect
compass accuracy.
Usually, when something affects the compass readings, the compass will
correct itself after a few days of operating your vehicle in normal
conditions. If the compass still appears to be inaccurate, a manual
calibration may be necessary. Refer to Compass zone adjustment.
58
2005 Mercury Mariner (mrn)
Owners Guide (post-2002-fmt)
USA_English (fus)