Honda Ridgeline 2006 Online Reference Owner's Manual page 166

Compass
Compass Function
If equipped
Your vehicle has a compass in the
rear view mirror. The compass
indicates the vehicle direction with
illuminated letters; N (north), S
(south), W (west), and E (east). The
center blue icon in the compass is
always on. It serves as a reference
point.
166
REAR VIEW MIRROR
COMPASS
BUTTON
CENTER ICON
The direction and center position
icons come on when you turn the
ignition switch to the ON (II)
position. The system then begins to
check the vehicle direction and
illuminates the appropriate icon(s).
To turn the compass on or off, press
the compass button on the back of
the rear view mirror.
The compass can be affected by
driving near power lines or stations,
across bridges, through tunnels,
over railroad crossings, past large
vehicles, or driving near large
objects that cause magnetic
interference. It can also be affected
by accessories such as antennas and
roof racks that are mounted by
magnets.
The compass mirror has a light
sensor behind the right side of the
rear view mirror. Make sure the
extended sun visor or an accessory is
not covering the sensor.