Toyota TACOMA 2010 Quick Reference Manual page 357

3-6. Other interior features
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Conditions unfavorable to correct operation
The compass may not show the correct direction in the following conditions:
●
The vehicle is stopped immediately after turning.
The compass does not adjust while the vehicle is stopped.
●
The engine switch is turned off immediately after turning.
●
The vehicle is on an inclined surface.
●
The vehicle is in a place where the earth's magnetic field is subject to
interference by artificial magnetic fields (underground car park/parking
lot, under a steel tower, between buildings, roof car park/parking lot, near
an intersection, near a large vehicle, etc.).
●
The vehicle has become magnetized.
(There is a magnet or metal object on or near the roof.)
●
The battery has been disconnected.
CAUTION
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While driving the vehicle
Do not adjust the display. Be sure to adjust the display only when the vehicle
is stopped.
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When doing the circling calibration
Be sure to secure a wide space, and watch out for people and vehicles in the
neighborhood. Do not violate any local traffic rules while performing circling
calibration.
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