Toyota TACOMA 2010 Quick Reference Manual page 358

NOTICE
■
To avoid the compass malfunctions
Do not place magnets or any metal objects on or near the roof.
Doing this may cause a malfunction of the compass sensor.
■
To ensure normal operation of the compass
●
Do not perform circling calibration of the compass in a place where the
earth's magnetic field is subject to interference by artificial magnetic fields.
●
During calibration, do not operate electric systems (power windows, etc.)
as they may interfere with the calibration.
I n f o r ma t i o n P r o v i d e d b y :
3-6. Other interior features
3
341