Toyota Tundra 2005 Owner's Manual page 315

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The compass may not show the correct
direction in the following conditions:
A
The vehicle is stopped immediately af-
ter turning.
The compass does not adjust while the
vehicle is stopped.
A
The ignition switch is turned off imme-
diately after turning.
A
The vehicle is on an inclined surface.
A
The vehicle is in a place where the
earth's magnetic field is subject to in-
terference by artificial magnetic fields
(underground parking, under a steel
tower, between buildings, roof parking,
near a crossing, near a large vehicle,
etc.).
A
The vehicle is magnetized. (There is a
magnet or a metal object on or near
the roof.)
A
The battery has been disconnected.
The compass works to calibrate the direc-
tion automatically while the vehicle is in
motion, if deviation is small.
For additional precision or for complete
calibrating, see "CALIBRATING
COMPASS" below.
314
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'05 TUNDRA_U (L/O 0409)
If the direction is not indicated or the
system does not operate properly, contact
your Toyota dealer.
THE
Compass sensor
The compass sensor is on the inside of
the roof.
NOTICE
Do not put magnets or a metal object
on or near the roof of the vehicle.
Doing this may cause malfunction of
the compass sensor.
2005 TUNDRA from Sep. '04 Prod. (OM34432U)