Lexus IS F 2012 Owner's Manual page 367

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Circling calibration
Conditions unfavorable to correct operation
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The compass may not show the correct direction in the following conditions:
The vehicle is stopped 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 interfer-
●
ence 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.
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(There is a magnet or metal object near the inside rear view mirror.)
The battery has been disconnected.
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A door is open.
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3-7. Other interior features
When "C" appears on the dis-
play, drive the vehicle at 5 mph
(8 km/h) or less in a circle until a
direction is displayed.
If there is not enough space to
drive in a circle, drive around the
block until the direction is dis-
played.
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