Lexus GS 450h 2008 Owner's Manual page 514

5-2. Steps to take in an emergency
Other messages
If the following message is displayed, take appropriate action and confirm
that the message has disappeared.
Message
(If equipped)
Initializing the steering sensor
■
Use one of the following methods.
With the vehicle stopped, turn the steering wheel all the way to the left and right.
●
(The order is not important.)
Drive for more than 5 minute on an un-crowded road with as few curves and
●
corners as possible.
If the steering guide symbol disappears, the steering sensor has been initialized. If
the steering guide symbol does not disappear, have the vehicle checked by your
Lexus dealer.
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Calibrate the neutral position of the steering wheel.
Details