Lexus LS 600h L 2012 Owner's Manual page 300

Initializing the system
The help screen appears when "?" is touched. Make a correction using
the following method in accordance with the display.
When the vehicle is stopped, turn the steering wheel all the way to the
left, then all the way to the right. (It does not matter in which direction 
right or left  you turn first.)
When the screen returns to the original display, correction is complete.
If the above screen remains, have the vehicle inspected at your Lexus
dealer.
2-4. Using other driving systems
Make sure to initialize the system
in the following situations.
● The 12-volt battery is discon-
nected and reconnected.
● The system initialization in
progress screen is displayed
when the shift lever is moved to
"R" position (due to low battery
etc.).
2
297