Lexus GS460 Owner's Manual page 239

Clock settings
Touch "Clock" on the "Setup" screen.
Manual adjustment
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The minutes and hours can be adjusted manually when auto adjust clock is set to off.
GS_G_U (OM30C11U)
May 21, 2010 1:06 pm
3-1. Using the touch screen
Select time zone 
(with navigation system)
Daylight saving time on/off
Auto adjust clock on/off
(with navigation system)
Manual clock setting
3
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