Lexus GS 450h2011 Manual page 252

3-1. Using the touch screen
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.
252
GS_HV_U (OM30C14U)
May 21, 2010 2:41 pm
Select time zone 
(with navigation system)
Daylight saving time on/off
Auto adjust clock on/off 
(with navigation system)
Manual clock setting