Lexus LS460 2011 Owner's Manual page 435

3-2. Using the air conditioning system and defogger

Button lock function

Rear control panel illumination off function

Replacing the rear air conditioning filter
Replacing the air conditioning filter when using rear air conditioning or air
purifier reduces air flow or deodorizing performance. (P. 656)
NOTICE

To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is off.
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LS460_EE
To prevent inadvertent operation, the but-
tons on the rear armrest can be locked.
Press "MODE" until you hear a beep to
lock the buttons. Pressing "MODE"
again until you hear a beep will release
the lock.
The indicator appears on the display
when the buttons are locked
Control panel illumination on the rear
armrest can be turned off. Press "2" until
you hear a beep to turn the illumination
off. Pressing "2" again until you hear a
beep will turn the illumination on.