Toyota SIENNA 2011 Quick Reference Manual page 434

3-1. Using the air conditioning system and defogger
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Temperature display
The temperature display (English/U.S. Customary System and metric units)
on the trip information display can be changed. (→P. 241)
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When the front air conditioning system is in simultaneous mode
"SYNC" is shown on the display. The rear air conditioning system controls
will continue to function. (→P. 354)
NOTICE
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To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is off.
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I n f o r ma t i o n P r o v i d e d b y :