Lexus RX 450h 2014 Owner's Manual page 607

3-7. Other interior features
NOTICE
To prevent damage to the seat heaters/ventilators
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Do not put heavy objects that have an uneven surface on the seat and do not stick
sharp objects (needles, nails, etc.) into the seat.
To prevent 12-volt battery discharge
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Do not leave the system on longer than necessary when the hybrid system is off.
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