Toyota TUNDRA Manual page 428

428
6-1. Using the air conditioning system
NOTICE
■
To prevent damage to the seat heaters/seat ventilators
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 battery discharge
Turn the seat heaters/seat ventilators off when the engine is not running.