The seat heaters and ventilators heat the seats and maintain
good airflow by blowing air from the seats.
Seat heaters Turns the seat heater on
The level indicator lights come on.
Press the " Seat ventilators ■ Seat heater Turns the seat heater on
The level indicator lights come on. Pressing the button changes modes in the following: Hi→Mid→Lo→Off ■ Seat ventilators Blows air from the seat
The level indicator lights come on. Pressing the button changes modes in the following: Hi→Mid→Lo→Off ■The seat heaters/seat ventilators can be used when The engine switch is in the "ON" position. ■Passenger seat ventilator timer (vehicles with seat ventilators)
■When not in use Turn the seat heaters or seat ventilators off by pressing the button. The indicator light turns off.
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Toyota Tundra Service Manual > Audio And Visual System: AV Signal Stoppage (Low Battery Voltage) (B158F)
DESCRIPTION This DTC is stored when a video or audio signal is interrupted due to battery voltage input to the radio and display receiver assembly dropping temporarily. DTC Code DTC Detection Condition Trouble Area B158F A video or audio signal is interrupted when the battery voltage drops. Radio an ...