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 > Engine Immobiliser System (w/o Smart Key System): Diagnosis System
DIAGNOSIS SYSTEM DESCRIPTION (a) The transponder key ECU assembly controls the engine immobiliser system. Engine immobiliser system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). CHECK DLC3 (a) Check the DLC3. Click here INSPECT BATTERY VOLTAGE ...