2011 Toyota Highlander Owners Manual - Page 426

3-7. Other interior features n The power outlet can be used when 12 V Vehicles without smart key system: The engine switch is in the "ACC" or "ON" position. Vehicles with smart key system: The "POWER" switch is in ACCESSORY or ON mode. 120 VAC Vehicles without smart key system: The engine switch is in the "ON" position. Vehicles with smart key system: The "POWER" switch is in ON mode. 406