2010 Toyota Highlander Owners Manual - Page 86

1-2. Opening, closing and locking the doors n Key battery depletion Vehicles without smart key system The standard battery life is 1 to 2 years. (The battery becomes depleted even if the key is not used.) If the wireless remote control function does not operate, the battery may be depleted. Replace the battery when necessary. (→P. 472) Vehicles with smart key system →P. 473 n If the wireless remote control does not operate properly Vehicles without smart key system Locking and unlocking the doors: Use the key. (→P. 66) Vehicles with smart key system l Locking and unlocking the doors: Use the mechanical key. (→P. 539) l Starting the engine. (→P. 173) n Security feature If a door is not opened within approximately 60 seconds after the vehicle is unlocked, the security feature automatically locks the vehicle again. n Alarm Using the wireless remote control to lock the doors will set the alarm system. (→P. 122) 1 Before driving 57