1997 Lexus LX 450 Owners Manual - Page 28

KEYS AND DOORS IGNITION SWITCH-ACTIVATED AUTOMATIC DOOR LOCK/UNLOCK For your convenience, your vehicle's doors will automatically lock when the key is inserted into the ignition switch and turned to "ON" or "START". They will unlock when the key is turned back to "LOCK" or "ACC". SIDE DOORS Locking with key Automatic door locking 1. Enter the vehicle and close all doors securely. 2. Insert the key into the ignition switch and turn it to "ON" or "START". All of the doors will automatically lock. This feature will not work while any door is open; all of the doors must be closed securely. "
Lock  Unlock Turn the key towards the front of the vehicle to lock and towards the back to unlock. All the side doors and back door lock and unlock simultaneously with either front door. In the driver's door lock, turning the key once will unlock the driver's door and twice in succession will unlock all the side doors and back door simultaneously. In the passenger's door lock, turning the key once will unlock all the side doors and back door simultaneously. Automatic door unlocking 1. Turn the key to "ACC" or "LOCK". The automatic unlock feature will not work if a door is unlocked and opened before the key has been turned back to "LOCK" or "ACC". The automatic unlocking feature will work only if the doors were automatically locked. Note: The Automatic door lock/unlock feature will operate only once (automatic lock, then automatic unlock) before a door is opened and closed again. 13