1997 Lexus ES 300 User Guide 2 - Page 7

KEYS AND DOORS Locking with inside lock button ! CAUTION Before driving, make sure the doors are closed and locked, especially when small children are in the vehicle. Along with the proper use of seat belts, locking the doors helps prevent the driver and passengers from being thrown out from the vehicle during an accident. It also helps prevent the doors from being opened unintentionally. "
Lock  Unlock Locking with power door lock switch Push in the lock button to lock and unlock the door. When locked, the door cannot be opened with either the outside or inside door handle. Closing the door with the lock button pushed in will also lock the door. Be careful not to lock your keys in the vehicle. The door will not lock if the key is left in the ignition switch when closing the front doors. "
Lock  Unlock To lock all the doors simultaneously, push the power door lock switch on the front side. Pushing on the rear side will unlock them. The same switch is also equipped on the front passenger's side. 13