1997 Buick Century Owner's Manual - Page 80

Door Locks Unlocked doors can be dangerous. Passengers especially children can easily open the doors and fall out. When adoor is locked, the inside handle won't open it. Outsiders can easilyenter through an unlocked door when you slow down stop your vehicle. or This may not be so obvious: You increase the chance of being thrown out of the vehicle in a crash if the doors aren't locked. Wear safety belts properly, lock yourdoors, and you will be far better off whenever you drive your vehicle. -- -- From the inside, to lock or unlock the door manually, push the lever forward to lock the door. To unlock, push the lever rearward. There areseveral ways to lock and unlock your vehicle. From the outside, useyour door key or remote keyless entry transmitter. 2-4