Buick CENTURY 1997 Manual page 82

Rear Door Security Locks Your Buick is equipped with rear door security locks that
help prevent passengers
from
opening the rear doors of
your vehicle from the inside. To use one of these locks:
1. Open one of the rear doors.
2. On the inside of the rear door will be a lock. Insert
your key into this lock and rotate it upward. This will
engage the safety lock.
3. Close the door.
4. Do the same thing to the other rear door lock.
The rear doors
of
your vehicle cannot be opened from
the inside when this feature is in use. If you want to
open the rear door when the security lock is on, unlock
the door from the inside and then open the door from
the outside.
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