1998 Toyota 4Runner Owners Manual - Page 9
1998 Toyota 4Runner Manual
Page 9 highlights
4RUNNER (1998) KEY NUMBER PLATE Your key number is shown on the plate. Keep the plate in a safe place such as your wallet, not in the vehicle. If you should lose your keys or if you need additional keys, duplicates can be made by a Toyota dealer using the key number. You should also put a copy of the key number with your important papers. Side doors