2003 Buick Century Owner's Manual - Page 74

The ignition key is for the ignition only. The ignition and door keys don't have plugs. Your dealer or Buick Roadside Assistance has the code for your keys. If you need a new ignition or door key, contact your dealer who can obtain the correct key code. Also, see Roadside Assistance Program on page 7-5 for more information. 1 - Thedoorkey is for the Notice: Your vehicle has a number of features that can help prevent theft. You can have a lot of trouble getting into your vehicle if you ever lock your keys inside. You may even have to damage your vehicle to get in. So be sure you have spare keys. If your vehicle is equipped with the Onstar@system with an active subscription and you lock your keys inside the vehicle, Onstar@may be able to send a command to unlock your vehicle. See OnStaP System on page 2-35 for more information. 2-3