2005 Buick Century Keyless Entry Remote Fob

Important: Before beginning the process, ensure you have all remote fobs you intend to use with the vehicle. Once programming mode is activated, any remotes not programmed during the session will be erased and must be reprogrammed to function again.

Step-by-Step Programming Procedure:

• Step 1: Confirm all vehicle doors are closed securely.
• Step 2: Insert the key into the ignition and turn it to the ON position (do not start the engine).
• Step 3: Turn the key to the OFF position and remove it from the ignition.
• Step 4: Press and hold the UNLOCK button located on the driver-side door panel.
• Step 5: While holding the unlock button, insert the ignition key into the cylinder and remove it without turning.
• Step 6: Repeat the previous step a second time—insert and remove the ignition key again without turning.
• Step 7: Insert the ignition key into the cylinder a third time and leave it in place without turning.
• Step 8: Release the UNLOCK button. You should hear three audible chimes, indicating that the vehicle has entered programming mode.
• Step 9: Take the first remote and press the LOCK and UNLOCK buttons simultaneously.
• Step 10: Continue holding both buttons for approximately 15 seconds until the vehicle beeps twice, confirming successful programming.
• Step 11: Repeat Steps 9 and 10 for any additional remotes, up to a total of four.
• Step 12: Once all remotes are programmed, remove the key from the ignition to exit programming mode.
• Step 13: Test each remote by pressing LOCK and UNLOCK to ensure proper operation.
• Step 14: Check that other remote functions, such as trunk release or panic, are working as expected.
• Step 15: Safely store all remotes and note which ones were programmed for future reference.