Is your 2003 Buick Century Key Fob no longer working? Don’t worry, programming a new or existing key fob for your vehicle can often be done right at home. This guide provides you with straightforward, step-by-step instructions to program your 2003 Buick Century keyless entry remote. Before you begin, it’s crucial to gather all the key fobs you intend to use with your car, as the programming process will erase all previous codes.
What You Need To Know Before Programming
It’s important to understand that when you enter programming mode for your 2003 Buick Century, the system will clear its memory of all previously programmed key fobs. This means you must program all of your remotes, even the ones that were working before, during this single programming session. Make sure you have every key fob you plan to use in hand before you start this process.
Step-by-Step Programming Instructions
Follow these steps carefully to program your 2003 Buick Century key fob:
- Ensure all vehicle doors are fully closed.
- Insert your key into the ignition switch and turn it to the “ON” position. This is the position just before you would crank the engine to start.
- Turn the ignition switch to the “OFF” position and remove the key from the ignition.
- Press and maintain pressure on the driver’s side door lock switch in the “UNLOCK” position. Keep holding it down.
- Insert the ignition key into the ignition lock cylinder, and then immediately remove it. Do not turn the key at any point during this step.
- Repeat step 5 – insert the ignition key into the ignition lock cylinder and immediately remove it again.
- Insert the ignition key into the ignition lock cylinder for a third time, but this time, leave the key in the ignition. Do not turn the key.
- Release the door lock switch. You should hear three audible beeps from your Buick Century. These beeps confirm that your vehicle has successfully entered the key fob programming mode.
- Take the key fob you wish to program. Press and hold both the “LOCK” and “UNLOCK” buttons simultaneously. Continue holding these buttons until you hear two beeps from the vehicle. This usually takes around 15 seconds. The two beeps indicate that the key fob has been successfully programmed.
- If you have additional key fobs to program, repeat step 9 for each one. You can program up to four key fobs in total, including any previously working remotes.
- Once you have programmed all your desired key fobs, remove the ignition key from the ignition to exit the programming mode.
Need an Ignition Key Programmed?
Please note that these instructions are specifically for programming the keyless entry remote fob. If you need to program a new ignition key, especially one with a transponder chip, the process may be different and often requires specialized equipment. For programming of ignition keys for your 2003 Buick Century, you may need to consult a professional locksmith or dealership. You can also find resources online, such as ProgramAutoKeys.com, which may offer further guidance on ignition key programming.
By following these steps, you should be able to easily program your 2003 Buick Century key fob and regain the convenience of keyless entry.
