Description

to purchase Auto Keys, Fobs, Remotes, Shell/Cases & Related products for 1999 Buick Century

Step-by-Step Programming Instructions:

**IMPORTANT:** Before entering programming mode, ensure you have all the remotes you will use on the vehicle. Once programmed, all previous codes will be erased. Other remotes won’t function until reprogrammed.

1. Close vehicle doors.
2. Insert the key into the ignition and turn it to ON (without starting the engine).
3. Turn ignition OFF and remove the key.
4. Press and hold the driver’s side door lock switch in the UNLOCK position.
5. Insert the ignition key into the lock cylinder, then remove it (without turning).
6. Repeat step 5 twice.
7. Insert the ignition key into the lock cylinder (without turning) and leave it there.
8. Release the door lock switch; the vehicle will beep three times to confirm Program Mode activation.
9. Press and hold the LOCK and UNLOCK buttons together on the keyless entry transmitter until the vehicle beeps twice (takes about 15 seconds).
10. Repeat the previous step for up to four transmitters, including old ones.
11. Remove the ignition key to exit Program Mode.

If you encounter issues with the initial set of instructions, try these steps:
1. Sit in the driver’s seat.
2. Remove the ignition key.
3. Close all doors.
4. Press and hold the unlock button on the door lock switch.
5. While holding the switch, insert and remove the ignition key twice (do not turn).
6. Insert the ignition key a third time without turning and leave it there.
7. Release the door lock switch; you’ll hear three chimes indicating transmitter programming is active.
8. Press and hold both the lock and unlock buttons on the keyless entry remote simultaneously for 12 seconds; you’ll hear two chimes confirming programming.
9. Repeat step 8 for each additional transmitter.
10. Exit programming by removing the key from the ignition cylinder.

to purchase Auto Keys, Fobs, Remotes, Shell/Cases & Related products for 1999 Buick Century