2009 Buick LaCrosse Key Fob Programming: Step-by-Step Guide for Easy Access

Having trouble with your 2009 Buick LaCrosse key fob? Whether you’ve lost a key, added a new driver to the family, or simply want a spare, programming a new key fob might seem daunting. Fortunately, for many 2009 Buick LaCrosse models, you can program a new key fob yourself right at home, saving you time and money compared to dealership programming. This comprehensive guide will walk you through the process of 2009 Buick Lacrosse Key Fob Programming, ensuring you regain seamless access to your vehicle.

This guide covers programming for both standard ignition keys and vehicles equipped with push-button start systems. It’s important to note that these procedures are designed to add keys, and they will not erase previously programmed keys. Before you begin, ensure that any new key to be programmed has been properly cut to match your vehicle’s ignition.

Programming a 2009 Buick LaCrosse Key Fob with a Working Key (Standard Ignition)

If you currently have a working, programmed key for your 2009 Buick LaCrosse, you can easily program additional keys by following these steps:

1. Start the Vehicle: Insert your existing, programmed key into the ignition and start the engine.
2. Turn Off and Remove Key: Once the engine is running, turn the ignition to the “off” position and remove the original key.
3. Insert New Key and Turn to “On”: Within 10 seconds of removing the original key, insert the new, unprogrammed key into the ignition. Turn the key to the “on” position, but do not start the engine.
4. Wait for Security Light: Keep the key in the “on” position and observe the security light on your dashboard. The security light should turn off once the new key is successfully programmed. If your vehicle does not have a security light, wait for approximately 10 minutes and 45 seconds to ensure the key programming process is complete.
5. Repeat for Additional Keys: If you need to program more keys, simply repeat steps 1 through 4 with each new key.

Programming a 2009 Buick LaCrosse Key Fob with Push Button Ignition

For 2009 Buick LaCrosse models with push-button ignition, the programming procedure varies depending on whether you have a working transmitter (key fob) or not.

Programming with at Least One Working Transmitter

If you have at least one functional key fob for your 2009 Buick LaCrosse, follow these steps to program additional transmitters:

1. Prepare for Programming: Ensure your vehicle is turned off. Gather all key fobs you intend to program, including the currently working ones and the new ones. Make sure the key blade for the new fob is cut correctly.
2. Place Working Transmitter: Put the recognized, working key fob into the cupholder of your Buick LaCrosse.
3. Use New Key in Door Lock: Insert the new, unprogrammed key into the physical lock cylinder located on the outside of the driver’s side door. Turn the key to the unlock position five times in rapid succession within 10 seconds. The Driver Information Center (DIC) display should show the message “Ready For Remote #2,3,4 or 5.”
4. Place New Transmitter in Pocket: Locate the transmitter pocket inside the center console storage area, underneath the cupholder. You might need to pull out the cupholder to access it. Place the new key fob into this transmitter pocket.
5. Press Ignition: Press the ignition button. Once the new transmitter is programmed, the DIC will indicate that it is ready for the next transmitter to be programmed.
6. Remove and Test: Take the newly programmed transmitter out of the pocket and press the unlock button to test if programming was successful.

To program more transmitters, repeat steps 4 through 6. Once you have programmed all desired key fobs, press and hold the ignition button for 5 seconds to exit the programming mode.

Programming Without Any Working Transmitters

If you have lost all your 2009 Buick LaCrosse key fobs, or do not have any working transmitters, this procedure is necessary. Be aware that this process takes approximately 30 minutes. It is also recommended to connect your vehicle to a power source, like jumper cables to another running vehicle, to prevent battery drain during the process.

1. Prepare for Programming: Ensure the vehicle is off and gather all new key fobs you wish to program. Confirm the key blades are correctly cut.
2. Use New Key in Door Lock: Insert the new key into the driver’s side door lock cylinder and turn it to the unlock position five times within 10 seconds. The DIC will display “Remote Learn Pending, Please Wait.”
3. Wait Ten Minutes (First Cycle): Wait for 10 minutes until the DIC message changes to “Press Engine Start Button To Learn.” Then, press the ignition button. The DIC will again show “Remote Learn Pending, Please Wait.”
4. Repeat Wait and Press (Second and Third Cycles): Repeat step 3 two more times. After the third cycle, any previously programmed transmitters will no longer function with your vehicle.
5. DIC Ready for Remote #1: The DIC should now display “Ready For Remote #1.”
6. Place New Transmitter in Pocket: Put the new key fob into the transmitter pocket in the center console, under the cupholder.
7. Press Ignition: Press the ignition button. When the transmitter is learned, the DIC will show that it is ready to program the next transmitter.
8. Remove and Test: Remove the transmitter from the pocket and press the unlock button to test.

To program additional transmitters, repeat steps 6 through 8. After programming all desired fobs, press and hold the ignition button for 5 seconds to exit programming mode.

Important Note: Your 2009 Buick LaCrosse can have up to five transmitters programmed to it. By following these instructions, you should be able to easily program your 2009 Buick LaCrosse key fob and regain full access to your vehicle’s convenience features.