Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Replace the Key Remote of a Car

Model: Buick Lacrosse MK 3 - Years: 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
Part: Key

See other generations:
Video tutorial

Although the video refers to a General Motors vehicle, the principle applies to all cars with a retractable key. Be careful not to damage the components. Obtain the new remote housing for your car: you can find the suitable one online.

Start by disassembling the old remote; remove the spring and the key button, observe the position of the electronic chip, remove the rear battery cover, and take out the battery. Be very careful not to damage the electronic chip and place it in the front half (the one with the rubber buttons) of the new remote; it should snap into place on plastic tabs.

Take the back part of the new remote and insert the spring into its designated slot, ensuring the spring tab fits into the corresponding groove. Place your key over the button, aligning it with the notches.

Hold the key/spring assembly in position and rotate it counterclockwise two turns. This will wind the spring, allowing the key to pop out automatically when the button is pressed.

While maintaining tension, align the key with the housing and join the two halves of the remote. Press firmly until the two halves snap together.

Test the functionality of the remote and try the key's opening and closing mechanism.


Posted on 15 March 2026 by ScegliAuto


Related tutorials

How to Replace the Key Fob Battery in a Buick Lacrosse
How to Replace the Key Fob Battery in a Buick Lacrosse
Buick Lacrosse (2010-2016 / MK 2) Replacing the battery in the key fob of a Buick Lacrosse is a really simple task. Before proceeding, make sure you have the correct battery model, wh…
How to Replace the Remote Battery in a Buick LaCrosse?
How to Replace the Remote Battery in a Buick LaCrosse?
Buick Lacrosse (2017-2024 / MK 3) In this tutorial, you will see how to replace the remote battery in a Buick LaCrosse, a very simple and inexpensive operation. You won’t need any spe…
How to Replace the Key Battery of the Buick LaCrosse
How to Replace the Key Battery of the Buick LaCrosse
Buick Lacrosse (2005-2009 / MK 1) If you own a Buick LaCrosse Mk1 and your car key has suddenly stopped working, don’t worry because this guide will provide all the necessary steps to…

Other guides you may be interested in

How to Open the Bonnet of a Toyota C-HR

To open the bonnet of a Toyota C-HR, get inside the vehicle and lift the lever with the bonnet symbol located under the steering wheel. After lifting the lever, you will notice that the bonnet rises a few centimetres. Position yourself in front of the bonnet, insert your hand into the gap, and move the small internal lever from right to left, then lift the bonnet. You can keep the bonnet open during maintenance by positioning it on the support rod. To close the bonnet, remove the support rod and let it drop back down.

Watch the video!


by ScegliAuto

More videos