When I bought the vehicle, it was quite clear which of the two keys was used the most, even for a vehicle with keyless entry (KESSY). The buttons on one of the two remotes were slightly dented. I bought new buttons to replace the old ones on AliExpress.

Replacing them is straightforward. Begin by removing the battery cover. I then removed the metallic piece by taking out the screw and sliding it off. I did not have the Torx screwdriver in my main set, but I believe it was a T6. Using a plastic pry tool, I then took off the plastic side piece. Then simply remove the old buttons and install the new ones.

Putting it back together is the reverse process.

Before installation
Before installation
Installation 1
Installation 1
Installation 2
Installation 2
Installation 3
Installation 3
After installation
After installation

I compared the quality of the two buttons, and honestly, I have a hard time remembering which one was the replacement.

Comparing quality
Comparing quality