Brake lining wear means that the brake linings (pads) are worn.
Change the brake linings (pads) plenty of YouTube how-to videos to be found.
You'll obviously be checking the pads are actually worn and not it's an issue with the warning being triggered by faulty wiring. Check out all the posts in this thread:
https://howtomendit.com/answers?id=248487
Hufd, July 2022
