How to Open Your 1999 Buick LeSabre Key Fob & Change Battery

If your LeSabre key fob is not working properly, the battery most likely needs to be replaced. It's not difficult to change the battery in your remote key fob, and it’s easier than you think. All you need is described in this post.
What is the battery key fob use
Replacing battery in key fob require 1 CR2032 battery and flat head screwdriver. Prepare these materials and tools before opening and make sure to match the size of your fob’s batteries.- flat head screwdriver
- 1xCR2032 battery
Step by step instruction
A button battery installed in the your keyless entry remote. Carefully try to open your keyless entry remote with flat head screwdriver. Change 1xCR2032 battery with flat head screwdriver.
Change old battery with fresh one CR2032. Battery must be installed with the same polarity as was a previous. Your key fob will not work if you by mistake put battery wrong way.
Before assembling fob’s case, make sure that everything is functioning by testing buttons on circuit board.
The last thing to do is put your cover back on fob. Accurately try to put the pieces in place by hands from top to bottom. If your keyless entry remote case tightly closed, we done. If not, repeat the last step.
How to replace the battery video guide
How To Replace Buick Lesabre Key Fob Battery 1996 1997 1998 1999
Still not working? Buy new one