Using a small pry tool, gently press into the small indent near the front of the key fob while pressing up to pop off the battery cover.

Remove the coin-cell battery type CR2032 by prying upwards in the small recess

Insert a fresh CR2032 coin cell battery being sure to match the correct polarity of the original

If all you want to do is replace the battery, stop here. Otherwise check out my other guide for a full teardown!