I had to change my battery in my remote, to remove them, just tug on the back of your key fob in between where the Chrysler logo is and where your key ring hooks on. However I could not find the right size, so I had to buy 2 separate sizes hat stacked up to about the same height as the factory ones. I believe the originals are 2 CR2025's however one CR2032 and one CR2016 will work just as well.