Once you open the key fob look at the battery inside the remote it will usually have numbers printed on it such as 2032 or 2025 or 2016. Make sure to determine which side the battery must face, + side up or down.5 Oct 2018
What is the most common key fob battery?
The most common car key fob battery is the ubiquitous CR2032 battery. The “CR” before the numbers stands for two things. First, the “C” is for Lithium. The “R” is for round, the shape of the battery.