Yes, you can use a 2032 battery in a key fob. Key fobs typically use CR2032 batteries, which are 3 volt lithium coin cells. The 2032 batteries are slightly larger in diameter than the CR2032 batteries, but they will still fit in the key fob's battery compartment.
If your key fob is not working properly, it could be due to a dead or dying battery. Replacing the battery is a relatively simple and inexpensive fix that you can do yourself. All you need is a new 2032 battery and a small screwdriver.
To replace the battery in your key fob:
1. Remove the screw from the back of the key fob using a small screwdriver.
2. Pry open the back of the key fob to access the battery compartment.
3. Remove the old CR2032 battery from the compartment and discard it safely.
4. Insert a new 2032 battery into the compartment, making sure that the positive side (the side with + sign) is facing up.
5 Replace the back cover of the key fob and secure it with the screw that you removed earlier