Has your remote keyless entry (FOB) stopped responding? You may need to change the battery. This is a quick post with instructions and pictures on replacing the battery in a Toyota key FOB remote, including the part number of the required battery.

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What Battery Fits a Toyota Key FOB?

Most Toyota key FOBS use the CR2032 battery. This is a 3v battery and the numbers refer to the size specifications of the battery the “20” indicates that the diameter of the battery is 20mm, and the “32” indicates the battery thickness of 3.2mm.

You can also check your car’s owner’s manual, or just take the FOB apart as described below, and check the part number on the existing battery.

What you’ll need:

How do you change the battery in a Toyota keyless remote?

  1. Take your key FOB and locate the prying notch at its base.
  2. Use a flat-bladed screwdriver to gently pry the two plastic halves apart.
  3. Slide the old battery out of the slot and slide in the new battery.
  4. Line up the 2 halves of the FOB and press them together until they click.

This battery replacement is very easy and takes about a minute or so if you have the new battery ready to go.

I’m not sure how much different these types of batteries are, but I’ve always had good luck with the Panasonic CR2032 batteries. The last one I used lasted over 4 years of pretty much daily use.

How to Replace a Broken Key FOB?

If you discover you need to replace the entire FOB, they actually aren’t that expensive, and you can even program it yourself as long as you have a working key. See this one for example for a Toyota Corolla:

Toyota Key FOB (GQ43VT14T)

If you have a different vehicle, you can search for your vehicle’s replacement FOB here:

Keyless Entry FOB Search on Amazon

Click on the link above, then click “Filter Vehicle” and enter you vehicle information. A list of compatible key FOBs will come up.