What battery for key fob?

[davidif]

I am away from the car/owners handbook at the moment, can anyone confirm the type of Battery required?

Thanks in advance.

 

[TonyHSD]

If you have the key fob with you and if it’s keyless entry style they are super easy to open using the build in mechanical key like a screwdriver and check the Battery you need.

Battery type CR1632

What he done with the knife you can do with the key blade instead. 
Very smart design. 👍

 

[davidif]

Brilliant, Thanks Tony.

[TonyHSD]

Been getting warnings for low key Battery for some time nowand I ordered some CR1632 from Amazon dispatched by Go green batteries and they arrived with expiry date 2032 👍🔋  

If anyone interested. 2 X Energizer Cr1632 3V Lthium Coin Cell Battery Dl1632 Car Keys Van Key Fob https://amzn.eu/d/0qJYte2 
 

[Mojo1010]

Sometimes a Battery of similar size I have found work too. For my fob I think its 2032, when I didnt have any spare I tried 2025 it worked, slightly thinner. 

[Cyker]

The cell in the Mk4's smartkey is a monster - CR2450!!  

Never had anything that needed a cell so big before!

[Eddie G]

3 hours ago, Mojo1010 said:

Sometimes a battery of similar size I have found work too. For my fob I think its 2032, when I didnt have any spare I tried 2025 it worked, slightly thinner. 

Also replaced mine with a CR2032 a few months ago works fine.

[TonyHSD]

17 minutes ago, Cyker said:

The cell in the Mk4's smartkey is a monster - CR2450!!  

Never had anything that needed a cell so big before!

Lol, what a size 🫢 probably been designed as a power bank for jump starter when 12v Battery goes flat 🪫🙂