Fiat Key Fob Battery Replacement
Can’t unlock or lock your Fiat due to a dead key fob battery? Learn how to fix the problem by replacing your Fiat key fob battery.
At a Glance
- Battery: one CR2032 coin cell.
- Tool: a small flat screwdriver; the swap takes a few minutes.
- Flip the key blade out, unlock and pull out the battery holder.
- Fit the new cell with the + side facing the same way as the old one.
- No reprogramming is usually needed after a battery change.
Video: Fiat Key Fob Battery Replacement
You will need a CR2032 battery and a flathead screwdriver to change the battery on this Fiat key fob.
Instructions
- Flip open the metal key.
- Use a flathead screwdriver to unlock the battery holder. The arrow needs to point out the metal key.
- Pry out the battery holder.
- Remove the battery from the holder.
- Insert the new battery in the battery holder. Fit it with the + side facing the same way as the old battery.
- Insert the back of the battery holder in the key fob, then press the rest.
- Lock the battery holder by twisting the lock.
Signs Your Fiat Key Fob Battery Is Dying
- You have to stand closer to the car for the buttons to work
- Buttons work only after several presses
- A key battery warning on the instrument cluster, on models that have one
- The fob works one day and not the next, especially in cold weather
If the Fob Still Does Not Work
Check that the new battery is a fresh CR2032 and is fitted with the + side facing the same way as the old one. Clean the battery contacts with a dry cloth. If it still does not work, try your spare fob: if the spare works, the first fob may be damaged; if neither works, the problem may be in the car’s receiver.
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Frequently Asked Questions
What battery does a Fiat key fob take?
One CR2032 coin cell battery, available at most stores.
Do I need to reprogram my Fiat key after changing the battery?
Usually no. The fob keeps its programming when the battery is changed.
Can I start my Fiat with a dead key fob battery?
On cars with a traditional key, yes, use the metal key blade. The battery only powers the remote buttons.
Check these troubleshooting and repair guides for more help on your Fiat.

