These instructions apply to the Alfa Romeo MiTo Mk1 (955) 2008-2019. For other models, please choose your vehicle here.
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If the key fob on your Alfa Romeo MiTo (2008–2019) has lost its range or the central locking has gone intermittent, the coin cell inside the fob is almost certainly flat. It’s a quick swap with a CR2032.
Battery First — What You Need
- A CR2032 coin cell.
- A small flat screwdriver.
The MiTo’s flip key still turns the ignition mechanically even with a dead fob, so you can always get in and start it; the cell only powers the remote locking.
Replacing the Cell
- Flip out the metal key blade.
- Press button A and remove screw B to split the fob case (as shown in the fob).
- Lift out the old cell (don’t touch the terminals).
- Fit a new CR2032, observing the correct polarity.
- Reassemble, refit the screw and close the blade.
Lost Key or Adding a Spare
A cell swap keeps the existing coding. The MiTo can hold up to 8 keys, but a lost or broken key can only be ordered and coded by an Alfa Romeo dealer — there’s no owner programming sequence.
If a Fresh Cell Doesn’t Help
- Check the polarity — an upside-down cell won’t work.
- Use the key blade to lock/unlock in the meantime.
- Still intermittent? A receiver fault can store a code — look it up on autodtcs.com.
Frequently Asked Questions
What battery does the Alfa Romeo MiTo key use?
A single CR2032 coin cell.
Do I need to reprogram the key after the swap?
No — the coding is retained for a battery change.
Can I program a new MiTo key myself?
No — a replacement key must be ordered and coded by an Alfa Romeo dealer.
The fob is dead — can I still drive?
Yes — the metal blade unlocks the door and turns the ignition.
If the fob stopped working after a battery disconnection, see our MiTo battery disconnect/reconnect guide.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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