Peugeot 408 key battery
Every Peugeot 408 remote key we cover, 2022–2025, takes one CR2032.
P54
2022–2025- Smart keyCR2032
How to change a smart key battery
- Slide the release catch and pull out the emergency key blade.
- Wrap the tip of a small flat screwdriver in tape or a cloth, put it in the slot the blade leaves and twist gently to part the case. Keep it off the circuit board and contacts.
- Note which way up the old cell sits before you lift it out. It varies by key, so don't assume + is up.
- Fit a new CR2032 the same way up, holding it by the edges. Leave any grease on the contacts.
- Clip the case back together and test the buttons at the car. Most keys work straight away with no reprogramming.
- Keep new and old cells away from children. A swallowed button battery can cause serious injury within two hours.
For locksmiths · P54
- KeysSmart key
- Tools confirmed4
- Transponder chipSubscribers
- Programming procedureSubscribers
Questions
Peugeot 408 key battery questions
P54 (2022–2025): CR2032 in the smart key.