You can renew the Peugeot 1007 key-fob battery at home — split the fob, swap the coin cell for a fresh one of the same type, and reassemble. Programming a spare or replacement remote, however, is not an owner job on the 2005–2011 1007: it needs the car's confidential security PIN and a PSA diagnostic tool (Lexia/PP2000), so it is done by a Peugeot dealer or an auto-locksmith.
Overview
The 1007's remote both unlocks the car and carries the transponder the immobiliser reads to allow starting. A flat fob battery only affects the remote-locking range, not starting (the transponder is passive), so a battery swap is a simple fix. Adding or replacing a remote is a security operation: PSA cars of this era require the four-digit confidential code and a diagnostic tool to marry a new key to the immobiliser, which is why it cannot be done from the driver's seat.
Applies to
2005–2011 Peugeot 1007. The exact coin-cell type varies by fob version — always match the number printed on the old cell.
What you’ll need
- A replacement CR-type coin cell (match the number on the old one)
- A small flat tool to split the fob case
- For programming: a dealer/locksmith with the security PIN and a PSA diagnostic tool (not an owner task)
Step-by-step
- Get the right coin cell — Open the fob to identify the cell (a CR-type lithium coin cell) and buy an identical replacement. Note the exact number printed on the old cell before shopping.
- Open the fob — Release the emergency blade and split the two halves of the case at the seam with a small flat tool, taking care not to mark the case or lose the buttons.
- Swap the battery — Lift out the old cell, avoid touching the new cell's faces with bare fingers, and fit it the same way up (polarity as marked).
- Reassemble and test — Clip the case back together, refit the blade, and check the remote locks and unlocks the car within normal range.
- Need a new remote programmed? See a dealer or locksmith — To program a spare or replacement remote, take the car and proof of ownership to a Peugeot dealer or an auto-locksmith; they use the confidential PIN and a PSA diagnostic tool (Lexia/PP2000) to code it to the immobiliser.
Important
- A flat fob battery stops the remote locking/unlocking but does not stop the car starting — the transponder is passive, so you can still start the car with the key.
- Do not expect a self-programming in-car sequence for a new remote on this car — the 1007 needs the confidential PIN and a diagnostic tool, which only a dealer or locksmith has.
- Handle lithium coin cells carefully and keep them away from children and pets.
FAQ
What battery does the Peugeot 1007 key fob take?
A CR-type lithium coin cell — open the fob and match the number printed on the old cell exactly, as it varies by fob version.
Can I program a new Peugeot 1007 remote myself?
No. On the 2005–2011 1007, adding or replacing a remote needs the car's confidential security PIN and a PSA diagnostic tool (Lexia/PP2000), so it must be done by a Peugeot dealer or an auto-locksmith.
My remote stopped working after the battery change — why?
Check the cell is the correct type and fitted the right way up, and that the case is fully closed. If the buttons still do nothing, the remote may simply be out of sync or faulty; a dealer/locksmith can re-sync or replace it.
Will the car still start with a dead fob battery?
Yes. The immobiliser reads the passive transponder in the key, which needs no battery, so a flat fob only affects remote locking — you can still start the car normally.