How to change the battery in a Peugeot/Citroen key fob (2-button)

Last updated on March 13th, 2021

When your car key battery starts to fail, your garage will be happy to offer to replace the battery for a fee. Mine quoted me ?25 (circa $30) for this insanely simple task? crazy!

I thought I?d do a quick guide for others who may be cautious of just diving in with a screwdriver!

I?ve demonstrated this on my Peugeot 206 key, though the same key is used on many Peugeot and Citro?n models

Peugeot models (106, 206, 306, 406 as well as the 107, 207, 307, 407? I believe)
Citro?n models (Xara Picasso, Saxo, Xantia, Berlingo?).

  • 1. Remove the single screw on the key fob with a cross head screwdriver
  • 2. Twist a flat headed screwdriver in the gap between the two halves of the fob (top end of the key)
  • 3. Pull the two halves of the key fob apart by hand
  • 4. Make a note of the way around the battery sits in its metal cradle. It is likely to have the positive terminal facing upwards
  • 5. Use a small screw driver to push the flat style battery out of its cradle (being careful not to damage the electronics in the process!)
  • 6. Replace the battery with a new one (I believe these all use a CR2016 battery), ensuring it is the same way around as the previous battery
  • 7. Push the two halves of the key back together until they “click” shut
  • 8. Replace the single screw to secure the two halves
  • 9. Test the key on the car… all should now be resolved!

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