2016 Battery you need – https://amzn.to/3gKsY82
Here is a quick little demonstration video on how to change out your dead 2016 coin cell battery in your Peugeot. You will need a Philips and a flat blade screwdriver. Remove the back screw and then use the flat tip screwdriver to pry the two halves apart.
Peugeot 106 & 206
Peugeot 106 / 206 2 Button Remote Key Fob – S108231BN0
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2016 Battery you need – https://amzn.to/3gKsY82