2. Housing with false key compliant and identical to the original, easy to open to house the battery and circuit board (just a little bit of lime to uncle to adjustment) and voila.
3. The replacement of the key (the orinale part for operation) was carried out without problems by removing the small pin with care: not need instruction as we handyman !!!! So no need to remove the spring !!!!
4. Once the clipping with the lid of the box, my plip foctionne like the first day.
Conclusion: the cost of this very quick change allowed me to save money (about 130 Euros PSA).