Problem:

Tried to add a smart key to a Peugeot 2019 5008, the original pcb A3M05, the new key pcb same oem A3M05, PCB all layout same, 2nd key remote work ok! But keyless start not work! Xhorse XZPG00EN PSA smart key keyless doesn’t work, remote work, and start near ignition coil work. Any solution?

Solution:

Xhorse XZPG00EN is the special remote for some PSA 4A system models only.

Use Xhorse XM38 instead. 

Xm38 Xhorse remotes work pretty consistently with these.

I added a key using the Xhorse XM38, and it works perfectly on a Peugeot 3008.