Just a suggestion have you had a look on French car forum there are a lot of users on there of lexia diagnostic kit that may be able to help.
Are we there yet????? No we fecking ain`t gggggrrrrrrr
Ex 1.6hdi van now 3 seater 1.4 multispace
To program a new key, you will need the transponder code, this will be on the Key code card that you may have received with your car. If not , then PSA can supply it at a cost.
Once you have this code , you can gain access to programming the BSI on Lexia or Diagbox .
Do a global test , and then go into the BSI section. Open this up and you will see "learning" at the bottom of the menus, click this & "key programming " is in this section. The program will then ask you for the "access code". You enter this twice, and if it's correct, you then enter the number of keys to be programmed. ALL keys must be done at this time, any that are not programmed will not work again after this.
The program explains what to do, it's a simple process of switching the ignition on & off, follow it exactly & you will be told how to program the remote locking in after.
Second hand keys from other cars cannot be used.
I see, you put the thread in the wrong section. You can't do much to a B9 with Lexia, you need Diagbox !