Unlock t reg peugeot car sterio

It's best to call your local Peugeot dealer.

Take the sterio out and look for a serial number then in your service manuel you would find the procedure on how to relearn.

Call the dealer and have the cars vin#,serial# and part#. Its safe to write down all the info and have it ready and they should be able to walk you through the procedure all over the phone. ive done this several times on honda, toyota, and gm cars and trucks. Make sure to make some notes in your manual for future reference you never know when you may need it again.