How to enter a Fiat Blaupunkt radio code

Fiat 500 from 2007 to 2015, Punto, Grande Punto, Doblo and Ducato, and the Alfa 147. The serial starts BP.
Type it and every step uses your own digits. It stays on this page.
Turn the ignition on and switch the radio on. It shows CODE for two seconds, then four dashes.
Every step
Checked against the Fiat 500 owner handbook.
If it locks
A wrong code starts a wait, and the wait grows each time: 1 minute, then 2, 4, 8, 16 and 30 minutes, then 1 hour and upward, to 24 hours at most. The display shows the time left. When it clears you can enter the code again. What each lockout screen means
Display says CAN CHECK?
That is the radio checking it is in its own car when you turn the key. It is not asking for the code. If it then shows CODE and four dashes, enter the code. If it starts playing, it has recognised its car and needs no code.



