Fiat cars use CODEII second-generation anti-theft system, and the key is encrypted 48 chips, which is rare in cars below 10W. It can be solved by Fiat AK-47 matching instrument, but the BLC66 chip (anti-theft data chip) on the BSI motherboard needs to be soldered to read the data, and then soldered after reading it ... Other operation steps are the same as ordinary car keys, but reading the anti-theft data is more troublesome, and 4S generally does not want to take such a job.
I just wrote for a long time, and I fainted when I submitted it.