What Is the Difference between Marelli and Delphi of Fiat BSI System?

Question:

What is the difference, aftermarket Fiat remote, Marelli and Delphi?

what-is-the-difference-between-marelli-and-delphi-of-fiat-bsi-system-1

1.What is Marelli and Delphi

Both are Fiat BSI (Intelligent Service Box), but different brands/ models

2.How to know one is Marelli or Delphi?

Resistor allocations for buttons.

what-is-the-difference-between-marelli-and-delphi-of-fiat-bsi-system-2

3.Can Marelli Convert to Delphi and back?

Yes but not 100%, they can convert to the other system manually.

ID: xxxxx2A,

1)Press these 2 buttons at the same time, don’t release the buttons

2)Click this button 30 times, then release the 3 buttons at the same time

ID: xxxxx25,

1)Press these 2 buttons at the same time, don’t release the buttons

2)Click this button 10 times, then release the 3 buttons at the same time

what-is-the-difference-between-marelli-and-delphi-of-fiat-bsi-system-3

To Verify, check if key ID changes. (xxxx25 is Marelli, xxxx2Y is Delphi)

4.How to Generate Remote for Marelli and Delphi?

what-is-the-difference-between-marelli-and-delphi-of-fiat-bsi-system-4

(pic via Mickey)

what-is-the-difference-between-marelli-and-delphi-of-fiat-bsi-system-5

e.g. Ducato 2013 Marreli System

It is PCF7946, Marreli Magnetic System, 3 Buttons, SIP22 blade

what-is-the-difference-between-marelli-and-delphi-of-fiat-bsi-system-6

Credits to Mickey, Woj, Ahmed, Antonello…

Hope this could help!

Key Programmers for Marelli and Delphi system of Fiat: