[gpvecchi]

OK, I replaced the body computer with the JDM one, now I have the lock/unlock beep (that can be enabled or disabled).
Other differences from the EU model: follow me home function is no more present, there's an option to slow down the headlight ignition when set to auto, and there's another annoying thing, a repeating beep when put in reverse, that can't be disabled. Something like the one in trucks, but inside the car.
This would be funny if I'd not have reverse sensors...
Oh, now there's an option that can be enabled in Security tab, but I don't know what it is...