Finally after several months I was able to solve the problem of idling ticking with the hot engine that many complain about.
In my case it was due to the engine wiring, more precisely I found in the bundle of wires that go to the control unit near the battery 5/6 bare wires
with the damaged cover (chapped peels) I insulated them individually with insulating tape and covered the beam with self-amalgamating tape.
After this operation I heard the infamous ticking still the first day, the second day barely noticeable, in the following days disappeared.
I waited to write to be sure, 2 months have passed, the noise is gone.
I recommend to those who have this problem to remove the plastic cover over the engine and inspect all the wiring that you can see, look for
any anomaly (stripped, cracked cables, bad connectors) if you do not find anything, get help from an electrician also for the wiring part
behind and under the engine not easily visible
I hope I have been of help, let me know what you find