Very strange initial "beep"

[Jacobkollerup]

Hi guys!

So the normal "beeep" has suddenly changed to almost a short tune. I recorded this short video:

The engine starts and runs perfectly.
It's an merc 6.2 mpi from 2006. Yesterday with the normal beep, today with the melodi. Anyone has clue on this?

Best regards
Jacob

 

[alldodge]

That is different, don't have a clue but sure look forward to the investigation. Would like to know if there are any codes which show up