Horn goes off on its own!

[SamsXF]

I was rudely awakened this morning at 3am by a horn spasming out. I look and its my XF 3d (250)PL.

No it was not the alarm, the indicators where not going off and I didn't disarm it with the keys. It stopped going off on its own after a couple of minutes (after it had woken me and my neighbours) 

The horn sound was totally irregular, a cluster of short bursts and some looong bursts for fun?

Any ideas what it could be? I feel like my local mechanics won't have the slightest clue about this niche issue. Also I won't be able to book it in until next week. 

I'm guessing my first port of call is to clean terminals or fuse or something but I haven't the slightest clue where these are located. 

Any help is much appreciated. 

Thanks in advance, 

Sam

[SamsXF]

False alarm guys, it was my neighbors car 💆‍♂️

[Coolcity]

🙄 😅