So the mystery deepens. The horn has gone on strike. Just wondering if two matters are connected. I've checked glov猫 box fuse. All good. Even put a new one in, but no change.
 
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It needs to be checked at the horn for power coming to it/them.. Another job on the list gold馃ゴ
 
I have one that sounds like a bird in the dash. It鈥檚 the fan in the electrical box under bonnet, it鈥檚 only a little farting 12v fan but takes its air from the cabin so that鈥檚 why it鈥檚 so clear to hear the noise as it travels through the air duct.
Mines back with a vengence tonight, as you say it's coming down the air vent.

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I鈥檓 sure all the electrics in the electrical box under bonnet just unclip and slide out then you can access the little fan in the bottom of the box. Can鈥檛 be certain though as it鈥檚 from what iv seen not had a look into mine yet.
 
I鈥檓 sure all the electrics in the electrical box under bonnet just unclip and slide out then you can access the little fan in the bottom of the box. Can鈥檛 be certain though as it鈥檚 from what iv seen not had a look into mine yet.
Cheers @rich28uk looks like my next job for the weekend :D


It's a Merkin video but you can't have eveything

 
I could be a mile off the mark, but when the Body Control Module loses power it will sound off for about 30 seconds (sound is like a constant alarm sound) I had this happen on my L322 and it turned out to be a loose harness fitting under the passenger seat, quick click and it never happened again
 

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