It has been done (not for the faint hearted):

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Hi all

Noticed a slight rattle when the air conditioning is running. As soon as I turn it off, sound is gone

Its quite faint but you can hear a rattle, any ideas what it could be?

Thanks

All silly questions and answers aside.

I have a Used Facelift 2010 Octavia Rs 147TSI (49,000km). I have noticed since owning it there is a noise coming from the front section of the engine that getting louder. Even when I'm cruising you can hear a faint noise.
Would this be linked...

When I use cruise control, at random times, I can hear a very faint beeping sound. By faint I mean it's noy audible when there's music is playing, but annoying when there isn't music playing.

Anyone have the same issue? Quite bizarre I must say...