Good morning all.

I have just taken delivery of a lovely 2015 (MK3) elegance that has an issue. Under load at different rpms I get a low rumble/rattle that sounds like it's coming from the centre console and it's driving me mad.

It only seems to do it when the AC is on. The AC is cold and I had it checked yesterday and it's the right temp but it also does hiss when on low.

If I start the car without the AC on I

I've Googled the issue to death but can't find a solution.

If it's the compressor how can I check that, please?

Thanks all

So with AC off but fans running there’s no funky sounds?

 

I was going to suggest changing pollen filter anyway, do it the correct way by using cardboard underneath the pollen filter then withdraw cardboard and pollen filter together!, when it’s out you can shine a torch in by the fan and check there’s nothing in there (it’ll be tight so small mirrors might be needed) 

 

If that’s all clear and only works with AC on then I’m outta ideas

5 hours ago, Danoid said:

So with AC off but fans running there’s no funky sounds?

 

I was going to suggest changing pollen filter anyway, do it the correct way by using cardboard underneath the pollen filter then withdraw cardboard and pollen filter together!, when it’s out you can shine a torch in by the fan and check there’s nothing in there (it’ll be tight so small mirrors might be needed) 

 

If that’s all clear and only works with AC on then I’m outta ideas

I've changed the filter but never checked fan. The noise is quite deep with plenty of vie

I should have said the sound is behind the dash