Rattling Noise
My 2010 Audi A4 Avant has developed a rattling noise from under the bonnet over the last few days. It seems to be mostly making the sound when the heater is on.
I have uploaded a clip of the sound here: https://www.dropbox.com/s/a5yr0w8cdf....06-2.mov?dl=0
Can anyone tell what it sounds like and if it is safe to use.
Thank you in advance.
does the sound change or go away when you raise rpm?
sounds like belt and/or idler wheel.
have you opened the bonnet and localized the sound?
recording by the front grill does not tell you the source.
Johan



