Hi All, I have searched through the forum and not really been able to find anything,

This is on a 2016 RRS
I am having an issue when the car is just ticking over.

from what appears to be the middle of the car behind the dash board or in the engine bay I get a noise which i can only describe as a the noise you would get when you blow over the top of a milk bottle if you know what I mean. A bit like a warbling sound, or slightly like whale song (checked and no Whales stuck in the grille)


It is an odd noise that can sometimes go from loud to quiet and back again, and only when the car is ticking over, as soon as I rev the engine or pull away the noise instantly goes.

I thought it might be air in the aircon system or the blower fan but on switching the climate control right off the noise is still there.

It is going to be a few weeks before I get any free time to take it in to the dealership so was wondering if anyone has any ideas on what this could be?

Thanks in advance for any help.  2017 Range Rover Sport Autobiography