Odd Noise From Under Back Seat.

[BigBlueBear]

Hi all - I was wondering whether anyone has encountered a similar issue to what I currently have on my Auris Sports Touring Hybrid (2013).

After about 20 minutes or so, whilst in motion, a whirring noise seems to start from under the back seat, left hand side. It sounds a bit like putting a CD into a CD player and it spining around. It only happens when travelling above 15-20 mph and is not present when at a halt or below this speed. When the car pulls away and you gather speed, it starts again. After a while, perhaps 30 minutes or so after the noise starts, it often stops.

I'm guessing it is related to the Hydrid batteries, perhaps a fan(?), but the noise is becoming more frequent, and annoying! Even with the radio on, you can still hear this nagging noise in the background.

I asked the dealer to look at it a few weeks back during the last service, but they found nothing, and the noise wasn't as frequent as it is now. I'm going to speak to them again, but would appreciate any advice or thoughs from guys on here.

Cheers!