lexusrx400h1001

Hi, any update on this problem? Any ideas to what the problem was? I have the same problem on my 2009 LexusRX400h (70k on the clock). Dealer siad it was the wheel bearing and although I got this changed the noise remains. Comes in around 40mph, very loud around 60-70, then goes away - It's a loud howling noise. Tyres have been changed and made no difference and tracking is fine. Althogh the car has FSH, not sure if the geadbox / Diff oils have been changed - woudl that be a good next step?