I have a whining noise coming from what sounds like the transmission but I'm not sure. It goes up in pitch as you rev the motor at a stand still and when your driving. The transmission shifts fine and there is no leaks. I replaced the drivers side axel some time ago and when I removed it a small amt of trams fluid came out, maybe a half pint or a little more. The whining got a little worse for a short period ( maybe a day or two) then went back to what it was before. Is This is a sealed trams since there is no visible dipstick or any wa that I can see to add fluid. I assume there has to be because there is a trans pan.

 

I notice nobody bothered to answer your question. Did you come right and manage to find the fault? I have an '09 XF and had a similar problem in November last year. Took it to Jaguar and they replaced the idler pulley, but the noise was still there - popped the hood only to see an oily substance all over the side of the engine bay and traced the leaky substance to my car's water pump - it was coolant and the waterpump had failed making this whining noise that engine's revs. All good ever since the water pump and belt were replaced. Hope this at least helps.

 

I was going to say water pump or Power steering pump.

 

Is it the AWD version? If so it will probably be the transfer box.

 

He said while STANDING STILL, I guess that means not moving..