there is a thin layer of rubber that runs across the lr2 sunroof 90% of the time on the sides close to the doors they get loose wich will cause the problem and your only hearing it because the glass is open. also if you notice the wind deflector is nothing but cloth with holes in it. another suggestion check the glass seal that is on the body (not the glass) runs all around opening these come off really easy.

 

Its ironic, but I had a conversation with an LR service manager today about this issue when I was dropping my LR3 off for service. I recently got rid of an 07 Volvo S60 because it had so many issues and traded for the LR3. The noise coming from the sunroof even when it was closed in the Volvo was unbearable and the only way to tolerate it was add a wind deflector and keep the shade pulled.

Guess where LR got the sunroof design for the LR2? It was brought over from the Volvo sedans under Ford. The only difference is that the Volvo sunroof retracts into the roof instead of over it and the Volvos have a solid sunshade that is better at cutting down on the noise. The Volvo dealer told me that it had been an issue in their cars for years.

Just another sad tale of Ford's mismanagement of two premium brands....importing problematic parts from one car into a new design.