I think my Freelander 2 rear diff is on the way out disappointingly after only being rebuilt 70 000kms ago. How can I confirm that the whine that I’m hearing is from the diff and is not a wheel bearing?
The whine started off at low speeds and used to disappear when moving quicker but more recently has become louder and doesn’t tend to go away.

Call around your local car repairers & ask if they they have “chassis ears”, they will identify the issue straight away. (Now Sold). 2008 Freelander 2 (Nazca Sand) SE TD4 Auto. Statutory write off & on WOVR for hail damage but still road legal.
171037Km as of 09/05/22
Superchips Bluefin Flash
Nanocom Evo II (also sold)

So I got a little bit of time to have a look at the diff area. I was surprised to find it was quite oily but on the Haldex side and more on the shrouds around The diff/Haldex rather than on those units themselves making me wonder if a seal has gone and it’s has lost the diff oil. I’ve never pulled the Haldex or diff apart, any suggestions/ideas as to what it could be?

Certainly looks like oil coming out of the weep hole, which means a seal has failed, possibly related to diff bearing failure.
The fact you can hear a rumbly bearing as well gives you a pretty good clue. (Now Sold). 2008 Freelander 2 (Nazca Sand) SE TD4 Auto. Statutory write off & on WOVR for hail damage but still road legal.
171037Km as of 09/05/22
Superchips Bluefin Flash
Nanocom Evo II (also sold)

Badger51 wrote:

Call around your local car repairers & ask if they they have “chassis ears”, they will identify the issue straight away.

I have had FL2s with noisy rear diff, noisy rear wheel bearing and noisy tyres and they all sounded the same to me. 3 x FL1 2 manual + 1 auto
5 x FL2 4 manual + 1 auto
Now Discovery Sport P250 MHEV SE

Many thanks for the advice and contributions. I have concluded it is a diff and have started the process of ordering a reconditioned one...