The first (russian) video shows how to remove the prop shaft. You need to do that to remove the haldex and replace your seals.

The second video shows how to service the haldex and refill the fluid. He takes it for a drive to circulate the fluid, but you can also leave it on the jacks, and turn the ignition on (motor off) for five minutes to circulate the fluid before the final fill, that's what LR manual says to do.

As far as leaks go, you want none because the haldex has a relatively small amount of fluid so even a small leak will cause problems sooner rather than later. Page two of this thread has a blow up diagram of haldex parts and talks about a seal kit. Get your haldex out, then it's easy to take apart and replace all the seals. Some people take the clutch pack apart and clean it, personally I would not bother with that. I'd just replace the seals on the pump, shaft, and body-to-diff. Looks like the ECU has a gasket too that comes in the kit.

https://www.freel2.com/forum/topic16714-15.html

Also verify whether you have a Haldex 3 or Haldex 4, the parts might be different.

 

huge help, also thank you for the boost of confidence. Ive got a gen 4 haldex. Vin is not in the range of the service bulletin. Just the leaks from the awd are the biggest crutch right now.