[b3lha]

Thanks for the advice.

Fluid is OK.

I jacked it up and had a look. None of the shafts are turning, so probably not an axle. If I turn a front wheel by hand then the one on the other side turns the opposite way, so front diff probably OK.

If I put the car in gear it makes a whining noise, the pitch of the noise changes as I shift it through the gears. So I think the box is shifting correctly and the problem is on the output or the centre diff.

Inserting the centre diff lock fuse doesn't change anything.

Does anybody know if it's possible to remove the extension case on the back of the trans (to inspect the centre diff), without removing the entire trans from the car?

Swapping the trans is not something I can do in my driveway, but if the centre diff can be removed separately then maybe I can fix this myself. Or am I kidding myself?

Otherwise I'll have to get two of my SVXes towed to a shop and see if they can make one good one from the bits.