[Tannaton]

I believe Volvos policy is not to open up gearboxes, so a dealer is likely want to replace it entirely if the oil change/software updates don’t fix it.

There are transmission specialists out the who can overhaul it, might be better to ask for recommendations on a Ford forum?

Opinions are divided on this gearbox, but I think you’ve been very unlucky, most of the dealer mechanics will tell you the are usually reliable if looked after...