Trap? What trap?
All Volvos as far as I know use Japanese Aisen transmissions.Thought that was mainly on the Volvo trannies not Yamaha ones, did have a slight issue with mine but a fluid change on it and she was sweet. When I took to the tranny shop who specialised in euros said if it was the any other XC90 he’d tell me to keep walking due to the known issues with them but since it was the V8 it was unusual for it to have issues. Anyway after that never missed a beat.