There is no DQ200 DSG service, who advised you of this? There are two fluids used in the DQ200, one for the gears and one for the Mechatronic, which one was changed? There is no reset and it is unlikely there is a software update for it, do you have a full scan of the transmission? What problems are you experiencing?

 

The mechanic filled the gearbox oil with fully synthetic oil and they drained the old oil and filled it via a massive syringe.

the codes that now come up are saying clutches have reached tolerance 1 and 2 P177B.

I think because of the oil not being dealer spec it’s allowed not met the requirements of the clutch and it’s been eating away possibly.

due to this I don’t know if it can be fixed by doing a re calibration on the clutch because in 4th gear when putting power down it revs and catches.
All other gears are fine just 4th.

 

To me it sounds like the oil they changed was the gear oil and this has absolutely nothing to do with the clutch operation, this is by the Mechatronic fluid which isn’t classed as being serviceable even though it can be. Synthetic gear oil cannot damage the Mechatronic circuit board as the synthetic Mechatronic fluid did when it reacted with the Lead free solder used, you are getting the synthetic oil problem confused.

 

What I’m contemplating is to recalibrate the gearbox and software update it

or will it just need clutches doing

or just to get another gearbox

I’m kind of stuck in between what’s best for the gearbox financially and also with time being off the road.

 

DG200 is a dry clutch gearbox, so an oil change won't affect the clutch operation in any way. The oil doesn't get contaminated from the clutch.

The fault is the clutch pack reaching it's wear limit, and will need replacing

 

You can't "just get another gearbox", the base unit as it is known has many variations and there are dozens of Mechatronic variations that are VIN codded.