Apparently there was a field remedy to over fill the box to 2.35 litre
Remove transmission oil filling screw.
Remove engine cover, if present.
Remove transmission oil drain plug and drain transmission oil (can be used again).
Drain transmission oil approximately 10 minutes.
Install transmission oil drain plug - torque 35 Nm.
Refill used safed transmission oil up to 2.35 litres.
Fill transmission oil (2.35 litres) back into transmission.
Mark transmission oil filling screw with permanent pint "yellow".
Install lower engine cover, retrofit if necessary.