You really do need i.d.s/w.d.s to diagnose these....
Most service functions are controlled by it,learning clutch,learning touch point,learning transmission & any bleeding needed.
The hydraulic oil used to run clutch cylinder & shift mechanism is unique (£18 per litre i.i.r.c)
You may be able to flush hydraulic oil thru without ids but be careful,the hydraulic pump produces serious pressure (pump primes system when you open drivers door)
Gearbox oil is same as standard manual (MT 75) transmission. 75W90.
There is a bleed nipple in top of motor/pump pack & one on clutch pack,i/w.d.s is required to do another "internal" bleed which doesn`t require any bleed nipples opening.....