Hi guys. Sorry I'm writing in english, I'm from Slovenia and I dont understand german, so I'm helping with google translate 
I have same problems, "Automatic gearbox overheating". And before this error comes up, it feels and sounds like clutch is slipping (rpm's are raising but car don't accelerate much). Mostly happen in 4th and 6th gear.
Anyone already discovered sollution for this problem?
I hope you understand me 