Transmission Acceleration Performance Reduced (German Authobahn problem?)

Hello All,

By means of introduction: I've just picked up my new - long awaited - XC90 D5 Inscription last week (2017 model). It seems this error only occurs when driving in Germany on the Autobahn (as then the most power is required from the engine), and not when driving in Holland / Switzerland on normal speeds (i.e. 120 km/h). Antworten auf Deutsch ist kein problem, vielen Dank im voraus!

On the very first drive, I've received the following warning:

Transmission Acceleration Performance Reduced (combined with turtle icon, see picture below):

http://i63.tinypic.com/2lx854z.jpg

As you can see, the first time this error occurred, the car had only run 239 km. I was driving on the Germa...