The steering failure happened to me when taking initial delivery in June. While sitting on the Dealer's lot going thru all the orientation stuff, PCM setup, etc. with the engine idling, got the same "steering effort" message in yellow. While playing around with it with the salesman (who is a long time Porsche fanatic and PCA club racer), the warning turned RED and read something to the effect of "total loss of steering support". FYI, it had ~40 miles on it at the time from delivery, PDI, etc.
Pulled it into the shop & diagnosis was "steering rack control module failure" or something of the sort. Dealer tried for several days to locate a replacement, but of course there were none in the US and nothing was available from Germany for a "parts order".... I guess they were all destined for new car builds, with none released to parts inventory.
After many discussions between the dealer and PCNA, they finally took a complete steering rack assembly off of another newly arrived Macan and installed it in mine to get me going. All the time (about 2 weeks total) I drove one of their Macan demos, so got to learn all the playthings on their car. Only bad thing is demo was an S & mine is a Turbo. I now have ~8,000 miles on mine and the steering has been completely trouble free. The car however has all the common alarm, washer drip, wiper sweep, wonky PCM, etc. early build stuff which I will get addressed at the 10K service visit.
Not to worry, it will get sorted out, it's just an annoyance, especially if you waited 6 months to get it like I did.