Sorry but again, does the car have a sunroof? You might not have seen wet but the carpet can hold an enormous amount before it becomes noticeable. Sunroof drains are notorious for leaks but information on here suggests remedies.
As to your journey home, I dare not speculate, 100km isn’t far but if I were doubtful I’d take a non-motorway route home with plenty of places to stop.
If you have Toaf on a PC, try and connect to all modules, any lack of communication could indicate a fault with that unit. And have a word with your local BMW outlet.
Regards
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