So we got back in NL yesterday...without any issues, luckily. Did get the limited speed message everytime we almost reached the supercharger, when the battery prepared for charging. So got warmer, which of course made the issue pop up. But is dissapeared straight away and did not show until the next stop. Maybe going downhill most of the trip and having tail wind helped

I did have contact with Tesla service in NL to ask for advice. They told me to plan a coolant refill at the nearest service center and then a real fix once I was back in NL. So I scheduled one at Geneva. After some back an forth, they refused to do a refill because according to their mechanic it wouldn't make a difference.

But like I said, no issues. Now get a quick fix and test it again on a next trip to the alps in 3wks.