There's a lot of reports and suggestions of how to fix Galaxy s8 disconnect issues and Android auto. Seems to be common with this phone.I've had my 2018 EX since March and I have the same issue where it randomly disconnects. After a few minutes of it not reconnecting on its own, I will unplug and replug it back in.
PIA when I'm on the highway and using Google Maps.
Dealer couldn't replicate the problem nor did they find anything wrong with the port. No surprise there.
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Do some googling, cursory look and it seems like people are finding solutions. If you find one that works report back for others!
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