MyFirstAudiQ5

So I was at service today, I had a strange pre sense incident where the car already stopped, no one behind me on a single lane road when the car shuddered as if slamming to a stop and the seatbelts pulled tight to prepare for a crash. (The screen flashed Audi Pre Sense Active - or something like that) Then suddenly back to normal as if nothing happened.
So the service tech tells me that this a common problem and I have to leave car for at least 2 days to do an update. I have not read this on the forum, any one hear of this?

AndroidRobot

I haven't heard of any update, see if there's a TSB or new software version mentioned when you pick it up