ICEd or not ICEd?
I experienced the ICE starting up in Stealth mode under 628 a few times. It seemed that if I had not used the ICE in 48 hours or so, it would come on when the car had plenty of EV Charger and run for a couple of minutes and then shut itself off. I think this is one of the issues specifically addressed in 510. I have only had 510 for a little over a week so I don't have a lot of data, but it seems like the ICE issue is resolved.