I, too, have a 2019 Ascent
I, too, have a 2019 Ascent and only left the hatchback open for 10-15 minutes as I was loading up the car. Closed the hatchback, got into the car and... car battery DEAD with my dogs LOCKED INSIDE and no way to get them out in 100 DEGREE WEATHER!! Dogs were in crates that faced the hatchback too! INCREDIBLY SCARY SITUATION!! And... the "SOS"/Starlink does NOT work if the car won't start either! It's a BIG PROBLEM for some with dogs like Subaru advertises!! SO PO'd!! (Car has less than 2k miles on it!)