With battery getting low, first thing you may notice that goes is the Auto Start/Stop. After that you will notice little things like: seat memory resets and you have to set it up again, clock switches from 12H to 24H, dash board settings go to default, get the message that accessories are not on to preserve the battery. Once I replaced the battery couple month ago, (which turned out to be the original to the truck as it had a date of 3/25/2019!) the first message I saw was " ALL accessory functions are normal.", then the auto start/stop started working! We also have a 2019 Edge Titanium and when the battery started to go low, the auto start/stop stopped working.
BTW - it is an easy thing to do DIY, just remember to reset the BMS - Battery Management System. All my previous settings stayed, too! Phew!