The battery in my 2019 Subaru Outback completely drained overnight, requiring me to use the emergency key to open the door and emergency cables from another vehicle to restart my Subaru. When I took the Subaru to my local garage, they found nothing wrong with the battery or car. No lights had been left on, and no doors had been left open. The battery has now been recharged and runs fine, but I am extremely worried that the same thing may happen again, leaving me or my wife stranded in some dangerous area. The mechanic at my garage said that he had heard of similar problems where connections for satellite radio (Sirius) sometimes caused similar problems and required a replacement "module."
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