NHTSA Complaint #11468373 — 2020 SUBARU OUTBACK

Battery died and will not hold a charge. Air bags were not engaged due to the elctrical system being impacted. Battery was charged and left overnight and the battery was fully drained in the morning and the car would not start. Battery was charged again and driven to the Subaru Dealer. The dealer fully charged the battery and left it over night and the same thing happened the next morning. The battery was drained and the car would not start. The dealer replaced the battery with a new battery and performed a software update. Next morning the battery was fully drained and the car would not start. The dealer as of today does not have a solution after have the car for 3 days. The dealer has told me they have all the diagnostic tests they can think of and nothing is showing up as being wrong or that identifies what is draining the battery. I believe the Control Area Network (CAN) is failing and is not going into deep sleep mode when the car is shut off and is causing the battery to drain. Until the defect in the CAN software is fixed the battery will continue to drain.