Horn Assembly problems of the 2020 Toyota RAV4

New vehicle, parked in enclosed garage, at home for thirty-six (36 ) hours. Vehicle had approximately six-hundred (600) miles. Wife made attempt to start the vehicle but the battery was dead. No lights, no horn functioning. Called Toyotacare for assistance. . They responded and determined the new battery had five (5) volts. This was described as a totally dead battery. I took the vehicle back to the dealership, Toyota of olympia (washington) replaced the dead battery and installed a battery trickle charger. The next day, we drove the vehicle for at least five hours and parked in closed garage. Battery voltage was 12. 67 volts. After three hours, parked, the battery was 12. 69. The next morning at 6am the battery was 12. 63. Within three hours (9am) the battery was 12. 45 volts. Any battery at 12. 45 volts is considered a dead battery. Within twelve hours the battery diminished from fully charged to dead visited the web site of cargurus and located approximately sixteen other complaints with the exact same problem- dead battery after vehicle is parked for two days.