The contact owns a 2019 Toyota Highlander. The contact stated that while driving at various speeds, there was a whining sound coming from the transmission while accelerating. The contact stated that over time, the whining sound became louder, and the vehicle later had transmission shifting malfunctions. The vehicle was taken to the local dealer, who diagnosed that the transmission was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was not contacted. The failure mileage was 64,000.