The transmission is whining at medium speeds of 30-35 mph. The transmission started making the noise about 3 weeks ago. It appears that Toyota was aware of the potential defect in the transmission as Toyota issued a technical service bulletin (T-SB-008-21 and NHTSA # 10188917) on February 9, 2021. The TSB was sent to dealerships 17 days before we purchased the vehicle. Toyota took no steps to notify the owners or to prevent the sale of the vehicle with a know defective transmission. The TSB said the only cure to the defect was a transmission replacement. Toyota offered no extension for this drivetrain defect beyond the standard 60 month/60,000 mile warranty. Our vehicle is just outside of these parameters at 70k miles. The vehicle should not have been sold with know defects in the transmission and Toyota at the very least should offer to extend the standard warranty.