The contact owns a 2022 Jeep Grand Cherokee L. The contact stated that while his wife was driving approximately 70 MPH, the electronic rear liftgate door erroneously opened. During the failure, the message ‘Power Liftgate Temporarily Unavailable’ was displayed. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The failure mileage was 71,651.