The contact owns a 2020 Toyota Highlander Hybrid. The contact stated that while driving on the highway at 75 MPH, the front passengers and drivers side top shield assembly and the engine cover under components became detached from the vehicle. There was no warning light illuminated. The contact was unable to recover the parts. The vehicle was taken to a local dealer where it was diagnosed, and the contact was informed that the was no reason for the parts to have detached from the vehicle unless there was a crash. The contact emphasized that the parts had detached while driving. The components were replaced, and the vehicle was repaired; however, the contact believed that the repair was not appropriate because there were zip ties left underneath the vehicle. The manufacturer was notified of the failure. The approximate failure mileage was 60,000.