The contact owns a 2024 Toyota Highlander. The contact stated that while placing groceries in the trunk, the lift gate violently fell on her head. While in the trunk, the liftgate came down, and her cousin was able to stop the liftgate from closing on the contact. There were no warning lights illuminated. The contact had a continuous headache and dizziness, and it was determined that she had a concussion when medical attention was provided at the emergency room. The vehicle was taken to a local dealer, who was unable to duplicate the failure, but the vehicle was not diagnosed or repaired. The manufacturer was contacted and referred her to the NHTSA hotline. The failure mileage was unknown.