Engine Exhaust System problems of the 2015 Toyota Highlander

The contact owns a 2015 Toyota Highlander. While driving approximately 65 mph, the subframe fractured due to the rear bolts on the frame being too tight. The vehicle was towed to a dealer where it was diagnosed that the rear bolts were not properly installed from the factory associated with the torque. The dealer inspected the subframe and stated that it did not need to be replaced. The dealer replaced the rear hybrid drive motor, rear differential, the entire exhaust system from the motor to the muffler, and the driver side suspension control arm. The contact stated that the subframe needed to be further inspected and replaced. The contact also waited longer than two weeks for the parts to receive the repairs due to the failure. The vehicle was repaired and the contact took the vehicle to another dealer who inspected the frame. The second dealer, a manufacturer's technician, further inspected the vehicle and stated that the subframe was cracked. The technician stated that the contact had the option of receiving a repair of the frame being welded or various parts would need to be removed to replace the subframe, which was an extensive repair. The contact was uncertain of the best course of action to permanently repair the condition. The VIN was not available. The approximate failure mileage was 11,562.