Certain 2015-2018 Model Year Edge, 2019-2020 Fusion and MKZ Vehicles Equipped with a 2.0L EcoBoost Engine and 6F35 Transmission Rattle Noise at the Transmission Bellhousing Area � Flexplate Crack In some of the affected vehicles, a cracked flexplate may cause a rattling noise at start up and/or while driving the vehicle. The rattling noise may vary with vehicle operation and is most apparent with transmission in drive at idle speed. Some customers may also feel a powertrain vibration, encounter an inability to start the engine, or experience a loss of motive power while driving.