Do you have AC on, or any other devices that could make that noise? It sounds like its doing something in the cab before starting the engine.
Mine sometimes has a choppy start like a heart palpitation, but not a loud mechanical buzz like that right away.
Sound normal to me the buzz happens on my 2017 BN from new I believe its the steering lock.
When you first get in and hit the start button it will buzz disengage you can then cycle the ignition and it wont do it again until you open the door with the car off then you will hear it buzz reengage.