I just bought a 2020 Macan 2.0T. My first turbo. When I unlock the car and open a door, there's a very short whistling sound coming from the engine compartment. The engine is cold (sitting overnight cold). When I close a door and lock the car, I can hear the very same short whistling sound again and again. I've unlocked the car, lifted the hood and found the source of the whistling sound. It's the Wastegate-steller (Audi part #06L-145-614-B) on the left side of the engine is opening and closing periodically (3-seconds of whistling with approximately 40-seconds of silence in between). I also hear the same sound coming from the right side of the engine, but I haven't been able to locate the source. Should I be concerned that the Wastegate-steller is defective or the electrical system is malfunctioning?