First, when discussing issues that may be related the updates, it helps to specify the version.
What I have noticed with 19.40.2.1 38f55d9f9205 us a chirping noise for about 10 seconds when I first get into the car. It happens whether connected or unconnected checked and whether it is in power saving mode or not. And the app will connect to the car in either mode. I haven't notice if the chirp repeats once the initial chirp series is finished.