No need to worry, this is basically completely normal. There are two things to hear:
- There is a click in the gear selector. This is the locking of the gear selector when you start driving. This prevents you from switching back to in R while driving.
- In addition, when you start driving, you will hear the self-test from the ABS sensor. This is the quiet clacking that comes from the front and can sometimes also be felt on the power pedal.