All BlackVue dashcams turn to Parking Mode automatically by default once the vehicle is stationary for a few minutes. If the car is parked and the engine is turned off, the dashcam will keep recording only if it is hardwired to the car's battery using Power Magic Pro or native 3-wire hardwiring cable (Only for X and X Plus which are 3-wire models) or connected to a Power magic battery pack. 

The BlackVue keeps recording all the time in Parking Mode, but without writing to the microSD card.
The video is recorded only if a motion or an impact is detected, creating a video file that starts 5 seconds before the triggering event (using the buffer memory) and saving that file to the memory card.

If you want the dashcam to be recording during Parking mode all the time, just like in Normal mode (Driving mode), you can disable the "Auto-switching to Parking mode" in dashcam/firmware settings -> Basic settings -> Recording settings.                      

For further information about Parking mode, please refer to our webpage below.  https://www.blackvue.com/blackvue-dashcam-parking-mode/