A good summary I found here from a few years ago (the pics of the parking cam differences helped too) -
[QUOTE]I have ACC & Parking Assistant. ACC is awesome in traffic and on long drives. My understanding is Parking Assistant (5DM) enhances Park Distance Control (508) with low speed side protection (additional sensors) and active braking:
-Active PDC (prevents or limits risk of collision during parking maneuvers via the brakes)
-Rear View Camera (produces an additional image with parking guidelines if vehicle also has 5AS/Rear Cross Traffic Warning)
-Parking Assistant: the car parks autonomously both in parallel and perpendicular to the driving lane
-Reverse Assistant: driving forward within 35km / h the system memorizes the last 50m of the road and the obstacles present, by engaging the reverse gear the system takes control of the steering and retraces the road traveled in reverse. The driver remains responsible for the accelerator and brake.
508:
Attachment 2605104
5DM:
Attachment 2605105
https://www.bmwzclub.it/public/2019-...01.03.2019.pdf