BMW Diagnostic Protocols
BWM diagnostic port in F-Series cars expose an ethernet connection.
BMW tools use a prococol called HSFZ (High Speed Fahrzeug Zugang or High Speed Vehicle Access) to transmit and receive frames from the vehicle.
HSFZ
You may find more information about this protocol in the following resources:
- https://munich.dissec.to/kb/chapters/doip/doip.html
- https://www.wireshark.org/docs/dfref/h/hsfz.html
Both Wireshark and Scapy support dissection of this protocol but Wireshark requires port configuration in preferences to be able to dissect the traffic.
There are ongoing efforst to improve protocol support in both tools. See: