Connecting to OBD port on my car with ethernet cable

[bacewinu]

Here is my situation. 

I have a new Dell laptop running Windows 11. There is no ethernet port on the laptop. So I have an adapter ("USB to gigabit ethernet adapter" made by Cable Matters) that allows me to connect a RJ45 (ethernet) cable to the USB port on the laptop. The other end of the cable is plugged into my OBD port on my car. I have a program (bootmod3) on the laptop that modifies the DME setting on my car. It should automatically connect to this program after I plug everything in and start the car. It doesn't.

Anyone have any idea how to tell the laptop that the USB port is the ethernet connection?

[goretsky Supervisor]

Hello,

I have never heard of car that had an Ethernet (RJ-45) connector for it's ODB-II port.  The cars I have owned always had a 16-pin ODB-II connector, and the connection was done over Bluetooth to a dongle that had an ODB-II plug on it.

Perhaps the car uses an RJ-45 connector for its ODB-II port, but uses different signalling than Ethernet?  I have heard of RJ-45 connections being used for audio, serial, USB and video connections, as opposed to sending Ethernet frames.  Perhaps the car does something similar, and requires a special cable or adapter for its ODB-II port.

Regards,

Aryeh Goretsky
 

[Henry2022]

An OBD2 scanner usually connects with a 16-pin, Bluetooth, or Wi-Fi connection. But you are talking about something new. If the problem is solved, please share how you fixed it.