R1T Diagnostics Scantool and Networking

Rivian Mom · 2025-05-15T14:45:12+00:00

I've been using my phone's hotspot for months, and my Rivian connects to it automatically to run TuneIn and Spotify through the built-in apps on the main display. To be clear, this wasn’t Bluetooth streaming but actual phone data, and the apps worked perfectly without any issues. In Monday for the first time, I saw a Connect+ message pop up, even though the truck was linked to my phone’s data. I can still stream from my phone using Bluetooth, but the sound quality and user experience weren’t as good. This issue started between over-the-air software updates, though it might be tied to a specific date in the system. I tried a soft reset, but nothing changed. Has anyone heard if Rivian changed their policy on this? I remember Connect+ used to mention it provided "data" for streaming apps, suggesting you could use your own data instead. Now, it seems like you need Connect+ just to access the apps at all. I was surprised they allowed phone hotspots to work before, so this might be a deliberate change. I’m okay with paying for Connect+ if this isn’t just a temporary glitch. Any insights would be appreciated.

wildlife R1T

Member

Mar 4, 2025

As a mechanic and an aspiring electrical engineer, I have interest in understanding the inner workings of my R1T. I also am an avid supporter of the right to repair movement, so I wish to make a place to post information related to vehicle diagnostics, scantool, and networking. Here are some things I've learned:

R1T has an OBD2 port on the bottom left of the dash. No CAN bus lines are there. However, there are 4 Ethernet pins and an activation pin similar to many European cars that use DOIP. Power on pin 16, ground on pins 4 and 5. See below picture for the harness I made.

Unfortunately, the vehicle does not respond to standard DOIP messaging and I don't have a Rivian scantool, so I can't confirm that diagnostic data can be read at this port.

I also discovered at least 5 CAN bus networks running through the passenger side kick panel nearest the door. Unfortunately I don't have any DBC files to decifer what they are saying though. Feel free to post if anyone has any useful diagnostic or CAN info.

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