Does Rivian have an OBD-II (OBD 2) Port?

[sillygoose]

I have some iPhone software that could use access to the vehicle state: Mustang Mach-E trip/charge app

I could do trips manually with a start/end button as the iPhone provides all the trip data but the energy use and charging data I need to get from the R1.

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[Supratachophobia]

I believe it is required by law. But as such what is on it will be limited. The bulk of the meaty data will be carried on internal busses (CAN?, Ethernet?...) not accessible to us.

Why? I can decode canbus info with an odbii module on my Tesla.

 

[jwardell]

The BMW cables work, including the cheap one from amazon. But you can't do much without rivian authentication.

 

[kallisti5]

The BMW cables work, including the cheap one from amazon. But you can't do much without rivian authentication.

Yeah, this is what I suspect. I'm mostly attempting to remove unknowns with what's available. I'd hate to spend 6 months poking at Rivian's authentication to discover they're expecting 400 ohm vs 500 ohm resistor or something which quietly breaks the DoIP connection.

 

[Gdorff]

Okay so I received the Rivian branded obd to Ethernet port today.

Here's is my finding so far.

Obd pin 6 / Ethernet pin 1
Obd pin 14 / Ethernet pin 2
Obd pin 13 / Ethernet pin 3
Obd pin 12 / Ethernet pin 6

Obd pins 4-5 / Ethernet 8

Ethernet pins 4,5 and 7 appear open and do not appear to pass through to any pins on the obd side.

I also didn't measure any noticeable resistance on any of the pins.

The cable that arrived from Rivian is not serviceable like the photo on the website. It is a solid molded cable.

I haven't had a chance yet to hook this up to a laptop, but when I do I'll also Wireshark the connections to see if I can find any details.

I'll also see what other details I can find out..

 

[Flexia]

Have there been any progress with the network port?

 

[Gdorff]

Have there been any progress with the network port?

I can say I have connected the cable to my laptop and ran a Wireshark and could not see the Rivian requesting or sending data. I can say that it does establish a network link.

I also tried placing a router in the vehicle to act as a quick and dirty DHCP server and the truck didn't request any IP information.

I'm not exactly sure what kind of data would be passed/requested from the truck at this point.

I'm sure they're using some semi standard methods of doing this. Just now one in familiar with unfortunately.

Anyone else have anything they'd like me to try?

 

[CommodoreAmiga]

I can say I have connected the cable to my laptop and ran a Wireshark and could not see the Rivian requesting or sending data. I can say that it does establish a network link.

I also tried placing a router in the vehicle to act as a quick and dirty DHCP server and the truck didn't request any IP information.

I'm not exactly sure what kind of data would be passed/requested from the truck at this point.

I'm sure they're using some semi standard methods of doing this. Just now one in familiar with unfortunately.

Anyone else have anything they'd like me to try?

Seems feasible they may rely on static IPs.

 

[Gdorff]

Seems feasible they may rely on static IPs.

I agree it would seem like that would be the case, but Wireshark should have seen traffic from that devices if it sent any network packets.

I tried a few tools to scan for tcp or udp traffic and didn't see the truck talking at all.

Now it could just be very quiet and basically only listening or talking when it's told to..

Could be it uses like a magic packet to wakeup the truck then communicate over the statically set network..

I'm open to trying any suggestions anyone may have..

 

[sillygoose]

When I first sniffed the two CAN buses on the Mach-E OBDII connector I was surprised to see no traffic (I was new to this and thought it would be like an old-school CAN bus and I was doing something wrong).

In the Mach-E, the OBDII connector attaches to a gateway module so there is no traffic until you request something UDS service 0x22 (Read Data by Identifier). Then you can query the various modules for their data and the gateway module figures out which of the many CAN or ethernet buses it needs to use to talk to the module.

Perhaps the Rivian is using UDS over Ethernet (or something similar) and you would need to make a request but without being able to watch the Rivian diagnostic software I have no idea what it might look like.

 

[kallisti5]

@Gdorff interesting, so there's zero resistance between ODB pins 8 / 16 and they're floating?

 

[Westhefarmer]

You all are much smarter than me!

I was part of a study in Canada that sent us OBD2 dongles that logged our trip data including ambient temp, idle time, accessories vs drive unit usage, starting SOC vs ending SOC, distance travelled, and average speed. I loved it so much as it gave us a downloadable spreadsheet of the data! This was for my eGolf which didn’t provide you a SOC% so it was really useful to find out actual data.

I would love to have something similar for the Rivian… good luck on your OBD2 investigating!

 

[atl-far-east]

Any progress @kallisti5 or @Gdorff? Supposedly have Rivian's DBC so wondering if there's a way to read/intercept the signals to make use of it.

 

[zefram47]

You all are much smarter than me!

I was part of a study in Canada that sent us OBD2 dongles that logged our trip data including ambient temp, idle time, accessories vs drive unit usage, starting SOC vs ending SOC, distance travelled, and average speed. I loved it so much as it gave us a downloadable spreadsheet of the data! This was for my eGolf which didn’t provide you a SOC% so it was really useful to find out actual data.

I would love to have something similar for the Rivian… good luck on your OBD2 investigating!

Give ElectraFi a try... It uses the core code from TeslaFi and tracks all drives and charging sessions, including idle and sleep time / phantom drain. Other than the desire to run it in my own environment, I'm enjoying access to all the data. I'm still on the trial version, but will likely wind up paying for it.

https://electrafi.com/

 

[kallisti5]

No progress here. I tried to sell some diagnostic adapters I built at cost to get more people access on etsy, but Rivian sent me a cease and desist I guess putting "Rivian R1 vehicles" on them was enough for their legal team.

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