Repeated Vehicle Error When Using DCFC

[SPITmadFIRE]

Well, my time has finally come to post one of these threads. For the last couple days, I've hit repeated vehicle errors when fast charging, that don't appear recoverable with a vehicle restart (hazards + left button). Adding some context below in case others have hit similar issues and curious to hear what the service resolution was.

2024 R1S Performance Dual Max (9,667 mi)

To start, I filed a service request about a month ago after noticing my charging speeds seemed limited. I've been unable to get more than 140kW reliably, each time at low state of charge (below 25%) and preconditioned temp (between 70F and 78F). This issue presented itself on 2 separate RAN chargers (one empty, one less than half full), 2 Tesla Superchargers, and a reliable evGO 350kW unit I commonly use. I've taken dozen of diagnostics and tried infotainment and vehicle restarts to no avail. Service was not able to fit me in until February 21st (15 weeks out), even after they reached out to me to discuss the issue. I explained I had multiple vehicle diagnostics but they were not interested in looking at them. The service center has not reached out to me about this issue yet.

Fast forward to this week. A few days ago I pulled into my reliable evGO 350kW unit which was empty. I plugged in and initiated charging. To my surprise, the charge rate quickly climbed up to 200kW or so and I thought my issue had been resolved; maybe I had my battery temps wrong or my SOC was to blame on the previous charges somehow? I put my seat back and relaxed.

Within a minute of reaching 200kW, my vehicle threw a charging error (photo above) and killed the charge session. The plug remained locked for a few moments, but once it unlocked I removed it and tried again. This time the error showed up immediately, before the charge even started. I thought the charger was broken and drove a few minutes away to another unit I'd used before. This unit was also empty, and immediately threw the same error. I did a vehicle restart (hazards + left button), waited a few minutes for the vehicle to reboot, and tried again. This charge was thankfully successful, although as soon as it hit 200kW it immediately ramped down to 175kw, and then ramped down again to 140kW (the same speed I was used to seeing for the last month).

I hit the same issue again today after a long day of driving. I pulled into a different, empty 350kW unit at 11% SOC with a perfect 74F battery temp, and began charging. The session ramped up to 200kW and within seconds hit the same vehicle error. I took my diagnostics and tried again. This time, however, a vehicle restart was not enough to resolve it. I tried 3 separate 350kW units, and before charging initiated for any of them, the vehicle showed the dreaded error. I moved to a 100kW unit which thankfully worked (albeit painfully slow) and I'm now back up to about 80% as of this writing.

Now I'm joining the chorus of voices who are frustrated with the unacceptable service wait times. When I called in, I spoke to a very helpful service representative who clearly has her hands tied. She told me the soonest available mobile service just to come out and pull the diagnostics from my vehicle is March 11th, 2025. I expressed my concern that this issue is clearly getting worse, and I already booked an appointment a month ago that is still over two months away. She made it clear to me that she'd be reaching out to my service center (San Jose, CA) to escalate and hopefully find a sooner mobile appointment.

I'm used to unreliable vehicle service; I've driven Fords and MINIs for the last 12 years or so. Never once did I have to wait more than a few days for a critical appointment like this. My vehicle feels unreliable and like I can't trust it on a roadtrip at this point. The last thing I want is to get stranded in the Sierra Nevada because charging fails completely on my next roadtrip.

Anyway, I'm mostly shouting into the void at this point. Has anyone else hit this same charge error? I'm assuming there's no way to analyze my diagnostics and logs myself. Rivian Service seems disinterested in pulling them from my vehicle and investigating the issue before I can get an appointment, which is disappointing. What's the point of all this vampire drain for constant connectivity if the service folks can't read logs remotely?

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[SPITmadFIRE]

As far as I can tell, the issue is most likely my charge port's overload protection circuit. A friend of mine had a similar issue on a different EV from a charger that was operating out of spec. They drive a Polestar and had their service request scheduled and fixed in a matter of days ?

 

[DCFC]

It's definitely the charge port on the vehicle. It's overheating, or at least thinks it's overheating. I would consider calling service and saying the truck won't charge, period. No need to pull a log, the issue is the charge port.

I would add, these protections are in place to prevent the worst case scenario which is burning down the truck.

 

[DCFC]

@SPITmadFIRE

https://www.rivianforums.com/forum/...ruption-after-a-few-minutes.32603/post-678097

 

[SPITmadFIRE]

@SPITmadFIRE

https://www.rivianforums.com/forum/...ruption-after-a-few-minutes.32603/post-678097

Good find! I'm sure it's an issue in the charge port or a sensor or the wiring harness somehow; the bigger problem is making enough noise with the service folks so they can diagnose the issue before all the snow melts this spring ?

 

[Dark-Fx]

Any chance your port is dirty? I think people underestimate how important it is to have a good connection.

 

[krb1183]

I used a DCFC at an EVGo station in Acworth GA for the first time this past weekend, it was also a 350kw station. I was surprised to see the max charge i was pulling was between 60-70kw and i sat at the charger for 40 mins going from 49-80%. Ambient temps were about 50F outside. Not sure if it was my vehicle or station...just assumed it was the station. I have zero other DCFC experience, so no frame of reference or repeatability here.

 

[SPITmadFIRE]

Any chance your port is dirty? I think people underestimate how important it is to have a good connection.

I couldn't see any dirt or debris in it, I'm also not super keen on sticking anything into the DC pins of the CCS port in case there's something wrong with the port/contactors themselves

 

[SPITmadFIRE]

Quick update here; service called to say it wasn't a vehicle issue, and asked me to try another charger. The service rep who originally wrote up my ticket didn't document any of the questions they asked me in my request, and I insisted again that this error happened on 4 separate chargers already.

They ended up scheduling me in person for 1/6/25.

 

[SoCal Rob]

@SPITmadFIRE sorry to hear about this problem and it would be a really serious one if you didn’t have a slower DCFC charging option available.

She told me the soonest available mobile service just to come out and pull the diagnostics from my vehicle is March 11th, 2025.

Am I the only one who thinks it’s odd that the Rivian employee is saying the only way Rivian can pull diagnostic info is by having physical access to the vehicle? I thought our trucks were regularly sending a significant volume of data back to Rivian over wireless connections.

 

[SPITmadFIRE]

I thought our trucks were regularly sending a significant volume of data back to Rivian over wireless connections.

They claimed the service center took a look at my diagnostics, but only because they escalated the issue with them. So it seems like you have to have an appointment first, and if that appointment is deemed important enough then maybe they'll pull your logs? The support folks you talk to on the phone are not knowledgeable on the vehicle whatsoever. It feels like a game of telephone where I'm asking them to ask the service center to look into something, and they're asking me to do things that the service center asked them.

 

[krb1183]

They claimed the service center took a look at my diagnostics, but only because they escalated the issue with them. So it seems like you have to have an appointment first, and if that appointment is deemed important enough then maybe they'll pull your logs? The support folks you talk to on the phone are not knowledgeable on the vehicle whatsoever. It feels like a game of telephone where I'm asking them to ask the service center to look into something, and they're asking me to do things that the service center asked them.

I've also been told to capture diagnostic logs when an issue is happening so when I bring it in for service they can pull the logs and read the instantaneous data I've captured at a point in time. I hold the little widget/person icon by my name on the screen for roughly 5 seconds and it says diagnostic log captured. I've done this a handful of times when encountering my last issue. I'm assuming this helped them actually correct it because they were able to find the obscure issue this last time. But I do know they pulled them from the vehicle at the SC.

 

[SPITmadFIRE]

But I do know they pulled them from the vehicle at the SC.

They have the capabilities to pull them remotely as well apparently. They claim the service center has already seen the diagnostics I took as soon as the issue occurred the most recent time, and I asked them to also check another diagnostic I took for the same issue.

The important thing about diagnostics seems to be to mark down the exact time you took it and reference that time later on when talking to service folks. There's a lot of diagnostic information taken and they don't have a great tool for searching through to find the one you took unless you can narrow down their search window significantly.

 

[SPITmadFIRE]

Well, as expected this service is going to be a real headache. Dropped off my vehicle this morning, and was told they may not be able to even look at the vehicle for three weeks. It will remain parked in the service center parking lot for weeks and probably overlap with my next upcoming service appointment I booked back in November ?

Now waiting at an Enterprise rental car location with very few vehicles available because the service center had no loaners to give out.

Service wait times and delays have only gotten worse in the last year it appears. I'm pretty disappointed that this is the most "expedited" service they can provide for a vehicle that can't fast charge.

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