HaveBlue
Well-Known Member
Teslas do this too. They wake up charge for 5 min and sleep for a few hours. The Autel units have good resolution but eventually lump the minutes into the graph.
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strykerwsu
Well-Known Member
Something has changed with my Rivian L2 charger as well. As far as I know it never connected to wifi so don't believe has been updated.
I have an Etron that started to stop charging but once I wake it by unlocking etc it starts to charge again. So thought an issue with vehicle.
However my R1T amd R1S also just did the same start and stop on last 2 charges.
So assume a l2 charger issue or should I look into the wiring to see if starting to overheat / bad connection etc?
I have an Etron that started to stop charging but once I wake it by unlocking etc it starts to charge again. So thought an issue with vehicle.
However my R1T amd R1S also just did the same start and stop on last 2 charges.
So assume a l2 charger issue or should I look into the wiring to see if starting to overheat / bad connection etc?
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mkhuffman
Well-Known Member
My R1T is doing something very similar to this. I started charging at 25% and it has stopped twice mid charge. The last time it stopped I went out to the truck and verified the app was correct - the charge light on the truck was off. I opened the driver door and the truck immediately started charging again.
Before searching here I asked my friend Grok if he knew anything about this phenomenon.
"
This is a frustratingly common issue with Rivian vehicles (both R1T and R1S, especially Gen 2 models), where the truck enters sleep mode prematurely during a Level 2 AC charging session, pausing the charge until it's manually woken. Based on widespread owner reports, here's what's likely happening and how to address it:
Why It's Happening
- Software Bug in Sleep Logic: Recent over-the-air (OTA) updates (particularly around mid-2025, like versions post-2025.34) have introduced a glitch where the vehicle doesn't stay "awake" long enough during charging. It starts charging normally after plugging in, but after 5–60 minutes, it goes into deep sleep mode to conserve energy (a feature meant to reduce "vampire drain"). This breaks the communication handshake with the charger, halting power flow. When you open the driver door (or use the app/key fob), it wakes up, re-establishes the connection, and charging resumes without needing to unplug/replug. This isn't tied to low battery, overheating, or hardware faults—it's purely a software hiccup affecting how the truck manages idle states while plugged in.
"
I guess this is just something we will need to live with until Rivian releases an update that fixes it?
Before searching here I asked my friend Grok if he knew anything about this phenomenon.
"
This is a frustratingly common issue with Rivian vehicles (both R1T and R1S, especially Gen 2 models), where the truck enters sleep mode prematurely during a Level 2 AC charging session, pausing the charge until it's manually woken. Based on widespread owner reports, here's what's likely happening and how to address it:
Why It's Happening
- Software Bug in Sleep Logic: Recent over-the-air (OTA) updates (particularly around mid-2025, like versions post-2025.34) have introduced a glitch where the vehicle doesn't stay "awake" long enough during charging. It starts charging normally after plugging in, but after 5–60 minutes, it goes into deep sleep mode to conserve energy (a feature meant to reduce "vampire drain"). This breaks the communication handshake with the charger, halting power flow. When you open the driver door (or use the app/key fob), it wakes up, re-establishes the connection, and charging resumes without needing to unplug/replug. This isn't tied to low battery, overheating, or hardware faults—it's purely a software hiccup affecting how the truck manages idle states while plugged in.
"
I guess this is just something we will need to live with until Rivian releases an update that fixes it?
strykerwsu
Well-Known Member
Mine ended up being my A2Z extension cord. When plugged straight into the unit never have any issues. Hope yours gets worked out.My R1T is doing something very similar to this. I started charging at 25% and it has stopped twice mid charge. The last time it stopped I went out to the truck and verified the app was correct - the charge light on the truck was off. I opened the driver door and the truck immediately started charging again.
Before searching here I asked my friend Grok if he knew anything about this phenomenon.
"
This is a frustratingly common issue with Rivian vehicles (both R1T and R1S, especially Gen 2 models), where the truck enters sleep mode prematurely during a Level 2 AC charging session, pausing the charge until it's manually woken. Based on widespread owner reports, here's what's likely happening and how to address it:
Why It's Happening
- Software Bug in Sleep Logic: Recent over-the-air (OTA) updates (particularly around mid-2025, like versions post-2025.34) have introduced a glitch where the vehicle doesn't stay "awake" long enough during charging. It starts charging normally after plugging in, but after 5–60 minutes, it goes into deep sleep mode to conserve energy (a feature meant to reduce "vampire drain"). This breaks the communication handshake with the charger, halting power flow. When you open the driver door (or use the app/key fob), it wakes up, re-establishes the connection, and charging resumes without needing to unplug/replug. This isn't tied to low battery, overheating, or hardware faults—it's purely a software hiccup affecting how the truck manages idle states while plugged in.
"
I guess this is just something we will need to live with until Rivian releases an update that fixes it?
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strykerwsu
Well-Known Member
Ok, so something seems to be going on. Im reaching out to them this week. I assumed just a warranty needs, bit might be communication issue somehow.
I am using a A2Z extension cord.
mkhuffman
Well-Known Member
I just went out to the garage and disconnected and reconnected the extension cord. The charging was paused again when I did that and after reconnecting the charging started again. I suspect there is some resistance in connector that is causing either the truck to suspend the charge, or the EVSE to suspend the charge. Do you happen to be using a Emporia EVSE?
If this keeps happening, I am going to clean the pins on the connector that plugs into the EVSE plug. I bet that fixes it. (I am betting $2.74.
)strykerwsu
Well-Known Member
No, Rivian's charger. Good info that happening with different units.I just went out to the garage and disconnected and reconnected the extension cord. The charging was paused again when I did that and after reconnecting the charging started again. I suspect there is some resistance in connector that is causing either the truck to suspend the charge, or the EVSE to suspend the charge. Do you happen to be using a Emporia EVSE?
If this keeps happening, I am going to clean the pins on the connector that plugs into the EVSE plug. I bet that fixes it. (I am betting $2.74.
@A2ZEV please see issue that has started to begin in recent weeks.
mkhuffman
Well-Known Member
I have yet to remove the extension cable to see if that is the cause. I need another long charge session to test that. The charge finished last night but it still stopped and started all night. So my little disconnect/reconnect "fix" didn't do anything.
mkhuffman
Well-Known Member
I don't think it is a A2Z issue.
Yes, I am using the extension cord. But when I went to disconnect the extension cord, I noticed it was not totally seated and latched to the EVSE plug. I charged directly from the EVSE and it charged at full speed with no drop outs.
When I reconnected the extension cord, I noticed I had to press really hard to get it to seat and for the latch to snap closed. Since I reconnected the extension cord that way, it has worked flawlessly.
If yours is latched properly, then maybe you have a contamination issue and need to clean the pins and sockets. Use a Q-Tip and rubbing alcohol.
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mkhuffman
Well-Known Member
OK, it happened again and now I am suspecting the extension cable again.
This is so frustrating. It worked fine as I posted above, and then yesterday it stopped charging in the middle of the charge. The truck says the cable is disconnected, but if I use the Rivian app to tell the truck to start charging, it does. So something is interrupting the charge. Maybe the cable is overheating and disconnecting?
I need to clean the pins and see if that helps. It is just difficult to troubleshoot because sometimes it works, and sometimes it doesn't. If it is the extension cable, it must be the pins on the plug that connects to the truck, since that is the only part of the cable that is getting wear and tear. And that would explain why it worked fine for months and now is failing.
When I figure this out, I will report back since it appears I am not the only one with this issue.
This is so frustrating. It worked fine as I posted above, and then yesterday it stopped charging in the middle of the charge. The truck says the cable is disconnected, but if I use the Rivian app to tell the truck to start charging, it does. So something is interrupting the charge. Maybe the cable is overheating and disconnecting?
I need to clean the pins and see if that helps. It is just difficult to troubleshoot because sometimes it works, and sometimes it doesn't. If it is the extension cable, it must be the pins on the plug that connects to the truck, since that is the only part of the cable that is getting wear and tear. And that would explain why it worked fine for months and now is failing.
When I figure this out, I will report back since it appears I am not the only one with this issue.
HaveBlue
Well-Known Member
Charging is super sensitive. Even loose wires in other circuits in your panel can cause trouble. I had to install another ground bar for my panel to keep from getting random ground faults. A funky wiring scheme will definitely cause issues.
strykerwsu
Well-Known Member
Its definitely the cord. As we both have same issue. Never have any issues charging direct from the charger. So far Tesla with adapter works fine, Mach e is about 60 40, Rivians stop but then restart after about 30 minutes and go on off, Audi just stops after 15 minutes and never restarts. Im going to call in on Wednesday and get their perspective since they never chimed in on the thread.
mkhuffman
Well-Known Member
My extension cord worked perfectly fine for more than six months.
I am willing to bet the plug pins are worn and the temperature sensor in the handle is shutting off the connection due to heat build-up. Once I can get my truck's charge low enough for a long charge, I plan to measure the temperature of the handle especially around the time it disconnects. I also plan to compare that to the temperature of the Emporia handle after the same amount of time has passed.
It is possible the temperature sensor in the handle is too sensitive and shutting off the charge before it needs to.
I am not driving much this week so it may be a while.
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