Yikes! Overheating motors.

[s4wrxttcs]

From others' pics it looks like they do though...the snowflake next to the speedometer on the driver display.

The snowflake simply means regen is limited.

It doesn't tell you that the motors are being used to warm the battery. I guess you can make that assumption. I'll have to be on the look out for that.

I tend to only get the "regen is limited" warning (due to battery temp) going down a large hill on my way to work. It waits till then before it gets activated which I find odd. Previously in my Tesla I've notice it the regen limit before I even left my driveway.

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[s4wrxttcs]

I think it can be argued that sometimes its good for customer service to have something they can actually help with.

if I contact the Rivian about my tock sound I'll get the same run-around that they simply can't fix it. They don't know how to fix the early VINS to get them to stop making a tock type noise on acceleration and declaration.

If I contact Rivian about passive entry (either FOB or phone) issues there isn't much they can do either.

Probably 90% of what I would contact Rivian about is either things they can't do anything about like the above or simply reporting SW bugs. Things like the Nav maps rotating when they're not supposed to rotate.

The other 10% is for service which I can't even schedule on the app because its too far out.

So maybe its a good idea to keep this information available. To give a feeling of actually being able to help.

 

[Mathme]

Since the last update, I've put about 1,000 miles on my R1T. 800 of that was on a trip from the Bay Area to Seattle. While watching the display driving up, all 4 motors were running about 150 degrees and the battery was in the 70-ish range.

Yesterday when I got into the truck and shifted into gear, I received a "Acceleration and Regeneration performance limited while battery is warming" message. I was only driving about 4-5 miles on this errand so I watched the display. The battery temp was about 47 degrees and immediately after pulling out of the driveway and moving, the motors had a different pitch to them and they heated up into the 200+ range. When the battery go up to about 50 degrees, the motor pitch went back to normal and the temps dropped back down to the 150 range again. My average consumption was about 1 kWh/mile. No error codes were thrown

My conclusions from this observation are that this is normal behavior when the battery is cold as the only way to warm it is to get the motors hotter than normal.

 

[zefram47]

The snowflake simply means regen is limited.

Maybe? I haven't seen it this year / since we got the gauge view, so unsure. Usually when I get the regen limited notice I get the orange circle looking thing in that location from going down a hill and exceeding some threshold. The cold mornings so far where the battery has still been 50F+ I do see reduced regen in the driver display via the hatched portion of the gauge, but I haven't gotten an actual text-based notice on the driver display saying reduced regen.

 

[Singletracker]

Here’s an update to my original overheating situation. Still not exactly sure why it happened, but suspect cold nights and days had a lot to do with it. The weather, especially the over night lows, has warmed up a bit since and I have seen no unusual motor temperature spikes. Rivian told me that it should be okay as long as that red bar doesn’t hit the red vertical line on the right of the graph. However, when it gets into the 270+ degree zone, it appears darn close to that line, but who knows. Anyway, it’s somewhat of a relief that others have experienced this same situation and lived to talk about it ? Lots to learn with these EV’s.

 

[LevelHeaded]

FWIW exact same thing happens while preconditioning on the way to a DCFC. Observed multiple times this last weekend.

 

[Mathme]

Same here. I had been on the freeway for over an hour on the way to a charging stop. The GPS gave the preconditioning warning and a few moments later I looked at the details. In the screen shot below you can see the motors are getting warm, yet the battery is still cold. A few moments later the preconditioning notice disappeared and the battery was up to about 80 degrees. As soon as it quit preconditioning, the motor temps dropped rather quickly. Again, the motor pitch was different while warming the battery.

Later Friday the weather had warmed up into the 80s and battery temps were up above 100 before another charge stop. In this case, the preconditioning was lowering the battery temp so it could absorb charging heat. You can't view the battery temp while charging, but you can right before and after and there's a noticeable difference.

This is a smart truck and so long as it's not throwing codes at you, it appears to be operating as designed.

 

[emoore]

Here’s an update to my original overheating situation. Still not exactly sure why it happened, but suspect cold nights and days had a lot to do with it. The weather, especially the over night lows, has warmed up a bit since and I have seen no unusual motor temperature spikes. Rivian told me that it should be okay as long as that red bar doesn’t hit the red vertical line on the right of the graph. However, when it gets into the 270+ degree zone, it appears darn close to that line, but who knows. Anyway, it’s somewhat of a relief that others have experienced this same situation and lived to talk about it ? Lots to learn with these EV’s.

Did it hit the red or just orange? If it didn’t hit red then it didn’t overheat.

 

[Singletracker]

Orange, red - I’m not sure there is a difference. On my truck, it looked more red than orange, especially on truck diagram. Unless somebody has verifiable knowledge, not just speculation, I’m going with what Rivian told me. The person I talked to never differentiated between redish or orangish, and I had sent them pix. It seems that the Red vertical line on the right of the graph was the point at which the truck would hopefully deal with it, send out a warning, make adjustments or whatever. Of course we all know how finicky these technologies can be ? Suffice to say, based on what others have actually experienced and what Rivian told me, I’m no longer concerned about it.

I love my R1T ?

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