Dual Motor All Purpose not smooth now

[Wokka1827]

Welp, Rivian have turned around on mine and noted that it’s a “normal” and “expected” thing to occur - something tells me this is how it’s going to be moving forward - thankfully it’s only a lease so they can just deal with it down the line when they have it back. But at least I have it for my records.

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[CANCERDOC]

I have mine in service at Costa Mesa right now and listed the rear clunk as an item. Will let you all know what they say.

My main issue to bring it in was the old car creak when starting and stopping, likely half shafts? So I figure, I'll add the clunk issue to the list to see what they say. Did a drive around with a tech and they heard the creaking immediately and was able to demonstrate the clunk a couple times.

 

[CANCERDOC]

Had my vehicle at Costa Mesa this week and reported the rear motor clunk. They did a diagnostic, noted that the rear motor needed calibration, which was performed, and it is smoother now, similar to pre 2024.51. You can still feel it engaging but it no longer has the abrupt shove. This seems to be something entirely software so I bet mobile service can take care of this.

 

[lslick23]

Had my vehicle at Costa Mesa this week and reported the rear motor clunk. They did a diagnostic, noted that the rear motor needed calibration, which was performed, and it is smoother now, similar to pre 2024.51. You can still feel it engaging but it no longer has the abrupt shove. This seems to be something entirely software so I bet mobile service can take care of this.

Have they said anything about the creaking? I have the same issue going on that’s gotten worse overtime and I have an appointment for it and wondering how long the fix is.

 

[Jonger1150]

Had my vehicle at Costa Mesa this week and reported the rear motor clunk. They did a diagnostic, noted that the rear motor needed calibration, which was performed, and it is smoother now, similar to pre 2024.51. You can still feel it engaging but it no longer has the abrupt shove. This seems to be something entirely software so I bet mobile service can take care of this.

I was hoping this would be changed with a software update and 2 of them have come and gone without a fix. Looks like I'm forced to waste some Rivian dollars on this. (Stock holder here)

 

[CANCERDOC]

Have they said anything about the creaking? I have the same issue going on that’s gotten worse overtime and I have an appointment for it and wondering how long the fix is.

Creaking was front halfshafts and they did a service campaign where they adding new ting washers and took everything apart and relubed everything. It was unclear whether they replaced the actual axles. The noise is gone, for now.

 

[lslick23]

Creaking was front halfshafts and they did a service campaign where they adding new ting washers and took everything apart and relubed everything. It was unclear whether they replaced the actual axles. The noise is gone, for now.

I have that problem on the front and rear, so good to hear they have a fix and hopefully it’s not a bandaid.

 

[2kwik4u]

I was pretty vocal in this thread early on. I'm not adding "rear end engagement" to the list of things to have Rivian service look at the next time it's in. While I can feel it most prominently on interstate driving, I don't get much on surface street driving under 55mph or so. Guessing I'm just not aggressive enough often enough, or the speed is low enough to keep it at bay. On the interstate though, it's gotten to be quite noticeable. Even had a guest rider the other day ask what it was. I suspect I'll be told it's "normal" when it goes in for service, but we'll see.

Curious if anyone has a favored "work around" for keeping AWD locked while driving.

• If I turn traction control down, it puts a warning in the instrument panel.
  • Not a fan of that.
  • Also, it turns traction control back on if Cruise or Driver+ is used. Which kind of defeats the purpose.
• If I use Snow mode, then inputs and regen are significantly muted and reduced.
  • Which leads to a less than desirable driving experience.

Is there another method available to "lock" AWD for normal daily driving that I haven't thought of?

 

[Frisbee]

R1T DM. I turn “Auto” off and TC to “Reduced.” No warning appears on the instrument panel. When I park the vehicle and return sometime later it is erratic. Sometimes auto is back on sometimes not. The reduced TC almost always needs to be reset. Annoying, but hopefully Rivian will in an update give us back the choice we previously had to not run in front drive conserve mode.

 

[JonS]

Since 2024.51.01 was released on Gen 1 Dual Motor performance, I have noticed that all purpose engages the rear Motor much more abruptly.

I'm trying to decipher whether I'm having an issue or not.

About 2 weeks ago just before the 2024.51.01 update, I had a turtle mode error and the rear Motor was disabled. I did a reset and it cleared the error and everything seemed to be OK. The update came out the next day, making it tough to pin this on software or timing.

I notice when on the highway at 60+ mph, when in all-purpose.... there is a bit of a thump when the rear Motor engages under higher throttle. I don't remember this before.

If I'm driving in all purpose and engage Snow Mode, the thump hits when the Motor engages. So it's clearly the engagement of the Motor. This all happened right around the update and that turtle mode/rear Motor disengagement.

Sound familiar to anyone else? Has anyone noticed a difference after the update? I posted a similar thread on this before but I didn't word it right or mention the Dual Motor.

My wife has a Gen1 PDM R1S which has these exact symptoms you have described. It seemed to start with the software update as you mentioned.

I’m going to raise a service ticket and see where we get to with it.

 

[s0ysauce]

IIRC disengaging auto remembers your setting for 4 hours. Any time after that and it goes back on. This is working as they intended. Someone correct me if I'm wrong please.

R1T DM. I turn “Auto” off and TC to “Reduced.” No warning appears on the instrument panel. When I park the vehicle and return sometime later it is erratic. Sometimes auto is back on sometimes not. The reduced TC almost always needs to be reset. Annoying, but hopefully Rivian will in an update give us back the choice we previously had to not run in front drive conserve mode.

 

[Frisbee]

Thanks for the input but while my DM R1T only has 7,000 miles I believe it has early stage dementia. Both its short term and long term memory are rather poor and it is not limited to the “Auto” function. Radio on/off settings are also erratic. I have tried to find a pattern (such as the four hours you mentioned) but have been unsuccessful so far. At the moment it is just an irritation which hopefully will be solved in a future update.

 

[2kwik4u]

Thought I would hop in here and add some new details to the discussion.

My truck has been getting progressively "worse" on the engagement. In particular under power when passing on the interstate. Sometimes it was bad enough to elicit a comment from the otherwise oblivious/non-caring wife of "What the heck was that?"

Well, we drove to VA/NC line from Buffalo over memorial Day weekend. It was getting worse the entire drive home......until.....we lost the rear drive unit about 150mi from home. Turtle mode on the screen. No more AWD. No more drive modes. Now more cruise or Driver+. Truck still maintained 70mph, but the front motor and rear moto both shot up in temperature to over 150deg in a matter of about 10min. Highest I've seen them yet. It got us home, but effeciency dropped to under 1.0 mi/kWh. Glad we had some extra electrons in reserve. Landed at home with 1mi remaining instead of the 40 we had planned.

The "good" news......I already had a service visit scheduled for this morning. On that service ticket was "rear motor engagement is absurdly poor"......At least it full on failed ahead of time, and they can replicate the issue. We'll see what they say once they have some time to diagnose it.

Final thought.....OMG....WHY, WHY is the loaner such a better vehicle than mine? Loaner is a Gen1 Quad R1S. It's quite, smooth, powerful, and comfortable. Mine (Gen1 R1T dual) is loud, clunky, slow, and generally drives like hot garbage. If every Rivian experience is like this, I can see why people love them, if they all drove like mine I can't understand why people would buy one. I'm completely flabbergasted by the difference, it's SOOOOO much better in the loaner.

 

[Mellowyellow]

I just had mine in for service and they told me that it was normal

 

[teartags]

Thought I would hop in here and add some new details to the discussion.

My truck has been getting progressively "worse" on the engagement. In particular under power when passing on the interstate. Sometimes it was bad enough to elicit a comment from the otherwise oblivious/non-caring wife of "What the heck was that?"

Well, we drove to VA/NC line from Buffalo over memorial Day weekend. It was getting worse the entire drive home......until.....we lost the rear drive unit about 150mi from home. Turtle mode on the screen. No more AWD. No more drive modes. Now more cruise or Driver+. Truck still maintained 70mph, but the front motor and rear moto both shot up in temperature to over 150deg in a matter of about 10min. Highest I've seen them yet. It got us home, but effeciency dropped to under 1.0 mi/kWh. Glad we had some extra electrons in reserve. Landed at home with 1mi remaining instead of the 40 we had planned.

The "good" news......I already had a service visit scheduled for this morning. On that service ticket was "rear motor engagement is absurdly poor"......At least it full on failed ahead of time, and they can replicate the issue. We'll see what they say once they have some time to diagnose it.

Final thought.....OMG....WHY, WHY is the loaner such a better vehicle than mine? Loaner is a Gen1 Quad R1S. It's quite, smooth, powerful, and comfortable. Mine (Gen1 R1T dual) is loud, clunky, slow, and generally drives like hot garbage. If every Rivian experience is like this, I can see why people love them, if they all drove like mine I can't understand why people would buy one. I'm completely flabbergasted by the difference, it's SOOOOO much better in the loaner.

On a road trip this weekend, I noticed that mine has also gotten worse. What started as "blip" has turned in to a full on "thunk". Makes me worried I'm doing some lasting damage.
Did your service appointment turn up anything?

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