Motor failure message

[Carscott]

https://www.rivianforums.com/forum/threads/poll-dual-vs-quad-motor-failure-replacement.40405/


Hi everyone. Please add your data to poll.

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[HaveBlue]

Had a similar error and the rear clutch position sensor needed calibration. If it doesn't engage fast enough when asked, it trips an error. When the car sleeps, the error clears until it happens again.

 

[Dave Bratton]

Final result!
Got my truck back exactly 1 week after it went to the service center.
They did replace the rear drive inverter with a new one. They also did the following:
1. Replaced the 12 volt batteries. Mine has 2.
2. Cleaned the charger pins and installed new seals.
3. Replaced auxiliary air compressor control panel.
4. Evacuated refrigerant and recharged due to overfill.
5. Added cable ties to the cowl harness.
6. Tightened hub to knuckle fasteners.
7. Did courtesy inspection.
Total cost = $0.
Work was done at the Groveport Ohio SC. They were great. Kept me informed and got the job done exactly when they said they would. I couldn't be happier.

 

[GoBlueR1T]

Final result!
Got my truck back exactly 1 week after it went to the service center.
They did replace the rear drive inverter with a new one. They also did the following:
1. Replaced the 12 volt batteries. Mine has 2.
2. Cleaned the charger pins and installed new seals.
3. Replaced auxiliary air compressor control panel.
4. Evacuated refrigerant and recharged due to overfill.
5. Added cable ties to the cowl harness.
6. Tightened hub to knuckle fasteners.
7. Did courtesy inspection.
Total cost = $0.
Work was done at the Groveport Ohio SC. They were great. Kept me informed and got the job done exactly when they said they would. I couldn't be happier.

Awesome to hear. I think service has gotten much better overall in the last year.

 

[KootenayEV]

Received my truck also in 1 week + 1 day. They had originally booked me in for a Thursday am, hoping to get me back on the road by end of day Friday. Reason for me to go was for "front drive unit, inverter" - they then opportunistically added my 12v battery replacement and check torque on hub to knuckles in 4 locations (all 4 axles presumably?). Unfortunately took them a bit longer than they expected, and luckily they had a loaner, so I went home and came back the following Friday. I asked them to check for any other issues, since I have a 5 week family towing road trip coming up mid-March. They advised a few other items needed to be done, so in the end it was better they had it for the week anyways!

1. I was intermittently receiving short-lived motor fault messages. Fix was to replace the front drive unit inverter, with a new part revision from my May '23 build. They have an internal 'node' that was found easily from the diagnostic logs which said this was the fix. Sounds like the seal failed, letting in some moisture that was causing intermittent short condition, exacerbated by cold weather.

2. Proactive replacement of 12v battery (my truck has 1)

3. Checked torque on knuckles, all were good.

4. Tech noticed right front axle seal leaking; replaced seal and topped up differential oil. (To my knowledge, this wasn't throwing codes, yet?)

5. Tech noticed both rear dampeners leaking oil; replaced both. Again new part revision.

All of the above covered under warranty.

6. Replace cabin air filter.

7. Replace windshield: once I found out I needed a trip to a SC, I contacted ICBC (Insurance Corp of BC) about a cracked windshield I had been waiting to repair. To my surprise, they got back to me fairly quickly and approved the request, though Rivian's usual shop rate is higher than they will pay out for, so be forewarned of this if you get your windshield done at a SC using ICBC.

8. Tech noticed brake pads worn. Replaced rotors and pads front and rear; also serviced the sliders. Once they had the calipers apart they found that the pads had worn quite unevenly; 1mm on the inside to 8mm left on the outside! My truck had 55,000km (~34k miles). This seemed pretty early, but I guess it is due to the pads being depressed unevenly. Apparently this can be common on EVs as the friction brakes aren't used much. My plan is to pay my local shop to inspect/service the brakes each spring when I get my winter tires off (we have liquid de-icer used here).

Total cost to me was $4200 CDN, of which ICBC will cover about $1800 for the windshield.

I also bought a set of Michelin Defender LTX M/S2 275/60/20 when I went back to grab the truck to save myself 7% tax! Those came to $1800 CDN. I had originally wanted the Goodyear Territory AT, but absolutely no one had them in stock, and often not even in their system. Oh well - I will end up with a quieter tire with higher efficiency, and realistically it should be fine for my use case. (My OEM Pirelli ATs wore very badly and were getting unbearably loud in the fall - putting on my studded tires was a relief! Best tire was at 5/32, worst was at 3/32", so I wasn't going to be winter legal in the states we are about to drive through in March, and they also wouldn't have lasted the ~6000-7000km trip we have planned and I didn't want to deal with replacing them mid-vacation.)

Lastly, the loaner was a dual motor max pack, Jan '24 build. Wow I'm happy I got the quad in the end! (I had been debating a DM Max instead - I was originally a Quad Max pre-order holder.) The DM was louder (a lot of gear noise), and the MP doesn't charge as fast as my Large Pack - it hardly hit 200kW - one session of 63.5 kWh in 33 min, 115 kW avg - whereas mine will reliably do >200 up to just shy of 50% SOC. On the way home, I picked up 34 kWh in 10 mins (204 kW avg), and another time 72 kWh in 25 mins (173 kW avg) - both starting at just under 20% SOC. Also - very noticeable difference in acceleration when I needed to punch it on Calgary freeways

Efficiency only slighter better for the DM - 3.57 km/kWh [2.23 mpk] vs 3.45 km/kWh [2.16 mpk] (fair amount of use of Conserve on mine for comparison purposes for this trip - I usually use AP, which uses 6% more energy at 110 km/h based on my previous testing - that would have been 3.26 km/kWh [2.04 mpk]). Speed was mostly 105 km/h [65 mph], with a short chunk of freeway at more like 115-120 km/h [72 - 75 mph]. Dry roads, ranging from 0 to 10C [32 to 50F], on my Nokian Hakka studded LT3 (LT275/65/20). Side-note: I prefer the approach Rivian took on the QM Large with a more realistic Rated-Range; I obtained 91 to 98% (depending on if you compare to RR for AP or Conserve), whereas the DM only hit 84% of Rated Range!

All work done at Calgary SC - thanks to Connor, Shawn and team!

 

[HaveBlue]

Glad you got your issues sorted. Looks like they fully went through things.

I just looked and my lifetime average on the max pack is 340 miles of actual range down from a rated 380 with my tires. That includes city, highway, towing and off-road. That's almost within 10% of EPA.

 

[KootenayEV]

Glad you got your issues sorted. Looks like they fully went through things.

I just looked and my lifetime average on the max pack is 340 miles of actual range down from a rated 380 with my tires. That includes city, highway, towing and off-road. That's almost within 10% of EPA.

Pretty good! It will vary for everyone of course, based on climate and towing/not towing as my guesses for cause of biggest variance. My lifetime average is only 85% of EPA in AP (2.97 vs 3.5 km/kWh). That includes a fair amount of winter driving (and kids sitting in the truck "idling"), and 5,500 km of towing (10% of total mileage).

 

[HaveBlue]

Yea that cold weather and towing hits hard. I'm in Southern California and only spend a hand full of days in cold weather.

 

[JeremyMKE]

I had Motor and Drive failure similar to you all last week. The truck sat at the airport for 4 days in 20 deg F temps.
To be clear I go to the airport ALOT and in just about every temp condition and I believe I was the first to discover the seat sensor issue that ended up with a recall and consequently that if you have your passenger seatbelt buckled your truck will drain in a dramatic fashion.

Truck was not plugged in but had +70%

Threw these errors and limited to 42 MPH about 7 minutes after leaving my parking spot, while I was on the freeway. I got off and limped home.

Service had me do a reset and no problems since but I am strongly concerned....

Rivian has an open ticket but is not recommending bringing it in. I dont like this, at a minimum I would like a follow up with an analysis of my logs...

A glitch just isnt satisfying. Could it be a frozen sensor? Perhaps. Could be a lot of things but this is the first time I have started considering another brand. Its not like I havent had other major issues but I could understand why they happened.

 

[GoBlueR1T]

I had Motor and Drive failure similar to you all last week. The truck sat at the airport for 4 days in 20 deg F temps.
To be clear I go to the airport ALOT and in just about every temp condition and I believe I was the first to discover the seat sensor issue that ended up with a recall and consequently that if you have your passenger seatbelt buckled your truck will drain in a dramatic fashion.

Truck was not plugged in but had +70%

Threw these errors and limited to 42 MPH about 7 minutes after leaving my parking spot, while I was on the freeway. I got off and limped home.

Service had me do a reset and no problems since but I am strongly concerned....

Rivian has an open ticket but is not recommending bringing it in. I dont like this, at a minimum I would like a follow up with an analysis of my logs...

A glitch just isnt satisfying. Could it be a frozen sensor? Perhaps. Could be a lot of things but this is the first time I have started considering another brand. Its not like I havent had other major issues but I could understand why they happened.

I think they told me the same thing the first time I got the error, but after it recurred the next day, they escalated and came and picked up my truck. Ended up replacing the front drive unit. Hopefully yours isn't that bad.

 

[KootenayEV]

I had Motor and Drive failure similar to you all last week. The truck sat at the airport for 4 days in 20 deg F temps.
To be clear I go to the airport ALOT and in just about every temp condition and I believe I was the first to discover the seat sensor issue that ended up with a recall and consequently that if you have your passenger seatbelt buckled your truck will drain in a dramatic fashion.

Truck was not plugged in but had +70%

Threw these errors and limited to 42 MPH about 7 minutes after leaving my parking spot, while I was on the freeway. I got off and limped home.

Service had me do a reset and no problems since but I am strongly concerned....

Rivian has an open ticket but is not recommending bringing it in. I dont like this, at a minimum I would like a follow up with an analysis of my logs...

A glitch just isnt satisfying. Could it be a frozen sensor? Perhaps. Could be a lot of things but this is the first time I have started considering another brand. Its not like I havent had other major issues but I could understand why they happened.

They said something similar for me at first, but escalated it quickly once I'd seen it a few times.

 

[JeremyMKE]

I think they told me the same thing the first time I got the error, but after it recurred the next day, they escalated and came and picked up my truck. Ended up replacing the front drive unit. Hopefully yours isn't that bad.

So far it has not resurfaced. Driven about 200 miles since then BUT my Garage is heated. I guess I could park outside and try to replicate with a deep freeze

 

[Brian-MS90D]

So far it has not resurfaced. Driven about 200 miles since then BUT my Garage is heated. I guess I could park outside and try to replicate with a deep freeze

Replicating it is probably not related the outside cold temperature and probably more related to whether the car goes to sleep. Let it sit unplugged, gear guard off, do not load your phone app, etc etc for at least 1 hour. Maybe you already did this, but I say this because sometimes these type of alarms can be "avoided" by the vehicle never going into the deep sleep.

 

[KootenayEV]

For mine it was temperature/humidity related - the failed seal allowed moisture into the inverter, which seems to have occasionally condensed onto something important on the inverter controller. Lower temp = more likelihood condensation.

 

[MountainBikeDude]

For mine it was temperature/humidity related - the failed seal allowed moisture into the inverter, which seems to have occasionally condensed onto something important on the inverter controller. Lower temp = more likelihood condensation.

So in your cas was it intermittent failure, or once it finally condensed and settled on the inverter, that was it, the main board was toast?

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