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Year and a half old R1S full battery swap (happy ending)

Angrysoundguy

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Hi everyone,

This is my first post, but I’ve been lurking here for a few years. I leased a Gen 1 R1S Quad in June 2024, and I absolutely love it — it’s the best vehicle I’ve ever been in.

I picked up my R1S in Gaithersburg, MD. To break it in, I decided to take a drive — first to Gettysburg, then down to Front Royal to test out the RAN.

After unplugging from the charger and shifting into reverse, I suddenly got a battery fault warning, and the car went into turtle mode. I called Rivian Service, and they suggested a full reset. No luck. Since it was a Saturday, they couldn’t get me in until Monday. They asked if I felt comfortable driving it — I did — so I drove about 50 miles home. The car could still reach highway speeds, but power was reduced. Not a great feeling for day one!

The next day, I got back in the car and the fault had cleared itself, so I canceled my service appointment.

Over the next year, the same battery fault appeared a few more times, but each time a reset fixed it — until mid-September 2025. This time, nothing worked: not a reset, not waiting it out, not even a software update.

On September 28th, I opened the Rivian app to schedule service. The earliest appointment in Gaithersburg was December 15th, so I checked the new Chantilly Service Center, which had an opening on October 24th. I booked it.

A few hours later, Chantilly called and asked if I could bring the car in the next day since they wanted to inspect issues like this ASAP. I dropped it off on October 1st. While I waited for a rental car, they even gave me a tour of their brand-new, two-week-old facility. My rental was ready within 20 minutes.

Two days later, I swapped the rental for a loaner R1S Tri — fun to compare the two generations. The next day, the service team called: it was confirmed to be a high-voltage battery fault, requiring a full battery replacement.

My service rep mentioned that in two years, they’d only seen two other full battery swaps. Rivian shipped a new battery from Normal, but there were some shipping delays and technician changes. Finally, on October 15th, I got the call that my R1S was ready, and I picked it up the next day. This was all covered under warranty.

Throughout the process, the Chantilly Service Center was fantastic. They reached out every couple of days with updates, checked if I had questions, and made sure everything went smoothly.

In the end, this was as good an experience as I could have hoped for — it actually made me more confident in Rivian as a company and even more in love with my R1S.
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DuncIT

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Sucks that it happened, but wonderful that they were able to resolve it. Unfortunately, it's just basic statistics - there has to be a portion of the population that gets a bad unit.
 

CANCERDOC

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It is nice to read a story where the service issue was resolved.

Far too often we hear complaints of vehicle issues where the OP gives a one sided story with no technical details, no attempt to do the usual soft or hard resets, make a service appt, or otherwise try to obtain help from Rivian for their vehicle. Your story is an example of how the service experience should work, and reflects Rivian's continuous improvement.
 
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Angrysoundguy

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It is nice to read a story where the service issue was resolved.

Far too often we hear complaints of vehicle issues where the OP gives a one sided story with no technical details, no attempt to do the usual soft or hard resets, make a service appt, or otherwise try to obtain help from Rivian for their vehicle. Your story is an example of how the service experience should work, and reflects Rivian's continuous improvement.
That is exactly why I wanted to post my experience. I wanted to show the steps of my issue and what Rivian did to fix them.
 

COdogman

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Glad they took good care of you.

I also had my HV battery fail at about 9 months of ownership. Denver SC said it is pretty rare, but it happens. They handled it like pros and had me back in my truck in 5 days (most of that was waiting for the new battery to arrive). Other than the 2 regular maintenance visits that is still the only service appt I have required in over 2 years.
 

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madhat

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Glad they took good care of you.

I also had my HV battery fail at about 9 months of ownership. Denver SC said it is pretty rare, but it happens. They handled it like pros and had me back in my truck in 5 days (most of that was waiting for the new battery to arrive). Other than the 2 regular maintenance visits that is still the only service appt I have required in over 2 years.
Are they able to remove cells from the bottom or do they have to strip the interior, if you know?
 

COdogman

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Are they able to remove cells from the bottom or do they have to strip the interior, if you know?
I'm not sure of the whole process, but when I got my truck back they had moved around all the stuff I had in my back seat, like a dog hammock, trash can, etc. so I assumed they did have to access something through the cab. There were no other obvious signs they had disassembled the interior though...
 

Beer Traveler

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Similar story here. I had my 2024 R1S for a little over a year when Rivian contacted me letting me know that the 12v battery needed to be replaced. After scheduling the appointment, they contacted me again and said the high voltage pack would also need to be replaced at the same time. These diagnostics were done remotely by Rivian apparently, as I had no indication that the 12v battery was having an issue. The only time there was an issue with the high voltage pack was after one DCFC charging session (the fault was cleared with a hard reset and only happened the one time).

The Boise service center did a fantastic job! I highly recommend them.
 

pippo

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My 2023 R1T showed a battery fault last month when I was on the freeway, and the driving speed was limited to 43mph. I had to exit the freeway and perform a hard reset to clear the warning.
 
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Angrysoundguy

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I'm not sure of the whole process, but when I got my truck back they had moved around all the stuff I had in my back seat, like a dog hammock, trash can, etc. so I assumed they did have to access something through the cab. There were no other obvious signs they had disassembled the interior though...
They had to ship in a completely new battery pack, which also required stamping the VIN on the battery to match the R1S. They have to remove the seats to get to some of the bolts that hold in the battery pack.
 

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Rivian Owner

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Similar story here. I had my 2024 R1S for a little over a year when Rivian contacted me letting me know that the 12v battery needed to be replaced. After scheduling the appointment, they contacted me again and said the high voltage pack would also need to be replaced at the same time. These diagnostics were done remotely by Rivian apparently, as I had no indication that the 12v battery was having an issue. The only time there was an issue with the high voltage pack was after one DCFC charging session (the fault was cleared with a hard reset and only happened the one time).

The Boise service center did a fantastic job! I highly recommend them.
Yes the Boise SC is great. They've always been very helpful. They just replaced my windshield, it looks great, and they got it done a lot faster than what they promised. Drew and his crew are true professionals.
 

Beer Traveler

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Yes the Boise SC is great. They've always been very helpful. They just replaced my windshield, it looks great, and they got it done a lot faster than what they promised. Drew and his crew are true professionals.
I absolutely agree! Drew and his team are fantastic.
 

Schroederhc

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Awesome!
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