Rivian R1 LFP shutdowns under 20% linked to firmware bug
Owners report Rivian R1 LFP shutoffs as SoC drops from 15–4% to zero; firmware 2025.38 misreads charge. Rivian says update 2025.42 in two weeks will fix it.
2025-11-18T05:12:45+03:00
2025-11-18T05:12:45+03:00
2025-11-18T05:12:45+03:00
Rivian R1 owners with the new LFP battery are running into a serious issue: once the charge dips below 20%, the vehicle can shut down without warning. Drivers report the state of charge (SoC) plunging from 15–4% to zero in a matter of seconds, leaving the car stalled in live traffic. Range buffers are meant to prevent exactly this kind of cliff; when they vanish, trip planning turns into guesswork.At first, many chalked it up to the quirks of LFP chemistry, which is known to benefit from frequent calibration and full charges. But even with regular 100% charge cycles, the behavior remains erratic. Blogger Kyle Conner noted that his R1T powered off at 4% shortly after a fresh charge, which points beyond a routine calibration hiccup.Dozens of similar accounts are circulating on social media: for some, the remaining charge tumbled from 15% to zero within minutes, and the vehicle coasted to a halt just a couple of kilometers shy of a charger. Adding to the headache, a full discharge can also take out the 12‑volt battery, leaving owners to cover towing and a replacement.Rivian has acknowledged the problem. All signs indicate a bug in firmware 2025.38 that miscalculates the battery’s state of charge. The company is preparing a fix in update 2025.42, slated to arrive within two weeks, which should restore proper behavior for the LFP packs.
Rivian R1, Rivian R1T, LFP battery, firmware 2025.38, update 2025.42, state of charge, SoC bug, EV shutdown, range buffer, 12-volt battery, towing, bug fix, over-the-air update
Owners report Rivian R1 LFP shutoffs as SoC drops from 15–4% to zero; firmware 2025.38 misreads charge. Rivian says update 2025.42 in two weeks will fix it.
Michael Powers, Editor
Rivian R1 owners with the new LFP battery are running into a serious issue: once the charge dips below 20%, the vehicle can shut down without warning. Drivers report the state of charge (SoC) plunging from 15–4% to zero in a matter of seconds, leaving the car stalled in live traffic. Range buffers are meant to prevent exactly this kind of cliff; when they vanish, trip planning turns into guesswork.
At first, many chalked it up to the quirks of LFP chemistry, which is known to benefit from frequent calibration and full charges. But even with regular 100% charge cycles, the behavior remains erratic. Blogger Kyle Conner noted that his R1T powered off at 4% shortly after a fresh charge, which points beyond a routine calibration hiccup.
Dozens of similar accounts are circulating on social media: for some, the remaining charge tumbled from 15% to zero within minutes, and the vehicle coasted to a halt just a couple of kilometers shy of a charger. Adding to the headache, a full discharge can also take out the 12‑volt battery, leaving owners to cover towing and a replacement.
Rivian has acknowledged the problem. All signs indicate a bug in firmware 2025.38 that miscalculates the battery’s state of charge. The company is preparing a fix in update 2025.42, slated to arrive within two weeks, which should restore proper behavior for the LFP packs.
