2026 Rivian R1S

While I was traveling, I suddenly got a brake light fault, turn signal fault, and front camera fault warning messages that appeared on the computer. Rear driver's side tail light/turn signal light stopped functioning and the rest of the brake lights are stuck on, including the rear third tail light while driving and when vehicle is locked/idle. Rivian had me perform soft and hard resets, but that did not solve these problems. Rivian states they are unable to assist me further until I drive it to a service center located near my home.

The contact owns a 2026 Rivian R1S. The contact stated that while driving at various speeds, the GPS feature on the center digital screen failed to provide the accurate miles per hour traveled as designed. No warning light was illuminated. The vehicle was taken to a local dealer where it was diagnosed, and the contact was advised that the GPS feature was delayed by approximately 2 MPH. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 500.

Within 48 hours of picking up my new 2026 Rivian R1S Dual Standard, I experienced a power steering fault while on a public roadway to where the vehicle entered a crawl mode and the power steering stopped working. The car was not steerable. I spent an hour on the phone with Rivian emergency roadside support and they had me perform a reset of the vehicle which restored the steering. However, it was still recommended by roadside service that the vehicle be looked at by the service team so it was towed to Gaithersburg service center. The problem was later identified in the system logs as a known firmware condition that is currently under investigation with no permanent fix at this time. There were no warnings or indication of this issue prior to it occurring. The issue has not happened again since it was at the service center.

SUPPLEMENTAL COMPLAINT — This filing supplements VOQ No. XXX filed XXX for the same vehicle and incident. The original complaint contained factual inaccuracies that this filing corrects. PROPULSION FAILURE AT HIGHWAY SPEED — KNOWN DEFECT — NHTSA MFR COMMS 11026123 & 11026124 VEHICLE: 2026 Rivian R1S Dual Standard, VIN [XXX], LFP battery. Delivered XXX. ~700 miles at incident. INCIDENT XXX: Navigation showed 8% SOC buffer on arrival at destination 5 miles away — active system assurance of sufficient range. Simultaneous audible alarm and dashboard warning then fired with approximately 15-20 seconds to act at ~60 mph on busy [XXX]. Emergency pull-over executed under extreme time pressure. Complete propulsion loss on highway shoulder. ~80°F. Rivian Roadside quoted 3-hour response; independently hired private tow. Approximately 45 minutes after stall, 12V battery died and hazard lights failed — disabled vehicle on live busy interstate shoulder with no hazard lights in 80° heat. Zero residual power. Towed to West Gardiner Service Plaza. 4 hours on highway shoulder, 3 hours at rest area. $225 out-of-pocket (tow + Lyft). DEFECT: Rivian Hudson NH service (WO-XXX, INV_XXX) confirmed 13% HV battery cell capacity imbalance — dashboard SOC does not reflect actual cell capacity. Factory calibration defect. Firmware update only; HV hardware NOT replaced. Defect unresolved. PRIOR NHTSA FILINGS: Before my May 2026 delivery Rivian filed mandatory EWR communications: - Mfr Comm XXX: warned owners of fast range drop below 20% SOC, instructed to stay above 20%. - Mfr Comm XXX (Nov 24 2025): described progressive inaccuracy below 20% SOC. Component: FUEL/PROPULSION SYSTEM. Both on NHTSA 2026 R1S vehicle page. NON-DISCLOSURE: Neither filing disclosed at sale/delivery May 22 2026. Calibration-complete confirmation never sent to this VIN. BBB Auto Line Case XXX active. VOQ XXX filed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

PROPULSION FAILURE AT HIGHWAY SPEED — KNOWN DEFECT — NHTSA MFR COMMS XXX & XXX VEHICLE: 2026 Rivian R1S Dual Standard, VIN [XXX], LFP battery. Delivered XXX. 702 miles at incident. INCIDENT XXX: Complete unwarned propulsion failure on [XXX] at highway speed. Dashboard showed 8% SOC immediately before failure — no warning, no alert. Vehicle lost all propulsion 5 miles from nearest charger. Stranded 7 hours. $225 out-of-pocket towing/transport costs. DEFECT: Rivian Hudson NH service (WO-000002294461, INV_20260608-150458) confirmed 13% HV battery cell capacity imbalance via diagnostics — dashboard SOC reading does not reflect actual cell capacity. Factory pre-delivery calibration defect. Firmware update performed; HV battery hardware NOT replaced. Defect unresolved. RIVIAN'S PRIOR NHTSA FILINGS: Before my May 2026 delivery, Rivian filed mandatory EWR communications acknowledging this exact defect: - Mfr Comm 11026123: SMS warning owners range "will drop fast below 20% SOC" and to "stay above 20% SOC until issue resolved." - Mfr Comm XXX (112425_SOCImbalance_Email, Nov 24 2025): Email describing progressive range inaccuracy below 20% SOC. Component: FUEL/PROPULSION SYSTEM. Both appear on NHTSA 2026 R1S vehicle page. NON-DISCLOSURE: Neither communication was disclosed at sale (May 18) or delivery (May 22, 2026). Rivian sold this vehicle with a known active propulsion defect without informing me. Calibration-complete confirmation was never sent to this VIN. REQUEST: I ask ODI to assess whether this constitutes a safety defect requiring recall under 49 USC 30118, and whether Rivian's continued sale of LFP vehicles after these filings without disclosing the 20% SOC limitation warrants investigation. BBB Auto Line Case XXX active. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Driver was making a left hand turn and as the turn was initiated the driver had no control of the vehicle. The vehicle system took over driving, causing substantial damage to the vehicle. Weeks leading up to the incident, the display and certain systems were not responding or provided errors. Following a reset each time, the vehicle would be operational.

Summary of the problem: The rear liftgate on my Rivian failed to detect an obstruction while closing and continued to close despite contact with a person. What happened: While the rear liftgate was automatically closing, I was unaware it was coming down and walked into it. The liftgate made contact with my upper body/face and did not stop or reverse as expected. Instead, it continued closing and forced me to the ground. Safety issue: The liftgate’s safety sensor failed to detect a human obstruction, creating a serious risk of injury. This is especially dangerous for children or shorter individuals who may be struck in the head or face. Injuries: I sustained bruising to my face and was knocked to the ground as a result of the liftgate continuing to close after impact. Why this is dangerous: A properly functioning power liftgate should stop and reverse when it encounters resistance. This system failed entirely, posing a significant safety hazard. There were no warnings or components that alerted before or after it failed to sense.

I have had siginificant issues with my new 2026 rivian R1S specifically based around two key areas: 1. inaccurate battery range reporting/capacity below 20% charge 2. inaccurate mapbox navigation. Those two issues combine to create a dangerous situation in extreme conditions for a vehicle specifically designed and marketed for off-road adventure (snow, rain, below freezing temperatures) and for large capacity (7 passengers). These two issues have left me and my family stranded three different times in remote locations in spite of our best efforts to keep the vehicle well charged and cross referencing navigation with other apps. I have taken the vehicle to Rivian service twice already and I was assured that the software update 38.30, but that is not the case. This left me stranded in Lone Pine, California where I had to abandon the vehicle and have it towed back to the Burbank service center and again near Mt. Shasta, California. Both were in December 2025, in sub-freezing conditions at night after repeated charging attempts. This created additional issues where the 12V battery charge ran down, the vehicle couldn’t get into Neutral to be towed and in all cases, Rivian roadside assistance was not able help beyond scheduling a service appointment.