2023 Nissan Ariya

The contact owns a 2023 Nissan Ariya. The contact stated that while driving 75 MPH and attempting to accelerate, the vehicle failed to respond and lost automotive power. There was no warning light illuminated. The contact pulled over to the side of the road, restarted the vehicle, and continued driving. The vehicle was taken to a dealer to be diagnosed; however, the dealer was unable to duplicate the failure. The vehicle was not repaired. The contact associated the failure with NHTSA Campaign Number: 23V657000 (ELECTRICAL SYSTEM). The manufacturer was notified of the failure. The failure mileage was 21,000.

The vehicle’s EV system and related electrical components appear to be malfunctioning, causing repeated “EV System Off” error messages and rendering the vehicle inoperable. The vehicle is currently at the dealership and available for inspection upon request. The defect created a significant safety risk because the vehicle became unreliable and could unexpectedly fail to operate, leaving me stranded and without dependable transportation. This placed both myself and others at risk, especially if the failure occurred while driving or in traffic. Yes, the issue has been repeatedly reproduced and confirmed by the Nissan dealership. The vehicle has been towed to the dealership approximately five times for the same or substantially similar issue, and multiple repair attempts and part replacements have been made. The vehicle has been inspected by the Nissan dealership and Nissan Consumer Affairs has been notified on multiple occasions. Repairs and diagnostics were performed between March 20, 2026 and April 10, 2026, and the same issue reoccurred again on May 19, 2026. Yes, warning messages appeared prior to the failures, specifically the “EV System Off” warning message. These symptoms first began prior to the initial repair period in March 2026 and have continued to reoccur despite repair attempts.

At low speeds after startup, the car automatically shifts from drive into neutral. The car will be locked in neutral, not letting you put it in park, drive, or reverse. To get the car back into drive, you must come to a complete stop, turn the car off, back on, and floor the accelerator. Failure to floor the accelerator will lead to the car getting stuck in neutral again. I have pulled out into traffic on numerous occasions and had the car die in the middle of the road, forcing me to come to a stop and fully turn it back on, sometimes multiple times. No warning messages appear.

DEFECTIVE COMPONENT & FAILURE MODE The vehicle suffered a failure in the 12-volt battery system, potentially involving the DC-to-DC Converter or the associated charging logic. This malfunction caused the lead-acid 12V battery to be severely overcharged and boiled while the vehicle was plugged in and parked. CATASTROPHIC SAFETY HAZARD The failure resulted in the release of highly toxic and flammable gases into an enclosed residential space (my garage), posing an immediate, life-threatening risk: TOXIC GAS POISONING: The boiling battery released a massive amount of Hydrogen Sulfide gas, identified by the distinctive, strong rotten-egg odor. H2S is a cellular asphyxiant and is fatal at high concentrations. EXPLOSION/FIRE RISK: The boiling battery also released highly flammable Hydrogen H2 gas, creating an explosion hazard inside the closed structure of the home. CHRONOLOGY OF EVENTS Tues, 11/11/25 (approx. 5:00 PM): Noticed strong rotten-egg smell in the garage while the vehicle was charging. 5:30 PM: Called local gas company due to fear of a gas leak. 6:30 PM: The smell was still strongly detectable, indicating dangerous lingering concentrations. Suspecting the car, immediately unplugged. 7:00 PM: Identified the car as the source and moved the immobilized vehicle outside. 9:05 PM: Contacted Poison Control due to chemical inhalation/exposure risk. (immediate / risk of delayed symptoms). MANUFACTURER CONTACT & CURRENT STATUS Manufacturer Contact: I have notified Nissan Consumer Affairs of the safety hazard and received Case Number: 55990119. Current Status: The vehicle is currently immobilized and will be sent to dealership for repair. The defective components (battery and converter) are intact. Medical Status: I sought medical consultation and am monitoring for delayed neurological or respiratory effects (pulmonary edema) known to occur after H2S exposure.

I had just left the [XXX] on the [XXX] when our Ariya suddenly lost power at highway speeds. It felt like a very dangerous situation, because there are very long distances between exits in this area, and the shoulder is somewhat narrow in spots. The high voltage battery had been DC fast charged to 95% at said service area minutes earlier. But the display suddenly went to 0%, turtle mode appeared, and the message “Warning Service EV System” showed on the display. For some reason, the windshield wipers also activated momentarily, despite it being a clear summer day. It was not possible to maintain speed, as the car had a power limit of about 10%. I was fortunate that we were able to limp the ~10 miles to the next exit behind a very slow RV. However, the car slowed down dramatically when going uphill. It was a very white knuckle experience. Once we made it off [XXX], I was able to slowly coast into a gas station parking lot and collect myself. I tried turning off the car and turning it back on, but the message did not go away. Since I also carry tools when traveling, I then tried disconnecting the 12 volt battery for a minute and reconnecting it. Fortunately, that made the error go away. Having a suspicion that the 12 volt battery could be at fault, I replaced the OEM flooded lead acid battery with an AGM battery at my own expensive. The next day, I took the vehicle to Poughkeepsie Nissan in Wappingers Falls, NY to be looked at. The write up is included with the submission. The dealer was not able to duplicate the issue, but they did see error codes stored within the car’s computers. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

This is the fourth time this has happened to us during normal driving. I pulled out onto a highway and suddenly with no prior warning, the car lost all power and went into what I can only describe as a "limp mode" and wouldn't go above 5 mph. I had to quickly pull off the road as traffic was catching up at highway speed. The dashboard flashed "Malfunction, see owners manual" and we had an orange triangle with an exclamation point as well as a circle with exclamation point with a wrench next to it. The traction control light and car with exclamation point were also lit up. After limping to a cross road we turned the car completely off for 5 min and when we restarted it, it worked normally. The same thing happened July 25, 2024 and I had the car in the dealership. They said they could not recreate the issue even though I showed them video of the dashboard acting strangely. The service manager said he believed something had blocked the front bumper sensor and that it should be fine now. We have already performed both software updated recalls and since then, it has happened to us twice more. The battery was at around 80%, had just been driven by my wife for around 30 min with no issues, was turned off in the driveway for about 15 min and then we left again. It was extremely cold during this issue (temps around 10 degrees F), but this has also happened during normal temps in the summer and fall.

the car lost power in the middle of the freeway -and decelerated; in a highway with speed limit of 65mph while driving in I-680, all of a sudden the car slowed down from 65mph all the way to less than 20mph - displaying "power reduced - 0% battery" ; even it was recently fully charged - I was able to drive the car - back at 20mph speed - went straight to the Nissan dealer/service - where I left my car - and. was given a loaner car. the warning lamp ONLY appeared as soon as the car decelerated / slowed down