Nissan
Ariya

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.

The contact owns a 2023 Nissan Ariya. The contact stated that while driving at an undisclosed speed, there was a loud thud coming from the vehicle. There was no warning light illuminated. The contact stated that while attempting to inspect the vehicle, the vehicle restarted while in park, and unexpectedly rolled away. The contact was able to quickly re-enter the vehicle and stop the vehicle. The vehicle was towed to the dealer, where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was opened. The approximate failure mileage was 77,000.

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)

my car isnt listed for a current recall but should considering the software update does not match. Recall Reference: P4A30, P4A31 should have included my call as i dont have that update. Update 283C36PA5E is before the one shown in the recall.

The contact owned a 2023 Nissan Ariya. The contact stated that, while pulling out of an end parking space, the driver made a third-point turn. While reversing, the vehicle suddenly stopped. The corner of the vehicle hit a pillar. The driver looked into the camera. There were no objects in the camera view. There was no alert activated. The contact pulled back into the parking spot with her foot on the accelerator pedal. The vehicle suddenly accelerated to 40 MPH, jumped the curb, hit a young tree, a dumpster, and an electrical box. There were no warning lights illuminated. While exiting the vehicle, there was an abnormally loud revving sound. Prior to the failure, the vehicle failed to shift into reverse. There was a symbol of two vehicles. The vehicle restarted and worked as designed. There were no reported injuries, airbags did not deploy, fire or police report was filed. The vehicle was towed to a tow lot. The vehicle was deemed a total loss. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but assistance was provided. The failure mileage was 59,000.

The contact owns a 2023 Nissan Ariya. The contact stated while driving 35 MPH in the snowy weather, while depressing the accelerator pedal driving up a mountain, the traction control failed to operate as designed. The contact stated that the vehicle pulled into left lane. The contact was able to get down the mountain and the warning message stopped illuminating. The message that the front stability was disabled was displayed. The contact stated that the dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the result was unknown. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The approximate failure mileage was 14,000.

Vehicle tires last less than 10k miles before tread depth is unsafe. I have complained to Nissan and they take no responsibility despite being the company that selected these tires, and there are multiple instances of failure for this vehicle. I should not have to buy new tires on a $60k car with less than 10k miles on it.

I am writing to formally report a series of safety concerns I have encountered with my Nissan vehicle. These issues have been brought to the attention of both the service department and Nissan directly, but they remain unresolved. I believe these defects pose significant safety risks, not only for me as the driver but also for others on the road. Below is a detailed account of the problems: Spontaneous Locking and Unlocking: The vehicle intermittently locks and unlocks itself without any input from me. This issue compromises security and creates a potential safety hazard while driving or when the vehicle is parked. Malfunctioning Steering Wheel Controls: The steering wheel controls often become unresponsive and freeze, particularly during the use of cruise control. This prevents me from canceling cruise control unless I press the brakes abruptly, which could lead to unsafe situations on the road. Melting Dashboard Emitting Toxic Vapors: The dashboard of the vehicle begins to melt during driving, releasing vapors that are extremely toxic and irritating. This is a serious health concern, as the vapors affect the air quality within the vehicle and could impair my ability to operate the vehicle safely. Inadequate Door Seals: The door seals are unusually thin and fragile, causing them to break easily. This not only impacts the structural integrity of the vehicle but also creates potential exposure to external elements, affecting the vehicle's safety and functionality. Given the severity of these issues, I request an investigation to determine if these defects are common among similar vehicles and if they warrant a recall. The safety of myself, my passengers, and others on the road is at risk due to these defects, and I believe action is necessary to prevent accidents or injuries. Please feel free to contact me if further details or documentation are required. I appreciate your attention to this matter and look forward to your response.