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.

I am filing a safety complaint regarding my 2023 Nissan Ariya involving an apparent failure of the 12-volt battery and/or electrical system. While parked overnight in my driveway, powered off, and not plugged in nor charging, the front battery/engine compartment began sizzling, overheating, and producing smoke. The heat caused internal damage and disabled the vehicle. This created a serious fire risk because the incident occurred at my home while the vehicle was unattended and inactive and it happened without any earlier signs or warning. My battery health was checked by the repair shop at the dealership within the last 5 months. The malfunction could have caused a vehicle or house fire and endangered nearby occupants and property. The vehicle is currently at King Windward Nissan in Hawai‘i for inspection and repairs, and a Nissan Consumer Affairs case has been opened. Anecdotally, I have heard from 4 other Nissan Ariya owners in Hawai'i who have experienced similar battery failures with their Nissan Ariyas within the first two-years of purchase.

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 approximately 18,500 miles, my 2023 Nissan Ariya experienced a brake system failure while driving. The vehicle exhibited abnormal braking behavior and reduced braking performance, creating a serious safety concern. I was able to safely stop the vehicle, but the failure could have resulted in an accident. The vehicle was taken to a Nissan dealership for inspection. The diagnosis revealed severe and premature wear of the rear brake pads and significant damage to the rear rotors. The dealership also recommended replacement of the entire rear brake assemblies, not just standard wear components. The total repair estimate is approximately $3,800. Safety Concern: This failure occurred at very low mileage. In an electric vehicle with regenerative braking, brake components should last significantly longer under normal conditions. The extent of damage and need for full brake assembly replacement suggests a potential mechanical or electronic defect, such as a caliper malfunction or braking system issue. This was not normal wear and tear. The failure occurred during operation and posed a direct safety risk due to compromised braking ability. Manufacturer Response: The dealership has indicated the issue may not be covered under warranty, classifying it as wear-related. However, the severity and early failure strongly indicate an underlying defect rather than routine wear. I have contacted Nissan Corporate claims for further resolution. When visually inspecting the car the rotors were irregularly worn and the brake lines had burst spilling break fluid all over the rear innner tire .

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.

The contact owns a 2023 Nissan Ariya. The contact stated that while driving approximately 40 MPH, the vehicle unexpectedly lost motive power. The contact became aware of smoke coming from the engine compartment. There was no warning light illuminated. The vehicle was towed to an independent mechanic, where it was diagnosed that oil was leaking from the vehicle, causing the engine to fail. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact later went to the dealer; however, the vehicle was not taken to the dealer for a diagnostic test. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 60,000.

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.