Certain 2019-2020 Nissan Leaf vehicles, specifically those equipped with quick charge ports for Level 3 charging using the CHAdeMO connector, are facing a potential issue where the battery could overheat during quick charging. This issue is serious, as it significantly raises the risk of a vehicle fire, which could lead to injury or property damage. The affected LEAF models were produced at Nissan’s Smyrna, Tennessee plant between August 29, 2018, and November 3, 2020. Nissan has identified this issue through their production records, confirming that it is limited to these specific Model Year 2019-2020 LEAF vehicles. Importantly, no other Nissan or INFINITI vehicles are known to be impacted by this defect, offering some reassurance to owners of other Nissan models.
Nissan is actively investigating the cause of this issue. Preliminary findings suggest that the problem stems from excessive lithium deposits forming inside the lithium-ion battery cells of these vehicles. These deposits increase the electrical resistance within the battery, which can cause fluctuations in the battery’s state of charge. This elevated resistance becomes particularly problematic during Level 3 quick charging, as it may result in the battery heating up more rapidly than intended. If the charging session continues under these conditions, the risk of a battery fire is significantly heightened, posing a serious safety concern.
Drivers may notice several warning signs during Level 3 charging that indicate something is wrong. These include the presence of smoke, unusual noises, interrupted charging sessions, or strange thermal odors emanating from the vehicle’s battery compartment. If any of these signs are observed, Nissan strongly advises stopping the charging process immediately and avoiding Level 3 charging altogether until the problem can be resolved.
Nissan is developing a solution for this issue in the form of a software update for the affected vehicles. Once available, this software update will be installed by dealers and is designed to correct the problem by managing the battery’s charging process more effectively. Nissan is taking steps to notify affected vehicle owners. Interim letters, alerting them to the safety risk, are expected to be mailed in October 2024. A second notice will follow once the software remedy is ready for deployment.
Until the fix is in place, Nissan advises owners to avoid using Level 3 quick charging stations and instead rely on slower charging methods, which do not present the same risk. For those affected, Nissan’s recall number is R24B2, and the corresponding NHTSA campaign number is 24V-700.
