NHTSA Complaint #11715166 — 2020 NISSAN LEAF

The high-voltage battery on my 2020 Nissan Leaf is subject to Recall 25V655. The recall notice states that the battery cells can develop excessive lithium deposits, which increases electrical resistance and can cause rapid battery heating during Level 3 fast charging. Nissan instructs owners not to use Level 3 charging at all until a “remedy” is available. The issue is that the remedy described by Nissan is not an actual repair of the battery defect. Nissan states it will install software that monitors for “state-of-charge fluctuation” and, if detected, will prevent the vehicle from restarting or recharging in order to avoid a thermal incident. This means the defect inside the battery cells is still present, and the car may disable itself if the defect begins to appear. The recall materials also state there is no warning before overheating occurs. This creates multiple safety concerns: • The underlying battery defect remains uncorrected. • The vehicle can become immobilized (unable to restart or recharge) if the software detects the condition. • Loss of Level 3 charging capability affects the ability to travel safely or plan charging when needed. • A battery fire risk exists during Level 3 charging if the defect is not detected in time. Nissan’s documents state that the software is meant only to prevent the “progression” of a thermal incident, not to repair the defective battery. I am concerned that my vehicle contains a known hazardous defect that has not been physically repaired and that the software-only response is inadequate to ensure safety. I am filing this complaint so NHTSA is aware that the remedy being offered does not address the internal battery defect itself and may leave owners exposed to continued safety and reliability risks.