Why does the EV error light keep flashing?
3 Answers
This is an automatic fault message from the vehicle's system, indicating a malfunction. Below is expanded information: New Energy Vehicles: Refers to vehicles that use unconventional vehicle fuels as power sources or conventional vehicle fuels with new onboard power devices, integrating advanced technologies in vehicle power control and driving systems to form automobiles with advanced technical principles, new technologies, and novel structures. Meaning of the dashboard error: It indicates an odometer calculation program error, meaning the dashboard is malfunctioning. The dashboard is reading storage chip data incorrectly, which could be caused by damage to the storage chip due to repairs or other reasons.
I've been driving an electric car for several years, and the most common error light flashing is usually related to battery issues, such as overheating of the high-voltage battery or internal consumption due to excessively high temperatures or improper charging/discharging. Another cause is problems with the charging system, like a loose connection at the charging port or aging charging cables, leading to unstable voltage and triggering warnings. Software bugs can also cause the light to flash, such as conflicts after a system update that require a reboot. Once, during a long drive to the countryside, the light flashed wildly because dust had gotten into the sensor—simple cleaning fixed it. However, safety is crucial: when the light flashes, immediately reduce speed and pull over, then check basic connections after stopping. If the light continues to flash, don’t push your luck—call a tow truck and head to a professional shop. Preventive measures include regular battery health checks and avoiding full charges or deep discharges for extended periods, which can extend battery life and prevent issues. Be extra cautious during seasons with significant temperature changes.
From a technical perspective, flashing error lights in electric vehicles are mostly caused by control system malfunctions. The Battery Management System (BMS) triggers an alarm when it detects voltage imbalance or abnormal temperature, resulting in light flashing. Sensor issues are also common, such as faulty thermometers or current sensors providing distorted feedback data. On the software side, it could be due to firmware bugs or failed update conflicts. You can use a mobile app to connect to the vehicle's OBD interface and read error codes to pinpoint the problem. Flashing lights during charging often indicate poor charger compatibility or excessive fast charging causing battery overheating. It's recommended to switch to the original manufacturer's charger and monitor power consumption, avoiding overuse of fast charging to preserve battery life. During daily driving, pay attention to dashboard changes to detect abnormalities promptly. If the light keeps flashing, record the frequency and visit a service center for decoding—avoid DIY repairs to prevent component damage. The safety bottom line is not to drive a faulty vehicle.
