What does 'BYD Song EV restricted' mean?
2 Answers
BYD Song EV restricted means that the high-voltage electrical part of the vehicle cannot work normally. This does not mean that the entire high-voltage system is damaged, but rather that a certain component has a problem, activating the high-voltage interlock program of this system. Solution: Restart the vehicle to see if the issue can be resolved. If not, it indicates that the problem cannot be solved by the owner themselves. To eliminate the 'EV function restricted' fault, it is necessary to connect an OBD to read the fault codes and data stream, identify the exact problem, and then take appropriate measures. Moreover, it is not recommended to try to troubleshoot the problem on your own, as BYD's high-voltage system exceeds 700V, posing significant danger.
As an electric vehicle owner, I've encountered several instances of vehicle power limitation. When the BYD Song EV enters limited mode, it's essentially the system detecting potential issues like excessively high battery temperature or overload risks in the drive motor, automatically reducing power or limiting speed to protect core components. This typically occurs during hot weather or after prolonged driving to prevent battery damage. Once during a summer road trip with the AC on full blast, I suddenly couldn't accelerate and saw a warning on the display, realizing the cooling system couldn't keep up. It's advisable to check battery health and charging status - SOC imbalance might also trigger this. Don't push through - immediately park somewhere safe to let the vehicle cool down. Regular maintenance should pay extra attention to coolant levels and system updates to minimize such occurrences. While EV maintenance is simpler than combustion vehicles, these minor issues require prompt attention.
