Why does the electric vehicle suddenly stop moving while the power is still on?
4 Answers
This situation occurs due to a damaged controller, and replacing it will resolve the issue. Below are specific details about the controller: 1. Introduction: The electric vehicle controller is a core control unit of the vehicle. It features functions such as reverse charging, stall protection, dynamic and static phase loss protection, cruise alarm, high-speed control, mode switching, and follow-up ABS system. 2. Technology: In the traditional development process of control units, a serial development model is typically adopted. This involves first defining system requirements and corresponding functions based on application needs, followed by hardware design. Assembly language or C language is then used to write hardware-oriented code, after which software-hardware and external interface integration is completed, and finally, the system undergoes testing and calibration.
I've encountered quite a few electric vehicle issues like this - power is on but the car won't move. The most common cause is control system malfunctions. For instance, the drive motor module might be stuck, or the high-voltage battery management system activates self-protection and cuts off power output when detecting abnormalities. You should also check the wiring to see if any fuses are blown or connectors are loose, especially in older EVs which are prone to such issues. Sometimes it's just a software bug that can be fixed with a reboot, but avoid frequent power cuts to prevent battery damage. Last time when helping a friend troubleshoot, we found the motor controller was rusted due to water ingress - replacing it solved the problem. I recommend first checking if any warning lights are illuminated on the dashboard. If so, don't force it to drive - take it to a professional shop for computer diagnostics. High-voltage components are dangerous, so never attempt to disassemble the battery yourself - safety first. Regular maintenance of the battery and systems can reduce such troubles.
I've been driving for over a decade, and it was really scary when the electric car suddenly stopped moving but the power was still on. It's most likely that the system protection kicked in, such as automatic power cut-off during overspeeding or emergency braking. Check if you forgot to release the parking brake or if the key wasn't turned to the right position; that happened to me once, and it worked fine after a few retries. Also, see if you accidentally activated the economy mode, which limits power output. Wiring issues like a blown fuse could also be the cause—look for the manual yourself; the fuse box is under the driver's seat, and try replacing it with a new one. Battery aging is another factor; if the weather is too hot or too cold, lithium battery performance drops, and the car won't move. If you notice something wrong, pull over immediately, turn on the hazard lights, and call a tow truck to take it to the 4S shop. When charging normally, don't overcharge—stop at 80% to extend the battery's lifespan.
I find this quite interesting and it might be related to the intelligence of electric vehicles. Just like how my car control app sometimes malfunctions, software bugs can cause the system to freeze—power is on but the drive is cut off. Try restarting the vehicle by completely disconnecting the power for a few seconds and then reconnecting it. On the hardware side, motor controllers have a high failure rate, and overheating protection mechanisms can trigger a shutdown. Check the OBD interface or app logs for error codes. Connection issues are also common, such as weak vehicle network signals or dirty sensors—clean the radar probes. A faulty battery management unit can misjudge situations, like unstable voltage, so use tools to check if the readings are within the normal 12-48V range. In daily use, avoid parking in damp and hot underground garages to prevent corrosion.
