What are the reasons why an electric vehicle won't start?

[StPaislee]

Electric vehicles may fail to start for the following reasons: 1. Poor connection of wiring: If the wiring becomes loose or corroded due to external factors, poor contact may occur. In this case, the electric vehicle may appear to have power when unloaded, but it actually cannot start. To address this issue, professional testing equipment is needed to locate the poor connection, followed by wire replacement and repair. 2. Motor malfunction: If the motor malfunctions, it will hinder the operation of the entire electric vehicle. For this problem, it is necessary to visit a specialized electric vehicle repair shop. 3. Loose or detached power wires: As the brain of the electric vehicle, the controller is often the most overlooked important component. Many electric vehicle users experience situations where the vehicle has power but won't start, and a very direct reason is that the power wires have become loose or detached.

[VanJoanna]

I once encountered a situation where my electric vehicle wouldn't start, which really stressed me out. It turned out to be caused by a depleted small 12V auxiliary battery. This secondary battery powers the startup system, and once it ages, the car becomes completely unresponsive. At the time, I first checked the charging status, which showed full, but the dashboard had a red warning light; trying to remove and reinsert the key card didn't help, and I eventually had to call for roadside assistance, which diagnosed the battery as faulty. Remember, unlike gasoline cars, EVs don't have traditional ignition components, but cold temperatures or prolonged parking can accelerate the aging of small batteries. It's recommended to check the battery voltage every six months—don't skimp on this to avoid being stranded and delayed. It's also a good habit to routinely start the vehicle's system while charging to confirm everything's working properly.

[LauraDella]

From an owner's perspective, common reasons why electric vehicles fail to start include insufficient charging or software malfunctions. My personal experience involved garbled warning messages on the dashboard, which later turned out to be a loose high-voltage battery connection preventing current transmission. First, check the charging status: if the battery level is too low, it definitely won't start. If the display appears normal, verify whether the key card is being recognized, as signal interference due to positioning can sometimes cause failures. Additionally, failed software updates may lead to system crashes, and pressing the restart button might help refresh it. Battery performance degrades rapidly in extremely hot or cold weather, particularly affecting startup. Safety first—if something seems wrong, don't force it. Immediately contact a professional shop to diagnose with specialized equipment to prevent the issue from worsening.

[LaLuke]

As an electronics enthusiast, I believe electric vehicles failing to start is mostly due to hardware or system bugs. Modern cars are entirely computer-controlled—a single sensor malfunction can lock the startup signal. For example, if the BMS (Battery Management System) module malfunctions, the vehicle might mistakenly deem conditions unsafe and automatically cut power. First, check if the 12V battery terminals are corroded; blown high-voltage fuses are also a common issue. If the dashboard shows abnormalities, attempting a reset or firmware update might resolve it. For prevention, keep the vehicle's system updated and avoid prolonged inactivity to prevent battery degradation.