What Causes Electric Vehicle Headlights to Not Work?
2 Answers
Electric vehicle headlights not working generally have three main causes: loose or poor contact in the wiring, damage to the headlights, or a faulty converter. Additional details are as follows: Loose wiring: Due to prolonged vibration and aging, the connection wires between the electric vehicle controller and the headlights may become loose or have poor contact, leading to headlight failure. Damaged headlights: Some users may request shops to replace their headlights with LED ones when purchasing an electric vehicle. While this can make the lights brighter, the mismatch with the vehicle may cause the lights to malfunction more easily or even burn out. Faulty converter: The converter controls all lighting components of the electric vehicle. If it malfunctions, the most direct symptom is the headlights not working and the horn not sounding.
I encountered this issue before when driving an electric car. That time, the headlights suddenly went out while driving on a mountain road at night. Later, I learned that the headlights in electric vehicles mainly rely on the 12V low-voltage system for power, which is different from fuel-powered cars. Possible problems include burnt-out bulbs, blown fuses, or poor contact in the lamp socket. I’ve also faced a more troublesome situation where the DC-DC converter malfunctioned. This component is responsible for converting high-voltage battery power to low-voltage power, and if it fails, the entire lighting system can go down. Some electric cars have lighting control modules connected to the infotainment system, and software conflicts can also cause the lights to go out. The most troublesome issue is wiring problems, especially short circuits during rainy days. In such cases, it’s best not to try fixing it yourself and just call for a tow truck to be safe.
