What Causes Headlights to Flicker?

1 Answers
AlexFitz
07/30/25 5:10am
Headlights flickering may be caused by abnormal charging voltage from the alternator, issues with the headlight wiring, or problems with the headlight switch. Abnormal charging voltage from the alternator: The alternator is driven by the engine. At idle speed, the engine's torque is low, and the headlights require high power, making it difficult to maintain normal operation. Solution: Have it inspected and repaired at a 4S shop. Issues with the headlight wiring or switch: If the issue doesn't occur when the headlights are off, it's likely due to poor contact in the wiring or switch. Overheating wires can increase resistance, reducing the brightness of the headlights. Solution: Have it inspected and repaired at a 4S shop.
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