What is the reason for the buzzing sound when turning on the headlights of the new CS75?
3 Answers
The buzzing sound when turning on the headlights of the new CS75 may be due to an issue with the wiring. Solution: It is better not to attempt modifying the relay yourself; instead, take the car to a repair shop. Incorrect modifications could lead to short circuits, malfunctions, or even more serious consequences like a fire. Definition of Relay: The car's relay acts as an intermediary, using a small current to control high-current electrical appliances, such as the headlights. However, if the current passing through the relay is too small or too large, it can cause abnormal noise in the car's headlights.
The issue of buzzing sounds when turning on the headlights is quite common in many new cars, especially models with LED lights like the new CS75. It's most likely the cooling fan in operation, as LED lights generate significant heat and require fan cooling. If the noise stops when you turn off the lights, it indicates normal functioning. However, if the noise is unusually loud, be cautious as it might be due to dust on the fan blades or some obstruction causing increased friction. Sometimes, aging relays can also produce similar noises and cause the entire car to vibrate. With years of driving experience, I advise against attempting DIY repairs. First, check if the fan grille is clogged with dirt—cleaning it with a soft brush might solve the problem. If the issue persists, visit a 4S店 immediately to inspect the circuit for safety. Occasionally, voltage instability can also cause such disturbances, but don’t delay repairs to avoid damaging other components, which could pose a risk to driving safety.
The buzzing sound after turning on the lights of the new CS75 is mostly from the heat dissipation device inside the headlights. Nowadays, LED car lights are equipped with fans that automatically start for heat dissipation. When I was playing with cars, I found this kind of sound normal, but if the frequency is too high, like the roar of an engine, there might be a problem, such as worn fan bearings causing unbalanced rotation or oxidized relay contacts causing abnormal current oscillation. Additionally, some users shared that poor wiring fixation during new car assembly can produce resonance sounds, and simply tightening the plugs can be effective. The testing method is quite simple: after turning on the lights, listen to where the sound is coming from. If it's from the fan, try cleaning the accumulated dust; if it's from the controller end, it's recommended to power off and restart the system. Don't ignore it, as long-term use can increase power consumption and affect lifespan.
