
It is recommended to replace with new lamp housings or try installing focusing lenses. The main causes of xenon headlight scattering are as follows: 1. Installation techniques or bulb physical parameters may cause the headlight optical center to shift. Since the modified light source center deviates from the originally designed optical center position, scattering inevitably occurs. Similarly, when the optical center shifts left or right, improper focusing will also occur. 2. Changes in light wavelength cause lens parameters to mismatch with the light source wavelength. The second reason for scattering in modified HID xenon headlights is the significant difference between the main spectrum of HID and the original halogen lights, leading to poor focusing. However, within the visible light range, the refractive index changes little with light waves, so the main cause of chromatic dispersion in modified HID xenon headlights is the displacement of the light source position.

I once encountered the issue of scattered xenon headlight beams while driving. That night on the highway, the light was flickering uncontrollably, making it particularly tiring to see the road. Later, when I investigated the cause, I found that a layer of dust and grease had accumulated on the lens, causing the light beam to lose focus. I gently wiped it clean with a soft cloth dipped in alcohol, and the situation improved immediately. Another time, the bulb was misaligned, and simply reinstalling it solved the problem. Regular maintenance is crucial—for example, cleaning the reflector bowl and lens monthly to prevent dust buildup from affecting the light. Scattered beams not only impair your own visibility but can also dazzle oncoming drivers, increasing the risk of accidents. A friend of mine had a minor accident because of this. I recommend using specialized cleaners for stubborn stains and checking the reflector bowl for scratches or aging if the problem persists. If you can't fix it yourself, promptly visit a professional auto repair shop to adjust the beam height or replace parts. Don’t delay, as it could compromise driving safety.

Xenon headlight glare may stem from bulb aging, reflector bowl dirt, or installation misalignment. I recommend prioritizing cleaning the exterior lens and interior reflector bowl using a slightly damp soft cloth to remove dust and oil stains. Check if the bulb is securely installed, tighten or replace it if loose. Beam adjustment is crucial: park on level ground and adjust the height and focus point against a wall using the adjustment screws. If glare persists, inspect the electronic control module or ballast for faults, as aging components can affect stable current output for lighting. Daily care should avoid scratching the lens with hard objects, and promptly clean stains after rainy drives. Professional tools can quickly diagnose the cause—avoid tampering with circuits yourself to prevent system damage affecting other functions. Stable lighting is fundamental for nighttime driving safety.

Astigmatism can cause uneven brightness in xenon lights, affecting nighttime safety. I found that cleaning the lamp cover solves most of the problem, especially in dusty environments. Check the bulb position to ensure proper alignment and avoid scattering due to incorrect installation. Improper beam height also easily causes astigmatism, and parking adjustments are simple and effective. Replace the reflector bowl promptly if it has stains or scratches. Important note: Astigmatism increases accident rates, so don't ignore it. If you can't handle it yourself, go to a professional shop to avoid risks. The key to light maintenance is accident prevention.


