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2026-09-28 · 4 min read

Yellow, Foggy Headlights: A Safety Issue, Not Just Cosmetic

Oxidised headlights can cut your night visibility by up to 80%. Here's why it happens in Malaysia, how to fix it, and how to keep it from coming back.

Yellow, Foggy Headlights: A Safety Issue, Not Just Cosmetic

马来西亚紫外线强、气温高,车灯灯罩(通常是 PC 聚碳酸酯)在这种环境下特别容易氧化发黄、变雾。这不只是美观问题——雾化的灯罩会大幅降低夜间照明效果,增加行车危险。

为什么会发黄变雾

新车灯罩表面有一层防紫外线涂层,时间长了涂层磨损,PC 材料开始被紫外线氧化,表面产生微细裂痕形成雾状外观。马来西亚户外停车的车子通常 3–5 年开始明显。

对行车安全有多大影响

研究显示,严重氧化的灯罩可以减少 80% 以上的光线透射,等于你的车灯只剩两成效果。高速路上这意味着反应距离大幅缩短。

可以自己处理吗

轻度发黄可以用市售抛光膏(headlight restoration kit)自行处理,步骤是用不同粗细砂纸打磨然后抛光,效果可维持数个月。中度到严重氧化建议交给专业车厂处理,效果更持久均匀。

处理完怎么保持

抛光后一定要上一层 UV 保护漆(UV sealant),否则几个月内又会复发。尽量停有遮蔽的停车位,或用车衣保护。

什么时候该直接换灯罩

如果灯罩内部有水雾(密封圈老化进水)、有明显裂缝,或抛光已无法改善,换新灯罩是唯一解决方法。来店检查后我们会告诉你抛光能修还是该换。

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