How to Repair a Cracked Headlight?
2 Answers
Headlight cracks should be promptly addressed by visiting a repair shop or a 4S store for replacement. Below is an extended introduction: 1. Analysis of headlight cracks: When the headlight cover is cracked, it should be replaced at a repair shop or 4S store as soon as possible. If the taillight has minor cracks, restoration can be considered by using glass adhesive for repair. 2. Introduction to replacement methods: Most 4S stores do not allow users to replace the lens cover alone; the entire headlight assembly needs to be replaced. Therefore, it is better to go to a repair shop to replace just the lens cover. For users with strong DIY skills, they can also purchase and replace the lens cover themselves.
I usually handle this kind of issue myself. First, I thoroughly clean the crack, carefully wiping the surface with alcohol to remove any grease. Then, I prepare specialized headlight repair adhesive and carefully inject it deep into the crack using a syringe, paying extra attention to complex patterns. After that, I use a UV lamp to repeatedly cure it, which takes about two to three hours in total. Never take shortcuts by using regular glue, as it will reduce light transmittance and easily turn yellow. I've seen many people rush to get back on the road, only to have the crack reopen within two months. It's best to allow ample curing time. If the crack covers more than one-third of the area, honestly, it's more cost-effective to replace the entire headlight assembly, as repairs won't withstand winter temperature changes.
