What are the reasons for cracks in the rear taillight cover of a car?
2 Answers
Car rear taillight covers develop cracks due to: 1. Prolonged use leading to aging of the cover; 2. Possible scratches. Methods to address cracks in the rear taillight cover include: 1. Depending on the severity of the cracks, continue using it for a while if still functional; 2. Perform simple repairs using glue and plastic; 3. Inspect the taillight wiring—replace the cover if it risks short-circuiting during rain. Rear taillights are crucial for alerting following vehicles of your presence at night and indicating the positional relationship between cars. Timely maintenance of external vehicle lighting is vital for drivers, as it not only affects driving comfort but also directly impacts road safety.
I previously encountered a cracked taillight lens and found this issue quite common, likely stemming from minor frictions in daily car use. For instance, small stones kicked up while driving can hit the lens, and with enough force, directly cause a crack; or when parked roadside, someone reversing might scrape it. Another reason is aging of the lens—plastic becomes brittle over time, thinning and weakening due to exposure to wind and sun, leading to cracks under sudden temperature changes. A friend also mentioned that vigorous scrubbing during car washes or chemical corrosion can accelerate crack formation. Once cracked, rainwater can seep in, potentially causing bulb short circuits, and if the brake light fails, it increases the risk of rear-end collisions—definitely something to be cautious about. It's advisable to regularly inspect the lens condition, replacing it early if issues are spotted, and to avoid road potholes while driving to reduce accident risks.
