Title: How to adjust the headlight left and right? Popular topics and operation guides on the Internet in the past 10 days
Recently, discussions about vehicle headlight adjustment have become increasingly popular on major automotive forums and social platforms. In particular, "how to adjust the left and right angles of the headlights by yourself" has become the focus of attention among car owners. This article will combine the hot content of the entire network in the past 10 days to provide you with a structured operation guide and related data.
| Ranking | topic | heat index | Main discussion platform |
|---|---|---|---|
| 1 | How to adjust the headlight left and right | 92,000 | Autohome, Zhihu |
| 2 | Adjustment differences between LED headlights and halogen lights | 78,000 | Douyin, Bilibili |
| 3 | Annual inspection headlight brightness standards | 65,000 | Weibo, understand car emperor |
1. Preparation:
• Tools required: Phillips screwdriver, tape measure, wall or special calibration plate;
• Environmental requirements: At night or in dark places, vehicles should be 3-5 meters away from the wall.
2. Operation process:
| steps | Operating Instructions |
|---|---|
| 1 | Turn on the low beam headlights and mark the center point of the light spot on the wall |
| 2 | Locate the rear headlight adjustment screw (labeled "L/R" or horizontal icon) |
| 3 | Turn the screw clockwise to lower the right light, counterclockwise to raise it |
| 4 | Adjust the left and right light spots to be symmetrical, with the right light slightly lower than the left light (to avoid dazzling) |
1. Why should the right light be lower than the left light?
According to popular answers on Zhihu in the past 10 days, this move complies with the requirements of the national standard "GB4785" to avoid dazzling drivers in the opposite lane, and the right light needs to be shifted downward by 2%-3%.
2. Adjustment differences for different models:
| Vehicle type | Adjustment features |
|---|---|
| SUV/MPV | Additional inspection of height adjustment is required to prevent excessive exposure |
| Models with automatic leveling system | You need to turn off the function first and then adjust it manually |
• Road test verification is required after adjustment to avoid the illumination angle being too narrow;
• If the headlight assembly is damaged (such as water intrusion or lampshade aging), repair must be prioritized;
• About 35% of the cases of unqualified lights in annual inspections are due to excessive left and right deviations (data source: Vehicle Quality Network).
Through the above structured guide, car owners can quickly master the headlight adjustment skills. For further discussion, you can refer to Douyin#Carlight Adjustment Challenge or Autohome’s “2024 Headlight Adjustment White Paper”.
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