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What is the button on the center rearview mirror for?

2 Answers

DanielLee

07/29/25 6:19pm

The center rearview mirror in base model vehicles is used to switch to night-time anti-glare mode. Below is relevant information about rearview mirrors: Introduction to rearview mirrors: A rearview mirror is a tool that allows the driver, while seated in the driver's seat, to directly obtain information about the rear, sides, and lower areas outside the vehicle. For the convenience of driver operation, to prevent traffic safety accidents, and to ensure personal safety, all countries mandate that vehicles must be equipped with rearview mirrors, and all rearview mirrors must be adjustable. Installation of rearview mirrors: When designing rearview mirrors, the main design considerations include the field of view (indirect vision) obtainable by the rearview mirror, image distortion, image clarity, image size, the position of the image in the rearview mirror, and ease of adjustment corresponding to changes in the driver's viewpoint. Rearview mirrors should be installed in the position on the vehicle body with the least vertical vibration.

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LeElle

08/14/25 10:58am

I've been driving for many years, and that button on the center rearview mirror is usually for the anti-glare function. When driving at night, the high beams from vehicles behind are particularly dazzling, affecting visibility and concentration. At this point, pressing the button or giving it a gentle push will darken the mirror, reducing the intensity of the reflection. The principle of manual anti-glare is that it flips an internal lens, changing the angle of light reflection. Some high-end cars have an automatic version where sensors detect strong light and adjust automatically, eliminating the need for manual operation. Using it correctly can prevent accidents, and I always use it during night drives. However, occasional button malfunctions might be due to a stuck lens or electrical issues, requiring a check at the 4S shop. Safety comes first in driving—this feature is simple yet practical, especially on highways where it can be a lifesaver.

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