What is the button below the rearview mirror in the car?
3 Answers
In basic trim models, it switches to the night anti-glare mode, while in higher trim models, it turns the rearview camera function on or off. The reversing camera system displays real-time images from the rearview camera, providing the driver with a clear view of the environment behind the vehicle, facilitating parking and reversing. Relevant information about the rearview mirror heating function is as follows: 1. Symbol: The rearview mirror heating symbol is a curved upward arrow paired with a rectangle. The location of the rearview mirror heating switch varies among different car models, but the symbols are generally similar. 2. Working principle: A heating element (heating film) is installed inside the lenses of both side rearview mirrors. In rainy or snowy weather, when the driver activates the rearview mirror heating function, the heating element quickly heats up to a fixed temperature within a few minutes, typically between 35-60 degrees Celsius, thereby heating the mirror surface to remove fog and frost.
I've been driving for almost twenty years and know every part inside the car like the back of my hand. That little button under the rearview mirror is usually the anti-glare switch, specifically designed to reduce the blinding glare from headlights of vehicles behind you. It's especially useful when driving at night—just press it and the mirror dims, giving you clearer vision and preventing dazzling glare. I used to overlook this feature until I nearly had an accident on the highway; now I make it a habit to turn it on as soon as I get in the car. The button is conveniently placed under the rearview mirror for easy access, though on some older cars, it tends to collect dust and needs regular cleaning. Paying attention to this little feature can significantly improve driving safety—new drivers should definitely try it out more often.
As someone who just got their driver's license, I find that button under the rearview mirror particularly useful. Its main function is anti-glare. When driving at night, if the headlights from the car behind are too bright and uncomfortable, a gentle press darkens the mirror, reducing the glare. My car doesn't have an automatic feature, so it's all manual operation. The button is conveniently placed within easy reach, but be careful not to fiddle with it on curves, as it can be distracting and risky. This button makes nighttime driving much more comfortable, especially on highways, allowing for better focus. It's a common topic among fellow drivers—simple in design but remarkably effective, and highly recommended for frequent use.
