What is the small square in front of the car?

[LaHarper]

The small square below the car's headlights is the headlight cleaning device, used to clean dust from the surface of the headlights. There are two structural modes for the headlight cleaning device. Scrubbing system: Used for glass diffusers, because although plastic diffusers have wear-resistant coatings, they are still relatively sensitive to mechanical cleaning. This type of cleaning system can still be seen in older generation models. High-pressure cleaning system: Used on both glass and plastic diffusers. The cleaning effect mainly depends on the distance between the nozzle and the diffuser, the size of the water droplets, the contact angle, the speed of the water spray, and the amount of water sprayed.

[VanBentley]

As an experienced auto mechanic, I believe that small square on the front of most cars is typically a radar sensor or camera module. Modern vehicles install this device at the front to enhance driving safety, primarily for adaptive cruise control or automatic emergency braking systems, which detect the distance to obstacles ahead. Having worked on numerous cars, I've found that if it gets covered in mud or damaged by impact, the entire assistance function will fail, sometimes even causing false system alerts. Car owners should develop a cleaning routine, especially after rainy days or off-road driving, using a soft cloth to maintain its sensitivity. Though small, this component is crucial. Designed with aerodynamics in mind, it's installed near the grille to avoid obstruction. Regular checks can prevent unnecessary repair costs and driving hazards.

[IkerMarie]

I usually commute in my own car and noticed that the small square is typically a sensor or camera. The first time it stopped working, my automatic parking system failed. Later, I learned from a consultation that mud had blocked the lens. During daily driving, it assists with emergency braking, which feels reassuring. As an ordinary driver, I recommend not overlooking this small detail: clean it while washing the car regularly, and if a warning light comes on, promptly check the wiring or fuse. Nowadays, many cars come standard with this feature, enhancing driving safety. It's very intuitive to use and doesn't require specialized knowledge to maintain.

[FrankRose]

As a car enthusiast, I absolutely love studying the small components on vehicles. That little square on most new cars is actually a front radar or camera, used for ACC adaptive cruise control or parking assist systems. At auto shows, I've compared different brands: economy cars might simply cover it as a tow hook cover, while premium models integrate high-tech sensors that are compact yet powerful. For maintenance, avoiding collisions and keeping it clean are crucial, otherwise it may trigger false alarms affecting overall driving performance. Automotive technology evolves so rapidly, these small designs embody innovation and practicality, making them well worth enthusiasts' attention to detail.