What is this small circle outside the car body? What's the role? With the rise of domestic cars, the price of cars has been falling, which has also made many people realize their car dreams. The reduction of car prices means that car dealers need to invest more money to get more customers. The contribution here includes giving some discounts to make customers feel more affordable. Among many discounts, giving away auto parts is the usual practice of car dealers. Among many auto parts, reversing radar is a favorite of many consumers.

When buying a car, some netizens may find that some cars have four small circles at the rear, while others don't. What happened? In fact, some consumers know the market and know the result of getting more preferential treatment from salespeople, so those consumers have four small circles at the tail of their new cars, which are parking radars. In fact, in the process of buying a car, consumers should be good at using the advantages of buying a car to talk about prices and concessions with sales staff. For some gifts of little value, the sales staff are also willing to give them away, but they will not give them away voluntarily.

Getting spare parts such as reversing radar and installing them in the car will be of great help to our own driving, especially in unfamiliar sections. With the help of the reversing radar, we can reverse the car more easily. In addition, the car has a rearview mirror, and the driver can't see everything completely after looking at the car through the rearview mirror. After all, there are still blind spots, more or less problems. With the reversing radar, the ultrasonic wave will give an alarm when it encounters an obstacle, and then remind the driver to stop. It is worth mentioning that the sheet metal maintenance of cars is not cheap now. For some slightly damaged sheet metal, the maintenance point will definitely tell you to replace it as a whole, which will cost a lot.

Of course, the reversing radar is an extremely sensitive electronic product. Usually, big guys don't touch it very much, and radar sensitivity will decrease if they touch it too much. In addition, after the heavy rain, the radar of the car may be contaminated with some water, which will also have a certain impact on the sensitivity of the radar. Therefore, when driving after rainy days, you should pay attention to wiping off the water on the radar with paper towels. Of course, as a qualified old driver, besides using the reversing radar, you should also learn to use the rearview mirror. After all, coming out of driving school is mainly to learn rearview mirrors. Don't lose this practical car function. After all, the reversing radar is an electronic component. Once damaged, it depends on the driver himself.