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As the saying goes, the car is a man's "little wife", and it is true that many car owners in daily life are very much in love with their car, afraid of a little malfunction. But a lot of time because the owner is not very aware of the car, so often "misdiagnosis", the original small problems are amplified to replace some of the entire component, which is a waste of time and waste of money. What are the faults in daily life that are easily misunderstood? The editor below has sorted out some minor malfunctions that are often misdiagnosed. Fault 1: the back door can not open the rear seat passengers to get off, but it is found that the door can not be opened, resulting in a slight pull of the handle from the door. The novice may think, "no, it looks like the door lock is broken." In fact, this is just a child's safety lock. In order to prevent children from accidentally opening the door from the car, many vehicles are equipped with children's locks. If the device is accidentally started, the rear door can only be opened outside the car. In this case, just close the child lock. Some children's locks are located at the door handle of the rear door, and some cars arrange the lock position on the side of the back door. Only when the door is opened can it be adjusted. Fault two: the air conditioner is not cool enough, some novice often envy other people's car air conditioning so cool, and their own car to the maximum air conditioning, the most is just feel "not too hot", and every time the sun starts the air conditioning, it takes a long time to cool down in the car. You probably ignore the role of the inside and outside loop buttons. If the vehicle starts the air circulation inside and outside the air conditioner, the cooling effect will obviously decrease, but the advantage is that the air is fresh. On the contrary, if the internal circulation of air-conditioning is used simply, the cooling capacity will be greatly improved, but the disadvantage is the lack of internal and external air exchange, and the air in the compartment is not fresh enough. Fault three: when the steering wheel is stuck to start the vehicle, it is surprised to find that the car key is unscrewed, or the steering wheel is stuck. In this case, do not think that the car is broken, please repair it, because this is just the lock of the steering wheel of the vehicle. The steering wheel is automatically locked after parking. This is a very common function on cars. Although compared with most electronic burglar burglar devices, the steering wheel lock appears original, but for the thieves, even if the car is successfully started, the steering wheel can not be rotated, so it still has a good anti-theft function. Fault four: Hang feeling too hard, obviously feel comfortable when buying a car. How do I hang up so hard now? And I didn't feel so bumpy when I was in the same style of car. In this case, we should pay attention to check whether the tire pressure is too high. The tire is a very important shock absorber in the car. When the tire pressure is suitable, the tire can absorb the bumps well from the road, but if the tire pressure is not suitable, especially the tire pressure is too high, the tire loses its ability to shock absorption. Fault five: fuel consumption is too high, novice often headache, there is a big problem, that is fuel consumption. Fuel consumption is the most important criterion to distinguish novice and veteran. Novices not only do not know enough about routes, but also do not have enough knowledge about vehicles. Manual manual blocking, frequent low gear or high speed and low speed will have a great impact on engine and fuel consumption. Open automatic block, novice do not know how to use the throttle depth control gear, high fuel consumption is reasonable. The above situation may be rare in the driving process of the old driver, because the day after the practice will have a deep understanding of the car, each button knows what to do with it. But it is inevitable that some new drivers will be nervous when they encounter this situation. This is due to the ignorance of the function of the car. There are many similar examples, which tell us not to be too nervous when some surface faults are encountered, perhaps just a small button that gives us a wrong judgment.