What are the strange faults that novices often encounter?

Turn off the headlights after a delay, and many new owners don't know their own vehicles. When they got off the bus, they found that the headlights were still on, thinking they had not turned them off. This situation has actually been closed. The exhaust pipe drips and emits white fog. I believe many novices will have doubts about this problem, especially in winter, when the exhaust pipe runs for a period of time, a big pool of water will flow down on the ground, and you will see white fog on the exhaust pipe when you get off the bus.

The hood and fender are very hot. Many car owners will feel hot when they touch the hood and front fender for a while, thinking that there is something wrong with the engine. The reason is that even after driving for a short time, the engine will generate a lot of heat, which will be transferred, so they will think that the hood and front fender will be very hot. As long as the water thermometer and other cooling systems work normally, there will be no impact. This also reminds the car to regularly check the coolant level, at least to maintain the minimum (min).

Novice car owners will find that the air conditioner does not cool when idling, especially when the car starts, and mistakenly think that the air conditioner is broken. In fact, it is because the engine speed is directly proportional to the speed of the automobile air conditioning compressor. When the engine is idling, the speed of the automobile air-conditioning compressor is relatively low because of its low speed. At this time, the air conditioning system is in a low pressure state, the opening of the expansion valve will be relatively small, and the flow entering the evaporator will be small, resulting in less heat exchange in the evaporator. At this time, you will feel that the air conditioning system is not cooling or the cooling effect is poor. Similarly, when accelerating, the rotational speed increases, the low pressure decreases, the opening of the expansion valve increases, the flow rate increases, the heat exchange capacity of the evaporator increases, and the refrigeration effect is correspondingly enhanced.

I didn't know that the mechanic gave Miss A Liang a detailed explanation when the steering wheel was locked. Never twist the key hard in case it breaks. The correct way is to gently twist the steering wheel and at the same time twist the key to unlock. It is said that when a car is driving, it will always hear the alarm sound of "ding, ding, ding". I'm afraid of driving because I'm too nervous. Now the car is parked in the emergency parking area. I found the handbrake light on. Look under the handbrake lever. There was a napkin box at first. Don't put some unimportant things in the key parts of the car, which will affect the operation of the car.