Because of its simple and convenient operation, automatic transmission has gradually become the first choice for car purchase. Transmission maintenance start, idle parking, low or high speed driving, acceleration, deceleration, climbing and reversing, etc., which requires the driving force and speed of the car to change in a considerable range, while the widely used piston engine has a smaller range of output torque and speed. In order to adapt to the frequently changing driving conditions and make the engine work under favorable working conditions (high power and low fuel consumption), a transmission is set up in the transmission system. Automatic transmission maintenance the core of automatic transmission is to realize automatic shift. The so-called automatic gear shifting refers to that in the process of driving, the driver controls the accelerator pedal (accelerator pedal) according to the needs of the driving process, and the automatic transmission can automatically shift into different gears according to the engine load and the operating conditions of the car.

一、常見的故障是在行駛時出現弱速、低速或中速行駛時，汽車有明顯的換檔和挫折，并在儀表盤的滑軌上出現限速針；在中高速快速加油行駛時，出現空轉現象，而且測速針快速上升，撞擊感清晰；此外，汽車在懸掛或移位時有明顯的撞擊感，甚至有時會被關閉或延遲。這些癥狀表明自動變速器出現故障。

1、 The common fault is that when driving at weak speed, low speed or medium speed, the car has obvious shift and setback, and the speed limit needle appears on the slide rail of the instrument panel; when driving at medium high speed and high speed, there is idling phenomenon, and the speed measuring needle rises rapidly, and the impact feeling is clear; in addition, the car has obvious impact feeling when hanging or shifting, and sometimes it is closed Or delay. These symptoms indicate an automatic transmission failure.

二、常見故障有異常噪聲：在怠速、驅動和高負載換檔過程中，自動變速箱中出現異常噪聲或燃油噴射現象，這也意味著變速箱有故障。

2、 Common faults include abnormal noise: abnormal noise or fuel injection in the automatic transmission during idling, driving and high load shifting, which also means that the gearbox is faulty.

三、變速箱油都有異味，其中大部分都是由自動變速箱的高溫引起的。自動變速器使用液壓油。當外部散熱器出現問題時，油溫會過高。導致變速箱油液變質。建議業主定期清潔散熱器并更換防凍液。

3、 Transmission oil has peculiar smell, most of which is caused by high temperature of automatic transmission. The automatic transmission uses hydraulic oil. When there is a problem with the external radiator, the oil temperature will be too high. This causes the transmission fluid to deteriorate. It is recommended that the owner clean the radiator regularly and replace the antifreeze.

四、儀表指示燈報警：在車輛行駛中，儀表板上的自動變速器故障指示燈閃爍，也是變速器故障的預警信號。

4、 Instrument indicator warning: when the vehicle is running, the automatic transmission fault indicator on the instrument panel flashes, which is also the warning signal of transmission failure.

五、油溶液為乳白色：定期檢查自動變速器油。如果發現油是乳白色的，水箱可能受損或輸水被淹沒。

5、 The oil solution is milky white: check the automatic transmission oil regularly. If the oil is found to be milky white, the tank may be damaged or the water may be flooded.

六、檔變速箱油泄漏：通常應注意停車地面是否有油污，在保養車輛時應注意檢查齒輪箱油底殼部分漏油現象，如有及時處理，應避免齒輪箱油不足，使齒輪箱工作不正常。

6、 Gear box oil leakage: generally, attention should be paid to whether there is oil pollution on the parking ground. When maintaining the vehicle, attention should be paid to checking the oil leakage of the gearbox oil pan. If there is any timely treatment, the gearbox oil shortage should be avoided to make the gearbox work abnormally.

七、錯誤的變速箱油：

7、 Wrong transmission oil:

自動變速箱是一個非常精確的零件。不同的變速箱由于其工作原理不同，對油品的要求也不同。因此，必須嚴格按照制造商的標準更換特殊的油產品。

The automatic transmission is a very precise part. Different gearboxes have different requirements for oil products due to their different working principles. Therefore, special oil products must be replaced in strict accordance with the manufacturer's standards.

目前市場上有被稱為“通用油”的通用油產品。有些客戶不按照制造商要求的型號更換所謂的“一般”變速箱油，因為低質量的石油產品價格低廉。更換這些石油產品后，在傳動系統中發生撞擊或碰撞的機會顯著增加。同時，傳動在保護不良的情況下長時間工作，容易產生額外的老化和磨損。這使得變速器的使用壽命迅速縮短，大大增加了后續維護和維修的成本。因此，不建議使用通用傳遞油。

At present, there are general oil products called "general oil" on the market. Some customers do not change the so-called "normal" transmission oil according to the model required by the manufacturer because low-quality petroleum products are cheap. After replacing these petroleum products, there is a significant increase in the chance of collision or collision in the transmission system. At the same time, when the transmission works for a long time under the condition of poor protection, it is easy to produce additional aging and wear. This makes the service life of the transmission shorten rapidly, greatly increasing the cost of subsequent maintenance and repair. Therefore, it is not recommended to use universal transfer oil.

綜上所述，自動變速箱常見的故障有：行駛中的碰撞、撞車現象、換擋沖擊、熄火、車輛打滑、無法運行、啟動無力甚至無法啟動、噪音異常、溫度過高等。

To sum up, the common faults of automatic transmission are: collision during driving, collision phenomenon, shift impact, flameout, vehicle skid, unable to run, weak or even unable to start, abnormal noise and high temperature.