Automatic gearbox is a kind of transmission device that can automatically shift and operate automatically according to the speed of the car and the engine speed, which appears relative to the manual gearbox. At present, there are four common types of automatic transmissions in automobiles, namely, hydraulic automatic transmission (AT), mechanically continuously variable automatic transmission (CVT), electronically controlled mechanical automatic transmission (AMT) and dual-clutch automatic transmission. After understanding the concept of gearboxes and the classification of gearboxes, let's get to the topic below, how to maintain automatic gearboxes.

　　Some driving habits will also affect the life of the gearbox. Change the manual low gear when climbing. When the car is automatically crawling forward without stepping on the brakes or giving the accelerator, the clutch is in a semi-linked state. At this time, the wear between the clutch plates will be very serious. Use manual mode when going up and down steep slopes. When we are out of luck, maybe our car will be stuck on a steep slope, stop and go. At this time, we should use the manual mode of the automatic manual transmission to limit the gear to 1 gear to cope with frequent slope starts. This operation also protects the gearbox. When you go down a steep slope or use a low gear in manual mode when driving in an underground garage, it is obviously much more comfortable than going downhill with D gear. At least we don't need to brake frequently and for a long time, and it can also ensure driving safety, which can kill two birds with one stone. Use manual mode when accelerating and overtaking. If the transmission is in a high gear when overtaking is needed, the manual mode of the transmission can be used to quickly downshift, the vehicle can instantly increase the speed with the high torque of the low gear and complete the overtaking faster.

　　Specific maintenance practices:

　　1. Clean and maintain the automatic gearbox in time. Under normal circumstances, the automatic gearbox should be cleaned and maintained every 20,000 to 25,000 kilometers. Or when the gearbox slips, the water temperature is too high, the gear shift is slow, or the system leaks, clean and maintain it once.