1、 Drain the old automatic transmission oil.

　　将车辆行驶正常工作温度(70°c-80°c)，降低油液粘度(确保油液中的杂质和沉淀物随油液排出)，方可排放油液。然后停止并关闭发动机，将其置于停车档(P)位置，拧紧手刹并抬起车顶。

　　Drive the vehicle to the normal operating temperature (70 ° C-80 ° C), reduce the viscosity of the oil (make sure that the impurities and precipitates in the oil are discharged with the oil), and then drain the oil. Then stop and shut down the engine, put it in the park position (P), tighten the handbrake and lift the roof.

　　二、拆卸排油螺塞上的自动变速箱油底壳

　　2、 Remove the ATF pan from the drain plug

　　排干油底壳内的油，必要时将油底壳取出，彻底清洗油底壳和过滤器(必须更换纸芯)，清洗冷却器，然后安装油底壳和排油螺塞。

　　Drain the oil in the oil pan, take out the oil pan if necessary, thoroughly clean the oil pan and filter (the paper core must be replaced), clean the cooler, and then install the oil pan and drain plug.

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　　三、使用压缩空气从液力变矩器中吹出尽可能多的油

　　3、 Use compressed air to blow as much oil out of the torque converter as possible

　　四、加油时，注油规范中的自动换油应达到规定的油位高度(由于新油加入且温度较低，油位高度应接近刻度线下限)。

　　4、 During oil filling, the automatic oil change in the oil filling specification shall reach the specified oil level height (since new oil is added and the temperature is low, the oil level height shall be close to the lower limit of the scale line).

　　五、沥干所有油，重复步骤1、2和3。

　　5、 Drain all oil and repeat steps 1, 2 and 3.

　　六、然后启动发动机，烟台车辆维修说明在发动机怠速运转时，将所有齿轮移回停车文件(P)位置，此时若油位较低，应继续加油规定的油位。

　　6、 Then start the engine. Yantai vehicle maintenance instruction: when the engine is idling, move all gears back to the position of the parking document (P). At this time, if the oil level is low, continue to refuel to the specified level.

　　七、，当达到正常工作温度时，再次检查热车运行时油位是否接近刻度线的上限，调整油位。

　　7、 Finally, when the normal working temperature is reached, check again whether the oil level is close to the upper limit of the scale line when the hot car is running, and adjust the oil level.

　　八、如果不小心使油位高于规定高度，则不应强行使用，并应松开打开油螺塞进行放油。

　　8、 If the oil level is higher than the specified height, it should not be used forcibly, and the open oil plug should be loosened to drain oil.

　　自动变速箱油的化学成分会随着时间的推移而变化，如氧化和变质，一些轻的成分也会蒸发，而蜡质成分也会分离出来。所以济南宝马汽车维修小编建议车主用两年4万为一个周期更换自动变速箱油。

　　The chemical composition of automatic transmission oil will change with time, such as oxidation and deterioration, some light components will also evaporate, and wax components will also be separated. Therefore, Jinan BMW car maintenance team suggested that the owner should change the automatic transmission oil in a cycle of 40000 km in two years.