What is the reason for the reverse gear of Lexus ls460 after a delay of several seconds?

Lexus ls460 was delayed for several seconds before reversing. The reason is that there are stubborn dirt and impurities in it. Dirty impurities gather in the valve body to form a blockage, which can not effectively adjust the oil pressure, causing problems of retreat, impact and slippage.

Structure principle of automatic transmission;

The transmission ratio selection and gear shifting of automatic control gearbox are realized automatically. The so-called "automatic" means that with the help of the signal system reflecting the engine load and vehicle speed, the gears of the mechanical gearbox can be changed by adjusting the actuator of the gear shifting system. The driver only needs to operate the accelerator pedal to adjust the speed.

If the vehicle is a little slow, it should be a normal reflection. If the reaction time is too long, it is estimated that the throttle cable is worn, so it is recommended to check the throttle.