What is the reason for the sudden disappearance of fuel level display in Volkswagen?

[McZane]

Car fuel gauge display abnormalities are generally caused by a faulty fuel level sensor (fuel level display sensor). Here is the relevant information: 1. Fuel level sensor: The fuel gauge detects the fuel level through a float. If the detection signal is distorted, such issues may arise. Some fuel level displays are controlled by a computer, and if the computer signal malfunctions, inaccurate displays may also occur, although this probability is very low. 2. Principle: Inside the car's fuel tank, a float is connected to a metal rod, operating on the same basic principle as the float in a household toilet water tank. When the water level drops, the float position also decreases, which in turn moves a lever to open the water inlet, allowing water to flow in. As the water level rises, the float position also rises, and once it reaches a certain point, the lever closes the water inlet.