What Causes the Fuel Gauge Not to Display on the Dashboard?

[Ramirez]

Dashboard not displaying fuel level is caused by a malfunctioning fuel level sensor. Below are specific details about the car fuel tank: Marked capacity is the safe volume: Most fuel tanks are marked with a safe capacity, which is generally about 10% less than the actual capacity. During design, considering the thermal expansion and contraction characteristics of fuel, to ensure driving safety, a certain space must be left in the tank after filling to the rated volume to prevent excessive internal pressure. Overfilling can damage the carbon canister, while underfilling leaves too much empty space, causing fuel to evaporate and be lost as vapor. Fuel gauge cannot accurately reflect remaining fuel: It is not possible to accurately determine the remaining fuel solely based on the dashboard fuel gauge, as it provides only a qualitative indication rather than a quantitative measurement. The relationship between fuel refill amount and mileage cannot be used to judge either, because road conditions, speed, traffic congestion, air conditioning usage, vehicle load, fuel leakage, and fuel quality all directly affect fuel consumption.