What does the 'E' on the Corolla fuel gauge indicate?
1 Answers
The 'E' on the Corolla fuel gauge indicates low fuel, while 'F' indicates a full tank. The fuel gauge is used to display the amount of fuel remaining in the vehicle's fuel tank, which can be either a needle-type or digital display. The fuel gauge consists of a fuel level indicator with a voltage regulator and a fuel level sensor. The fuel gauge cannot accurately reflect the exact fuel level: It is not possible to determine the precise fuel level solely based on the fuel gauge on the car's dashboard. The gauge provides a qualitative indication rather than a quantitative measurement of the fuel remaining in the tank. Additionally, fuel consumption cannot be accurately judged by the relationship between the amount of fuel added and the distance traveled, as factors such as road conditions, speed, traffic congestion, use of air conditioning, vehicle load, fuel leaks, and fuel quality can all directly affect fuel consumption. The labeled capacity is a safe volume: Most fuel tanks are labeled with a safe capacity, which is generally about 10% less than the actual capacity. During the design of the fuel tank, the thermal expansion and contraction characteristics of fuel are taken into account. To ensure driving safety, a certain amount of 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 in the tank, leading to fuel evaporation and loss as vapor. Therefore, it is recommended to stop filling when the pump automatically stops (known as 'clicking off').
