How to Check if the Fuel Tank is Full or Not?

1 Answers
VanMariana
07/30/25 10:32am
Both analog and digital fuel gauges require the vehicle to be started before taking a reading. The analog fuel gauge is marked with two letters, E and F. E stands for Empty, indicating the tank is empty; F stands for Full, indicating the tank is full. The closer the needle is to the letter F, the more fuel remains; the closer it is to the letter E, the less fuel remains. When the fuel icon lights up, it indicates that there is not much fuel left, and refueling is needed as soon as possible. Here are some additional details: 1. Function of the fuel gauge: The fuel gauge provides a rough estimate of the fuel level and cannot display the exact remaining amount, serving only as a reference for the driver. For example, a digital fuel gauge might show a remaining range of 300 kilometers, but in reality, due to factors like vehicle condition and road conditions, the actual range might only be 150 kilometers. 2. Components of the fuel system: The fuel system mainly consists of four parts: the fuel gauge, sensor circuit, variable resistor, and float. When the fuel tank is full, the resistance value of the variable resistor connected to the float decreases, and the circuit current reaches its maximum. At this point, the fuel gauge needle is at its highest position. As the fuel level decreases, the resistance value of the variable resistor increases accordingly, the circuit current decreases, and the fuel gauge needle also lowers.
Was this review help?
16
1
Share
More Forum Discussions

What are the reasons why the Mercedes-Benz GLA200 cannot shift gears?

Mercedes-Benz GLA200 cannot shift gears, the reasons and solutions are as follows: Gear shift lock mechanism failure: The Mercedes-Benz transmission cannot shift gears, possibly due to a gear shift lock mechanism failure or a lock solenoid valve circuit failure. You can remove the shift cable, check the cable, and operate it to see if it can shift into other gears. Gear lock: It may also be due to gear lock or incomplete braking when parking, directly entering the P gear, causing gear braking instead of automatic braking. If the entire vehicle cannot power on, the automatic transmission will protect itself and will not shift. In this case, you can perform gear unlocking by pressing the black button above the transmission P gear to unlock it.
11
4
Share

What does the red car exclamation mark on the dashboard mean?

The red car exclamation mark on the dashboard is the brake system warning light. When this warning light illuminates, it indicates a malfunction in the vehicle's braking system. Immediate inspection is required to prevent potential safety hazards. There are several reasons why the brake system warning light may come on, including severely worn brake pads, insufficient brake fluid, overheated brake pads, or driving with the parking brake engaged. Brake fluid plays a crucial role in the vehicle's braking system. When the driver presses the brake pedal, the force applied is transmitted by the master cylinder piston through the brake fluid to the wheel cylinders at each wheel, causing the brake pads to contact the wheels and thereby stopping the vehicle.
15
4
Share

What are the methods to address excessive carbon monoxide levels?

The methods to address excessive carbon monoxide levels are: 1. Check the air filter, spark plugs, intake air temperature sensor, and intake manifold pressure sensor, then add dual-core friction reduction repair agent and high-efficiency cleaner. If ineffective, use a three-way catalytic converter cleaner to clean the three-way catalytic converter; 2. After using the high-efficiency cleaner, add the dual-core friction reduction repair agent for repair, then use the three-way catalytic converter cleaner to clean the three-way catalytic converter; 3. After using the high-efficiency cleaner, add the dual-core friction reduction repair agent for repair. Excessive carbon monoxide levels may be caused by an overly rich engine air-fuel mixture, incomplete gasoline combustion, obstructed intake system, worn fuel injectors, or severe cylinder wear.
14
5
Share

What are the reasons for the dash cam not working?

The reason the dash cam is not working is due to a dead battery. Below is an introduction to the functions of a dash cam and considerations for purchasing one: Functions of a Dash Cam: A dash cam is a device that records images, sounds, and other relevant information during vehicle travel. After installation, it can record the entire driving process in video and audio, providing evidence in case of traffic accidents. Considerations for Purchasing a Dash Cam: A dash cam should have good camera clarity and night recording capabilities. High definition is determined by the main control chip of the dash cam, so owners should pay attention to the image processing solution used by the main control chip. Additionally, the dash cam should have sufficient storage space to enable long-term effective recording.
10
5
Share

What does it mean when the engine warning light on the car dashboard comes on?

When the engine warning light on the car dashboard illuminates, it could be due to a damaged sensor in the engine or an actual engine malfunction. If this occurs, it's necessary to visit a 4S shop for inspection and repair. Professional diagnostic equipment can be used to read the fault codes, quickly identifying the faulty component and the cause of the issue. The car's engine is equipped with an ECU (Engine Control Unit), which acts as the brain of the engine. It collects data from various sensors and, after processing, controls the engine's operation through various actuators. If the actuators or sensors malfunction, the engine cannot operate properly. To minimize the likelihood of such issues, it's crucial to adhere to regular maintenance schedules and replace wear-prone parts on time during routine vehicle use.
19
4
Share

What does 'auto' mean on car headlights?

Auto on car headlights refers to the automatic headlight function. Here is more information about it: 1. Automatic headlights, whose full name can be called 'automatic light-sensing headlights,' primarily rely on a key component, the ambient light sensor, to determine whether the lights need to be turned on. 2. When the brightness of the external environment falls below a certain threshold, it will automatically control the headlights to turn on; when the external brightness exceeds a certain level, the headlights will automatically turn off. 3. The advantage of automatic headlights is that they can automatically control the turning on and off of the lights. For example, when suddenly entering a tunnel during the day and forgetting to turn on the lights, the automatic headlights can be quite user-friendly. Or during dawn or dusk when the light is poor, the headlights will turn on by themselves to illuminate the road ahead, significantly improving safety.
13
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.