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Why doesn't the fuel gauge display after refueling?

2 Answers

DelIris

07/29/25 7:23pm

The reasons why the fuel gauge doesn't display after refueling are: 1. Fuel float failure; 2. Computer signal failure; 3. Instrument damage. The fuel gauge consists of a fuel level indicator with a voltage regulator and a fuel level sensor. Its function is to immediately illuminate an alarm when the fuel in the tank is less than a specified value to alert the driver. Precautions for using the fuel gauge are: 1. Do not wait until the warning light comes on to refuel; 2. It is not recommended to fill the tank completely when refueling. The method to check the fuel gauge is: 1. When the illuminated bars reach the F position, it means the tank is full; 2. The closer the illuminated bars are to the E position, the less fuel remains, and it's time to refuel promptly.

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DelHailey

08/14/25 2:07pm

I've dealt with many similar issues where the fuel gauge doesn't display after refueling, which is usually related to the fuel tank sensor. For example, the float might be stuck or contaminated with oil, preventing it from moving up and down, which stops the signal from reaching the dashboard. Poor wiring connections are also common factors, such as loose plugs or aging rust interrupting the current. A blown fuse can cause the entire circuit to fail, requiring you to check the manual to find and replace the corresponding fuse. Additionally, impurities like accumulated dust in the fuel tank may hinder the sensor's operation. I recommend trying a simple method first: turn the ignition key on and off a few times to see if the system can reset. If that doesn't work, avoid tampering with the circuit yourself and head to a repair shop immediately to prevent running out of fuel on the road. Regular maintenance, including cleaning the fuel tank and checking the dashboard, can help prevent such failures.

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