What is the reason for the BMW X5 fuel gauge not responding?
2 Answers
It is highly likely that the fuel level sensor is damaged or the fuel float is stuck. It is recommended to perform a computer diagnosis to check for any faults. Here are some precautions for using the car fuel gauge: 1. Pointer indication deviation: When the fuel pump is working, the fuel tank is under negative pressure, and the corresponding fuel tank volume decreases, causing the fuel level to appear higher. Additionally, the thermal expansion effect of gasoline due to temperature can naturally cause the display to be higher. When the temperature drops and the fuel tank is opened, the pressure is released, and the fuel level drops accordingly. Therefore, such display deviation is a normal phenomenon. However, the deviation generally does not exceed the width of one pointer. 2. Do not continue driving after the indicator light comes on: When the indicator light comes on, it means the fuel level is too low. Continuing to drive at this time can cause the fuel pump, which is located inside the fuel tank, to generate a large amount of heat during operation. Fuel acts as its coolant, ensuring the fuel pump can work properly through continuous cooling by the fuel. Without the cooling effect of the fuel, prolonged operation of the fuel pump will inevitably cause it to burn out. 3. Refuel promptly after the indicator light comes on: Once the indicator light comes on, it is essential to refuel promptly because the fuel pump is located in the fuel tank and relies on gasoline for heat dissipation and lubrication. Insufficient fuel volume will adversely affect the normal operation of the fuel pump and reduce its service life.
I've encountered similar situations before. It's quite common for the fuel gauge on a BMW X5 not to respond after refueling. Most likely, the fuel level sensor in the tank is malfunctioning—either the float is stuck or the resistor strip is worn out. BMW's system is particularly sensitive and prone to this issue with slightly lower-quality fuel. Alternatively, it could be poor contact in the instrument cluster display module or a blown fuse. I recommend first reading the trouble codes, focusing on the voltage data of the fuel level sensor. Trying to fix it yourself might damage the wiring harness, while a professional repair shop can pinpoint the issue in half an hour. Also, remember to regularly refuel at reputable gas stations to extend the sensor's lifespan.
