my Volkswagen Passat B8 (2015-2022) fuel gauge is not working properly

Solution

1. Preparation

• Gather necessary tools and safety equipment.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is on a flat surface and the engine is cool.

2. Access the Fuel Level Sensor

1. Remove the rear seat or trunk panel (depending on the model) to access the fuel tank.
   • Tools: Socket set, panel removal tool.
2. Locate the fuel tank access cover and remove it carefully.
   • Tools: Flathead screwdriver.
3. Disconnect the fuel lines and electrical connector from the fuel pump assembly.
   • Tools: Fuel line disconnect tool.

3. Inspect and Replace the Fuel Level Sensor

1. Remove the fuel pump assembly from the tank.
   • Use a ratchet and socket to remove retaining bolts.
2. Inspect the fuel level sensor for damage or debris.
3. Replace the fuel level sensor if necessary.
   • Tools: Replacement fuel level sensor, torque wrench.
   • Torque specifications for the fuel pump assembly bolts: Typically around 10-15 Nm (check specific vehicle manual).
4. Reinstall the fuel pump assembly into the fuel tank.

4. Reconnect Components

1. Reconnect the electrical connector and fuel lines to the fuel pump assembly.
2. Replace the access cover and secure it.
3. Reinstall the seat or trunk panel.

5. Final Checks

1. Reconnect the negative battery terminal.
2. Turn the ignition to the ON position without starting the engine to check gauge movement.
3. Start the engine and monitor the fuel gauge for accurate readings.