my Toyota Corolla E140 (2006-2013) fuel gauge is inaccurate what should I do

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts or shocks.

2. Access Fuel Level Sensor

• Remove the rear seat cushion to access the fuel tank cover.
• Unscrew and remove the fuel tank cover to expose the fuel pump assembly.

3. Remove Fuel Pump Assembly

• Disconnect the fuel lines carefully to avoid fuel spillage (use a rag to catch any fuel).
• Disconnect the wiring harness from the fuel pump assembly.
• Unscrew the retaining ring and gently lift the fuel pump assembly out of the tank.

4. Inspect and Replace Fuel Level Sensor

• Remove the fuel level sensor from the fuel pump assembly.
• Inspect the sensor for damage, corrosion, or wear.
• If necessary, replace the fuel level sensor with a new one, ensuring it is seated correctly.

5. Reassemble Components

• Reinstall the fuel pump assembly into the tank, securing it with the retaining ring.
• Reconnect the wiring harness and fuel lines, ensuring they are secure.
• Replace the fuel tank cover and reattach the rear seat cushion.

6. Reconnect Battery and Test

• Reconnect the battery.
• Start the vehicle and check the fuel gauge for correct operation.