how to fix fuel pump problems in Toyota Highlander Third Generation (2014-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.

2. Access the Fuel Pump

• Tools Required: Socket set, screwdriver, fuel line disconnect tool.
• Remove the rear seat or access panel to reach the fuel pump assembly.
• Disconnect any electrical connectors and fuel lines from the fuel pump assembly.

3. Remove the Fuel Pump

• Tools Required: Torque wrench, container for fuel drainage.
• Remove the retaining ring securing the fuel pump assembly to the tank.
• Carefully lift the fuel pump assembly out of the tank, allowing any residual fuel to drain into the container.

4. Inspect and Replace

• Inspect the fuel pump for signs of wear, damage, or blockage.
• If necessary, replace the fuel pump with a new unit, ensuring it matches OEM specifications.
• Clean the fuel filter and inspect the strainer for debris.

5. Reinstallation

• Reinstall the fuel pump assembly into the tank, ensuring proper alignment.
• Secure it with the retaining ring and reconnect the electrical connectors and fuel lines.
• Replace the access panel or rear seat.

6. Final Steps

• Reconnect the negative battery terminal.
• Reinstall the fuel pump relay and turn the ignition to the "ON" position several times to prime the system.
• Start the engine and check for leaks around the fuel lines and pump assembly.