why does my Toyota Highlander XU70 (2020-Present) have a fuel smell inside the cabin

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the battery for safety.

2. Inspect and Replace Fuel Filler Cap

• Tools Required: None
• Remove the fuel filler cap and inspect for any cracks or damage.
• If damaged, replace it with a new OEM fuel filler cap.

3. Repair Fuel Leaks

• Tools Required: Wrench set, socket set, fuel line wrench
• Identify the source of the leak (fuel lines, injectors, or tank) based on the earlier inspection.
• For leaking fuel lines:
  • Use a wrench to loosen and remove the affected section of the fuel line.
  • Replace it with a new line, ensuring proper fit and secure connections.
• For leaking injectors:
  • Remove the necessary engine components to access the injectors.
  • Replace any faulty injectors and ensure O-rings are properly seated.
• For a leaking fuel tank:
  • Empty the tank if necessary.
  • Remove the tank and inspect for corrosion or damage.
  • Repair or replace the tank as needed.

4. Reassemble and Test

• Reconnect any components removed during the process.
• Reconnect the battery.
• Start the engine and check for any fuel odors or leaks.