why does my Toyota Highlander XU70 (2020-Present) have poor gas mileage

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to ensure safety during the repair.

2. Replace Air Filter

• Tools Required: Screwdriver set, new air filter.
• Remove the air intake cover by unscrewing the screws.
• Take out the old air filter and inspect it for dirt and damage.
• Install the new air filter securely and reattach the air intake cover.

3. Clean Fuel Injectors

• Tools Required: Fuel injector cleaner, safety goggles, gloves.
• Disconnect the fuel injector connectors.
• Use a fuel injector cleaning kit to clean each injector according to the manufacturer's instructions.
• Reconnect the injectors and ensure all connections are secure.

4. Check Tire Pressure

• Tools Required: Tire pressure gauge, air compressor.
• Measure the tire pressure for all four tires and compare against the manufacturer's specifications.
• Inflate any under-inflated tires to the recommended pressure.
• Inspect tires for uneven wear and replace if necessary.

5. Inspect Exhaust System

• Tools Required: Jack and jack stands, flashlight.
• Raise the vehicle using the jack and secure it with jack stands.
• Visually inspect the exhaust system for any signs of leaks or damage.
• Use an exhaust leak detector if necessary to confirm the integrity of the system.