How can I resolve performance issues in my 2022 Toyota Highlander?

Resolving Performance Issues in a 2022 Toyota Highlander

Repair Instructions

1. Replacing Spark Plugs:

   • Tools Required: Spark plug socket, ratchet, torque wrench.
   • Steps:
     • Remove the ignition coils (if applicable) to access the spark plugs.
     • Use the spark plug socket to remove and replace the old spark plugs with new ones, following the manufacturer’s specified torque settings.

2. Cleaning MAF Sensor and Throttle Body:

   • Tools Required: MAF cleaner, throttle body cleaner, rags.
   • Steps:
     • Disconnect the MAF sensor and gently spray the cleaner onto the sensor element.
     • Allow it to dry completely before reconnecting.
     • Remove the throttle body and clean the interior surfaces with throttle body cleaner and a soft cloth.

3. Fuel System Cleaning:

   • Tools Required: Fuel injector cleaner, fuel treatment.
   • Steps:
     • Add a quality fuel injector cleaner to a full tank of gas to clean the injectors.
     • Run the vehicle to allow the cleaner to cycle through the system.

4. Inspecting and Replacing the Air Filter:

   • Tools Required: Basic hand tools.
   • Steps:
     • Remove the air filter housing cover and check the air filter.
     • If dirty, replace it with a new one, ensuring it is seated properly.

5. Addressing DTCs:

   • Steps:
     • Based on the retrieved codes, follow the manufacturer's repair manual for specific troubleshooting and repair instructions for those codes.
     • Clear the codes with the OBD-II scanner after repairs are completed and take the vehicle for a test drive to ensure the issue is resolved.

Final Checks

• After performing repairs, monitor the vehicle’s performance over the next few days.
• Check for any reoccurrence of symptoms or warning lights.
• Ensure all fluid levels are topped off and in good condition (oil, coolant, etc.).

By following the above steps, you should be able to diagnose and resolve performance issues in your 2022 Toyota Highlander effectively. If issues persist after these checks, it may be necessary to consult with a professional technician for further diagnosis.