why does my Toyota RAV4 Fifth Generation (2019-present) engine light keep flashing

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, torque wrench, multimeter, fuel injector cleaner.
• Ensure the vehicle is parked on a level surface and the engine is cool.

2. Retrieve Error Codes

• Connect the OBD-II scanner to the vehicle’s diagnostic port.
• Turn the ignition to the "ON" position without starting the engine.
• Record any trouble codes displayed and refer to a repair manual for specific diagnostic guidance.

3. Inspect and Replace Spark Plugs

• Tools Required: Socket set, torque wrench.
• Remove the engine cover if necessary.
• Disconnect the ignition coils and remove them using the socket set.
• Unscrew and remove the spark plugs.
• Inspect for wear; replace if necessary with OEM specifications.
• Reinstall spark plugs and ignition coils, tightening to manufacturer torque specifications.

4. Check and Replace Ignition Coils

• Tools Required: Socket set, multimeter.
• If spark plugs are in good condition, test ignition coils with a multimeter for resistance.
• Replace faulty ignition coils with new OEM parts.
• Reconnect all components securely.

5. Fuel Injector Cleaning

• Tools Required: Fuel injector cleaner, safety glasses.
• Use a fuel injector cleaning kit or pour a suitable fuel injector cleaner into the fuel tank.
• Follow the instructions on the cleaner for the correct ratio.
• Start the engine and let it run to allow the cleaner to cycle through the fuel system.

6. Check for Vacuum Leaks

• Visually inspect all vacuum hoses for cracks or disconnections.
• Use a smoke machine to detect leaks if available.
• Replace any damaged hoses and recheck engine operation.