how to reset the check engine light on Toyota Highlander Fourth Generation (2020-present)?

Toyota Highlander Fourth Generation (2020-present)

Error Codes

10-20 minutes

Time

easy

Difficulty

medium

Severity

2 min read

392 words

Problem Statement

Learn how to reset the check engine light on your 2020-present Toyota Highlander. Step-by-step guide with diagnostic steps and safety tips.

Affected Component

Electrical

Estimated Time

10-20 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in park (or neutral) with the parking brake engaged before starting the procedure.

Symptoms

•Check engine light is illuminated on the dashboard
•Vehicle may run normally or show no noticeable symptoms
•Error codes may be present in the vehicle's computer system

Diagnostic Steps

1
Use an OBD-II scanner to check for any existing error codes.
2
Address any underlying issues that triggered the check engine light.
3
Confirm that the issue has been fully resolved and that the vehicle is functioning properly.

Solution

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Owner's manual
•Notebook for recording codes

Parts Required

•None specifically for resetting, but repair parts may be required if issues are identified.

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Solution

1. Preparation

Gather necessary tools: OBD-II scanner, owner's manual (for reference), and a notebook for recording any codes.
Ensure the vehicle is in a well-ventilated area and the engine is off.

2. Connect OBD-II Scanner

Locate the OBD-II port, usually found under the dashboard on the driver’s side.
Plug the OBD-II scanner into the port securely.

3. Read Error Codes

Turn the ignition key to the "ON" position without starting the engine.
Follow the scanner's prompts to access and read error codes.
Record any codes for reference.

4. Clear Codes

Once codes are read, navigate to the option to clear or reset codes on the scanner.
Confirm the action to clear the codes and reset the check engine light.

5. Disconnect Scanner

Unplug the OBD-II scanner from the port.
Turn off the ignition and then restart the vehicle to ensure the check engine light remains off.