Is your Check Engine Light illuminating on your Lexus instrument cluster even if you fix the problem? Learn how to reset the check engine light by using an OBD-II scanner. This procedure clears the Diagnostic Trouble Codes (DTCs).


What you need


Follow these steps to reset the Lexus check engine light.

  1. Park the vehicle and set the emergency brakes. Vehicle Park
  2. Locate the OBD-II port under the dashboard. Locate OBD
  3. Plugin your scanner.Plug in OBD
  4. Turn on the ignition but don’t start the engine. Press it twice on vehicles with Start/Stop buttons without touching the brake pedal. Turning Ignition
  5. Allow the scanner to turn on and connect to the car.
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  6. Select OBD-II, then READ CODES.  Make sure there are no current codes. If the problem has been fixed, only stored codes should be present.

Go back and select CLEAR FAULT CODES. Press enter.

Turn off the ignition, wait ten seconds, and restart the engine. Check engine light should be on.

This procedure should be performed after a repair. If the Lexus check engine light doesn’t turn off, a problem has not been fixed yet. Clearing Lexus fault codes without fixing the problem is not recommended. Depending on the issue, the check engine light will come back immediately or within a few days.

Check engine light can also be reset by disconnecting the battery for a few minutes. A check engine can also reset if no fault codes are present. Typically it takes several driving cycles or about four to five days for the Lexus check engine light to reset.


Hundreds of possible problems can cause the check engine light on your LEXUS to stay on. The most common issues are spark plugs, oxygen sensors, and catalytic converter failure. Instead of guessing what is wrong, use an OBD-II scanner to read the fault codes.

We hope you find the Reset Lexus Check Engine Light | Clear DTCs guide helpful. Check these troubleshooting and repair guides for more help on your Lexus.

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