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To clear the check system light on a Lexus GS350 in the U.S., you'll need to use an OBD scan tool connected to the vehicle's OBD port. The OBD-II system is like a built-in computer that tracks emissions, mileage, speed, and other car data. This system is linked to the Check Engine light, which comes on when an issue is detected. The computer stores Diagnostic Trouble Codes (DTC) related to the problem. At stores like Advance Auto or Auto Zone, you can use their OBD scan tool for free to access and clear these codes.
In order to clear the check engine light on a Lexus GS350, you should use an OBD scan tool by plugging it into the vehicle's OBD port and then follow the on-screen instructions to reset the light.