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When this light comes on, it’s important to get your vehicle inspected by a professional as soon as possible to prevent any potential damage. It’s hard to say exactly what the issue is without a proper diagnosis. Your Lexus dealer or a trusted mechanic should be able to read the specific error code from the OBD system and determine the exact cause of the problem. That being said, I should also advise you to check or have checked your battery. Sometimes a failing battery or even a cell with no visible liquid in it can cause very strange warning lights to illuminate.