On Toyota and Lexus vehicles if the check engine light comes on, then the other three lights that you have will also illuminate until the problem with the check engine light is taken care of. I would recommend to take the vehicle in a mechanic and have them run a full diagnostic on it to determine the problem with the check engine light.
RepairPal Certified shops can diagnose and repair your 2006 Lexus GX470. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.