Thank you for sharing this important experience, I don't know if your TOYOTA car uses a Neutral Stop sensor, which is for overdrive, if that's what you mean, many times when there is some wear on the inner track of its contacts. , it makes the light appear and flash intermittently, then when you turn the car off and on, it goes off, the light also flashes when a solenoid is not working properly, maybe due to low oil level, but that's how you indicate it. . , greetings.