A couple of questions. Where are you (what part of the world)?
Does the light come on as soon as the car moves a couple of feet, or does it come on at 5 or 10 MPH, or does it just come on at random times?
It appears that all the sensors are working now so the problem is elsewhere.
Does the speedometer seem to work correctly?

Paul

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84 500 SEL (307,xxx miles)