This is from this forum September, 2013 by ElSupreme. Don't know if it helps:
ElSupreme, Sep 27, 2013
I am pretty sure all cars made now have to have an OBDII port. And they are required to be near the steering wheel. The one in the Model S is directly above the dead pedal, under the steering wheel, as shown in this picture.
ElSupreme, Sep 27, 2013
I am pretty sure all cars made now have to have an OBDII port. And they are required to be near the steering wheel. The one in the Model S is directly above the dead pedal, under the steering wheel, as shown in this picture.