I would bet that the TESLA does not have an actual "OBD II" port, as there is no equipment on the car that reflects OBD II requirements. Remember - OBD (onboard diagnostics) II ports monitor engine and emissions equipment - the TESLA has none. Other manufacturers have different ports that directly plug into the computers, but the information is not OBD information.
I hate bringing this up, but regarding the warranty issue that was being discussed in the previous page or two, many manufacturers have propriatory information on their cars that they do not share with aftermarket shops. On my BMW -many of the diagnostics are not available to independent shops. In fact, on new BMWs, one has to go back to the dealer to have the battery changed, as taking out a battery has a major impact on the computer.