Based on what I found online, you are correct the brake controller port is not to the left of the steering column on your 2009 Lexus LX 570. We haven't done any installs with this vehicle, but I did some digging and what I found was that to access the port you will need to remove the lower dash panel, and the connector should be just up and to the right, taped to other wiring so it may be a chore to find, but once you do this will allow you to use the wiring adapter:
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