Thanks for your interest. I haven't yet taken the door apart but, the Lexus manual states (pg. BE-76) that there is a "Door Courtesy Switch" internally mounted in each door and located below the exterior door handle (about half way between the handle and the bottom of the door). The manual implies the purpose of the switch is only to manage the interior courtesy lights when a door is opened; that is, no comment about any connection to the movement of the steering wheel.
Also, the steering wheel mechanism seems to be managed only by the switches on the steering wheel column and the ignition switch; meaning, once the ignition key is inserted, if the system switch is in the depressed position, the automatic steering wheel adjustment mechanism operates whether or not the door is open.
I could not find any pin switch in the door jam.
Does this help? Have a good day.
Friday, April 9th, 2010 AT 7:36 PM