Interesting video. Can it work on the awd RX?

http://www.youtube.com/watch?v=XMN-WEWM5IE


Also found these written instructons:
Transition to the service mode (TRAC and VSC OFF mode).
The TRAC and VSC systems can be turned off by following the procedures below:

When using the parking brake and brake pedal:
1) Check that the IG is off and the shift lever position is at P.
2) Start the engine after turning the IG to the ON position.
3) Operate the following steps 4 to 8 within 30 seconds after engine start.
4) Turn the parking brake switch on.
5) Depress and release the brake pedal twice.
6) Turn the parking brake switch on and off twice while depressing the brake pedal.
7) Depress and release the brake pedal twice while the parking brake switch is on.


Notice:
Steps 6 and 7 should be performed within 15 seconds each.
8) Check that the VSC warning light and slip indicator are turned on. If they are not turned on, start over from step 1.
9) The brake control system will return to the normal mode by turning the IG to the ON position from off.


For details transition to the service mode, see the 2005 Avalon Repair Manual (Pub. No. RM1169U).

Now these are for avalon, so not sure if they apply to us!

 

I tried this on a 2007 Lexus RX 350 AWD model (which unfortunately does NOT have the TRAC disable button) and am sad to report that it does NOT seem to work. I tried this perhaps 5-6 different times, even watching the video of this done on an iPad and following the exact same motions. The only thing that happened was my check engine light blinked a few times before finally turning off. I have not yet tried removing the sensor attached to the air filter yet, maybe this will work.