2006 RX400 H
Holding in the ODO/Trip button and turning the key on while continuing to hold the button in worked like a charm. The middle display read "reseting" for about 3 seconds then "reset complete". This saved us a $745 bill from the dealer. I'll change the air filters and check the belts and fluid levels myself. This was also the fix when we went a little too far after the "oil change due" came on. Thanks for the info. :-)