Hi,
I had a problem with my transfer indicator switch. The local Toyota dealership wanted $90 for the part and about 1 week to get it. I had success with just cleaning the switch instead of having to buy a new. Just finished a write-up on it in case anyone's interested: Transfer Indicator Switch Problem with 4WD Toyota/Lexus Center Differential Lock (http://monkeeworks.com/goCDL)

http://www.monkeeworks.com/projects/auto/LX470.ctrDiffSwitch/xferSwtchPartDiagramAction.v2.0.gif

Thanks,
Clifford Arrow
http://monkeeworks.com (http://monkeeworks.com/)