I've been looking for this... where is it?
I missed with this for several weeks as well. On my Lexus SC300 the valet lock is next to the trunk release. After checking all the fuses I final did a final check on the valet lock out and that was it. Not sure what caused it trigger, and since I was the only driver and I knew I didn't engage it, I didn't check it. I had part of the dash out and the battery removed for other things, so maybe somehow it got engaged. Felt like a moron, when it turned out to be something so simple, but at least the trunk release works.