The driver's door window switch in the RX300 was working intermittently, I could tell something had given up as the button wasn't as stiff as the others in the bank of master controls, and recently the power door lock would unlock but not lock. Today, I took the switches all apart and found a tiny plastic part that was broken. The part rides on a spring under the rocker type button, well, it was broken. I removed the part from the rear passenger side switch, put a little grease on the pivot parts, did the same for the power lock button, put it all back together and it is all working properly once again.
I just put new tires on this old RX today, so I am keeping it around a while, trying to keep ahead of the issues.
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