Since you disconnected the ECU from power, the windows must be "relearned" Use the switch on the passenger side and roll the window up and down several times. After doing this, the driver's switches should work to lower all windows.

 

yes,
Try it, but still flashing the light on the switch, and the window does not go down or up

 

Read this thread carefully

https://www.clublexus.com/forums/is-...isconnect.html