Toyota and Lexus Firmware 30435100-ii.cuw

30435100-ii.cuw is a Toyota or Lexus firmware catalog identifier. The complete identifier is the distinguishing detail for this entry, but it does not reliably establish the control module, vehicle application, or software function on its own.

The .cuw extension identifies the file format rather than a specific vehicle system. A matching calibration or service record is needed to associate this entry with a controller and determine what the software controls.