Toyota and Lexus Firmware L-0013-09.cuw

L-0013-09.cuw is a Toyota or Lexus firmware catalog identifier. The complete code identifies this entry, but it does not reliably establish a particular control module, vehicle system, or software function.

The .cuw extension identifies the file format, not the vehicle application or a specific change in behavior. A matching controller record or service bulletin would be needed to associate this identifier with a documented calibration and its intended use.