Toyota and Lexus Firmware Z-0001-13.cuw

Z-0001-13.cuw is a Toyota or Lexus firmware catalog identifier. The identifier alone does not reliably establish the control module, vehicle application, or software function associated with this file.

The complete identifier, including the -13 suffix, should be retained when comparing the entry with a vehicle’s calibration or service information. A similar filename prefix is not enough to establish that two files control the same system or are interchangeable.