Toyota and Lexus Firmware 30CJ5400.cuw

30CJ5400.cuw is a Toyota or Lexus automotive firmware catalog identifier. The filename alone does not establish the control module, vehicle application, or software function associated with it.

Identifying the catalog entry

The complete identifier, including the .cuw extension, distinguishes this entry from similarly named firmware. It should not be treated as proof of compatibility with a particular vehicle or controller.

Vehicle identification, the installed module’s part number, and applicable Toyota or Lexus service information are needed to establish the firmware’s application and any changes associated with its revision.