Toyota 54814100-L04ii.cuw Firmware Catalog Reference

54814100-L04ii.cuw is a Toyota automotive firmware catalog filename. The .cuw extension identifies a calibration update file, while the complete identifier distinguishes it from other files with similar prefixes.

Calibration identification

The filename alone does not reliably establish the control module, vehicle application, or software function. It also does not identify a stock or modified variant or document a change introduced by this revision. A matching service record or controller catalog is needed to associate this exact calibration with a vehicle system.