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Toyota, Lexus Reprogramming / Calibration CUW files
Author: carsoftos777 | 15-04-2025, 02:46 | Programs for cars and diagnostics | Views: 288 | Comments: 0 | Found a bug?
Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/control units are released as field troubleshooting procedures described in separate service bulletins. This bulletin details the Techstream ECU flash reprogramming process and describes the use of the Technical Information System (TIS) and the Calibration Update Wizard (CUW). Flash calibration updates can only be applied to the vehicle/ECU combination for which they are intended. The ECU has an internal security feature that prevents them from being programmed using information from another ECU.
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