Lexus TSB #L-SB-0021-14 Rev

2013 Lexus GS 350

TSB Document:

Affected Component: EQUIPMENT:ELECTRICAL

Summary
TSB: Flash reprogramming allows the ECU software to be updated without replacing the ECU. Flash calibration updates for specific vehicle models/ECUs are released as field-fix procedures described in individual Service Bulletins. This bulletin details the Techstream ECU flash reprogramming process and outlines 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. ECUs have internal security that will not allow them to be programmed with another ECU's information.

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Date Published
OCT 23, 2014
NHTSA TSB #
10109449
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