Lexus GX 460 Firmware 89663-60D40: EVAP and SAP Modifications
Explore Lexus GX 460 89663-60D40 engine calibration labels, including EVAP and secondary air pump modifications.
89663-60D40 is an engine control calibration associated in the catalog with the Lexus GX 460 and its 1UR-FE engine. The engine control module uses calibration software to manage engine operation and emissions-related systems. One named modified variant identifies changes to evaporative emissions and secondary air injection functions.
What the named modification does
The catalog entry Lexus GX460 1URFE 89663-60D40_ST1_E2_EVAP_SAP OFF REMOVE CONNECTORS SV 5000 p. describes a modified version rather than a stock calibration. Its EVAP label refers to the evaporative emissions system, which captures fuel vapors and meters them into the engine for combustion. SAP refers to secondary air injection, which supplies air to the exhaust during certain operating conditions to help reduce emissions.
The filename labels both functions as off and includes REMOVE CONNECTORS. In practical terms, it identifies a calibration intended to alter how the controller handles those emissions systems, alongside a connector-removal note. The filename alone does not establish the exact software changes or which connectors are involved.
ST1 identifies a Stage 1 modified variant, while E2 is another variant label. The phrase SV 5000 p. is also part of this filename, but its precise meaning is not established by the catalog name.
Other 89663-60D40 catalog files
The related files SW#89663-60D40- MOD_E2.bin, 89663-60D40-_MOD_E2.bin and 89663-60D40-_MOD.bin are labeled as modified files. The two MOD_E2 names share the E2 label with the longer entry, but their filenames do not individually specify EVAP or SAP changes. The catalog does not identify a stock file or establish that the modified files are interchangeable.
For diagnostics, the distinction matters: an engine controller's normal emissions-system monitoring is not necessarily representative of a modified calibration. A filename can help identify the calibration family and stated variant, but it does not establish the full contents or compatibility of a particular file.