Lexus RX 350 Firmware 89663-48652
A catalog reference for Lexus RX 350 2GR-FE firmware 89663-48652 and its likely engine control role.
89663-48652 is listed as firmware for a Lexus RX 350 with the 2GR-FE engine. Its 89663 part-number family is associated with Toyota and Lexus engine control calibrations, making an engine control module association likely.
The engine control module manages functions such as fuel injection, ignition timing and electronic throttle operation. Those controls affect how the engine responds to the accelerator, runs under changing loads and meets emissions requirements. The catalog entry does not establish which of those functions, if any, changed in this particular calibration.
Catalog identification
The descriptive filename is Lexus RX350 2GRFE 89663-48652.bin. A second entry, 89663-48652.bin, uses the same identifier without a vehicle or engine label. Neither filename names a modified variant or a specific feature.
The RX 350 and 2GR-FE description provides useful identification context, but it does not establish a model year, market or compatibility with a particular vehicle.