Lexus RX 350 2GR-FKS Firmware 89663-0E542
A catalog overview of Lexus RX 350 F SPORT firmware 89663-0E542 and its engine control module family.
89663-0E542 is an engine control module calibration identifier cataloged for a Lexus RX 350 F SPORT with the 2GR-FKS V6 engine. The 89663 part-number family is associated with Toyota and Lexus engine control software.
The engine control module manages the engine’s operation using sensor inputs and calibrated settings. On a 2GR-FKS, its responsibilities include fuel delivery, ignition timing and variable valve timing. These controls affect how the engine starts, responds to the accelerator and operates under changing loads.
What the catalog entry identifies
The filename RX350 F-Sport 2GR-FKS 89663-0E542.bin identifies the vehicle designation, engine and calibration number. It does not name a modified variant or a specific change to the engine calibration. The identifier alone does not establish the vehicle’s model year or confirm compatibility with another RX 350.