2011 Lexus GS 460FACTORY OEM SERVICE PROCEDURE

SFI System: Precaution: Precaution

  1. INITIALIZATION 
    NOTE:
    • Refer to INITIALIZATION and perform the AT initialization when replacing the automatic transmission assembly, engine assembly or ECM.
    • Refer to REGISTRATION  and perform the REGISTRATION (VIN registration) when replacing the ECM.

    HINT: 

    Initialization cannot be completed by disconnecting and reconnecting the cable of the negative (-) battery terminal.

  2. FOR USING TECHSTREAM 
    WARNING:

    Observe the following items for safety reasons:

    • Read its instruction books before using the Techstream.
    • Prevent the Techstream cable from being caught on the pedals, shift lever and steering wheel when driving with the Techstream connected to the vehicle.
    • When driving the vehicle for testing purposes using the Techstream, 2 persons are required. One is for driving the vehicle, and the other operates the Techstream.
  3. DISCONNECT AND RECONNECT CABLE OF NEGATIVE BATTERY TERMINAL 
    Fig 1: Identifying Battery Cable
    GTY107922Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Before performing work on electronic components, disconnect the cable from the negative (-) battery terminal in order to prevent it from shorting and burning out.
    2. Before disconnecting and reconnecting the battery cable, turn the engine switch off and the headlight dimmer switch off. Then loosen the terminal nut completely. Do not damage the cable or terminal.
    3. When the battery cable is disconnected, the clock and radio settings and stored DTCs are erased. Therefore, before disconnecting the battery cable, make a note of them.
      NOTE:
      • When the cable is disconnected from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected.
      System name See procedure
      Intuitive Parking Assist System Refer to INITIALIZATION
      Theft Deterrent System
      Variable Gear Ratio Steering System
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.