2011 Lexus GX 460FACTORY OEM SERVICE PROCEDURE

Steering Lock System: Precaution: Precaution

  1. PRECAUTIONS WHEN CHECKING FOR DTCS 
    1. When the cable is disconnected from the negative (-) battery terminal, the DTCs stored in the steering lock actuator assembly (steering lock ECU) are cleared. Be sure to record any output DTCs immediately.
    2. Normally, with the engine switch off, even if the Techstream is connected to the vehicle, the information stored in smart access system with push-button start related ECUs (the certification ECU, power management control ECU, main body ECU, etc.) cannot be read. However, smart access system with push-button start DTCs and Data List information can be confirmed even if the engine switch is off using either of the two methods below:
      • Connect the Techstream to the vehicle, and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins (the Techstream screen changes when communication begins).
      • Connect the Techstream to the vehicle, select the vehicle type under manual mode, and then enter the following menus: Body Electrical / Smart Access / Trouble Codes.
  2. PRECAUTIONS WHEN REPLACING STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU) 
    1. If the steering lock actuator assembly (steering lock ECU) is replaced, be sure to confirm that the steering is unlocked by turning the steering wheel to the left and right before starting the engine. If the steering is locked for any reason, open and close a door with the engine switch off, and then unlock the steering lock by pressing the engine switch. This prevents the engine from starting while the steering is locked.
  3. PRECAUTION FOR REGISTRATION 
    1. If replacing any of the following parts, refer to the registration procedures. Refer to REGISTRATION .
      1. ID code box
      2. Certification ECU
      3. Steering lock actuator assembly (steering lock ECU)
      4. ECM
      5. Electrical key transmitter (key)
Chapter Navigation
Return to Chapter: Precaution
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.