2009 Lexus LS 600hLFACTORY OEM SERVICE PROCEDURE

How To Proceed With Troubleshooting

HINT: 

  • Use the following procedures to troubleshoot the steering lock system.
  • *: Use the Techstream.
  1. VEHICLE BROUGHT TO WORKSHOP 

    NEXT: Go to next step 

  2. INSPECT BATTERY VOLTAGE 

    Standard voltage

    11 to 14 V

    If the voltage is below 11 V, recharge or replace the battery before proceeding.

    NEXT: Go to next step 

  3. CHECK DTC* 
    1. Check for DTC. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC is output A
      DTC is not output B

      A → Go to step 6 

      B: Go to next step 

  4. PROBLEM SYMPTOMS TABLE 
    RESULT

    Result Proceed to
    Fault is not listed in problem symptoms table A
    Fault is listed in problem symptoms table B

    B → Go to step 6 

    A: Go to next step 

  5. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. TERMINALS OF ECU. Refer to TERMINALS OF ECU .
    2. DATA LIST / ACTIVE TEST. Refer to DATA LIST / ACTIVE TEST .

      NEXT: Go to next step 

  6. REPAIR OR REPLACE 

    NEXT: Go to next step 

  7. CONFIRMATION TEST 

    NEXT → END 

Factory Service Tools

Use the Manual With the Right Hardware

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

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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.