2008 Lexus LS 460FACTORY OEM SERVICE PROCEDURE

How To Proceed With Troubleshooting

HINT:

*: Use the Techstream.

  1. VEHICLE BROUGHT TO WORKSHOP 
  2. INSPECT BATTERY VOLTAGE 

    Standard Voltage: 

    11 to 14 V 

    HINT:

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

  3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the communication system.

      Result 

      RESULT CHART

      Result Proceed To
      No DTCs output A
      DTCs output B

      HINT:

      The skid control ECU sends the signals of each warning light to CAN communication.

    B: PROCEED TO CAN COMMUNICATION SYSTEM 

    A: Go to next step 

  4. CHECK DTC AND FREEZE FRAME DATA* 
  5. CLEAR DTC AND FREEZE FRAME DATA* 
  6. PROBLEM SYMPTOM CONFIRMATION 
  7. DTC CHECK AND CLEAR* 
  8. PROBLEM SYMPTOM CONFIRMATION 

    Result 

    RESULT CHART

    Result Proceed To
    Symptom does not occur A
    Symptom occurs B

    B: GO TO STEP  11

    A: Go to next step 

  9. SYMPTOM SIMULATION 
  10. CHECK FOR DTC (OTHER THAN CAN AND MULTIPLEX COMMUNICATION SYSTEM DTC)* 

    Result 

    RESULT CHART

    Result Proceed To
    No DTCs output A
    DTCs output B

    B: GO TO STEP  13

    A: Go to next step 

  11. PROBLEM SYMPTOMS TABLE 

    NEXT: GO TO STEP  14

  12. DTC CHART 
  13. CIRCUIT INSPECTION* 
  14. IDENTIFICATION OF PROBLEM 
  15. REPAIR OR REPLACE 
  16. CONFIRMATION TEST* 

    NEXT: END 

Factory Service Tools

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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.

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