2008 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE

How To Proceed With Troubleshooting

HINT:

  • Use the following procedures to troubleshoot the power mirror control system.
  • *: Use the Techstream.
  1. VEHICLE BROUGHT TO WORKSHOP 
  2. INSPECT BATTERY VOLTAGE 

    Standard voltage: 11 to 14 V 

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

  3. INSPECT ELECTRIC POWER CONTROL SYSTEM* 
    1. Using the Techstream, check the electric power control system's load control history (see OPERATION CHECK ).
  4. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Use the Techstream to check if the CAN communication system is functioning normally.

      Result: 

      RESULT CHART

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

    B: Go to CAN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to Next Step 

  5. PROBLEM SYMPTOMS TABLE 

    Result: 

    RESULT CHART

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

    B: Go to step  7

    A: Go to Next Step 

  6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Operation Check (see OPERATION CHECK  )
    2. DATA LIST / ACTIVE TEST (see DATA LIST / ACTIVE TEST  )
    3. Terminals of ECU (see TERMINALS OF ECU  )
  7. ADJUST, REPAIR OR REPLACE 
  8. 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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