2008 Lexus LX 570FACTORY OEM SERVICE PROCEDURE

Engine Control System - System Descriptions And Testing, On-Vehicle Inspection, Removal And Installation: ECM: Removal

  1. REMOVE ENGINE ROOM SIDE COVER LH  (See REMOVAL )
  2. REMOVE ENGINE ROOM SIDE COVER RH  (See REMOVAL )
  3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE:
    • w/ Navigation System:

    After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.

    • When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
  4. DISCONNECT CONNECTOR HOLDER BLOCK 
    1. Remove the 3 bolts and move the connector holder block so that the ECM can be removed in the next step.
    Fig 1: Locating Connector Holder Block Bolts
    G05628227Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE ECM 
    1. Raise the 2 levers while pushing the locks on the 2 levers.
      NOTE: Make sure that the lock levers are raised 90° as shown in the illustration before disconnecting the connectors. Failure to do this may cause the connectors to break.
    2. Disconnect the 2 connectors.
      Fig 2: Disconnecting Levers
      G05628228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 4 bolts and ECM.
    Fig 3: Locating ECM Bolts
    G05149564Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE GASKET 
    1. Peel off the gasket.
      Fig 4: Removing ECM Gasket
      G05757865Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Spray gasket remover or equivalent on the remaining tape of the gasket.
      NOTE: When using gasket remover or equivalent, cover the ECM connectors with a cloth.
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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