2008 Lexus ES 350FACTORY OEM SERVICE PROCEDURE

Engine Control System - System & Component Testing, Removal, Inspection & Installation: ECM: Removal

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
  2. REMOVE COOL AIR INTAKE DUCT SEAL  (See REMOVAL )
  3. REMOVE ENGINE ROOM SIDE COVER LH  (See REMOVAL )
  4. REMOVE ENGINE ROOM SIDE COVER RH  (See REMOVAL )
  5. REMOVE FRONT SUSPENSION UPPER CENTER BRACE  (See REMOVAL )
  6. REMOVE ECM 
    1. Remove the 3 nuts.
      Fig 1: Locating ECM Nuts
      G04973912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 2 ECM connectors and remove the ECM.
      1. Raise the 2 levers while pushing the locks on the 2 levers, and disconnect the 2 ECM connectors.
        NOTE: After disconnecting the connector, make sure that dirt, water and other foreign matter do not contact the connecting part of the connector.
      2. Remove the ECM.
        Fig 2: Locating ECM Connectors Levers
        G04973913Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 4 screws and 2 ECM brackets.
      Fig 3: Locating ECM Brackets And Screws
      G04973914Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.