2008 Lexus GS 450hFACTORY OEM SERVICE PROCEDURE

Injector Driver: Installation

  1. INSTALL INJECTOR DRIVER 
    NOTE:
    • Be careful not to drop or strike the injector driver.
    • The injector driver is grounded at the bolt and nut. To ensure that it is grounded, clean all oil and foreign matter from the installation areas of the injector driver and engine before installing the injector driver.
    1. Install the injector driver with the bolt and 2 nuts.

      Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf) 

      Fig 1: Locating Injector Driver Nuts And Bolts
      G05286996Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the 4 injector driver connectors.
      1. Connect the 3 connectors with wire harness locks and the connector to the injector driver. Move the lock lever in the direction indicated by the arrow to lock the connector.
        NOTE: Connect the connector securely.
      Fig 2: Locating Injector Driver Connectors
      G05814306Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL NO. 1 ENGINE COVER 
    1. Install the cover with the 3 clips.
    2. Connect the 4 connectors.
    Fig 3: Locating Clips And Cover
    G05286994Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL AIR CLEANER INLET 
    1. Install the air cleaner inlet with the bolt.

      Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) 

      Fig 4: Locating Air Cleaner Inlet Bolt
      G05285875Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL COOL AIR INTAKE DUCT SEAL  (See INSTALLATION )
  5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  6. INSTALL SERVICE PLUG GRIP  (See INSTALLATION )
  7. PERFORM INITIALIZATION 
    1. Perform initialization (see INITIALIZATION ).
      NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
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.