2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Fuel Pump: Removal

  1. DISCHARGE FUEL SYSTEM PRESSURE 
    1. Discharge fuel system pressure (See FUEL SYSTEM )
  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
  3. REMOVE REAR SEAT CUSHION ASSEMBLY  (See REMOVAL )
  4. REMOVE NO. 3 ROOM PARTITION PAD 
    1. Remove the clip and No 3 room partition pad.
    Fig 1: Identifying Room Partition Pad Clip
    G05287239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE NO. 2 REAR FLOOR SERVICE HOLE COVER 
    1. Remove the No 2 rear floor service hole cover and disconnect the fuel suction tube connector
    Fig 2: Identifying Rear Floor Service Hole Cover
    G05750054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE FUEL SUCTION WITH PUMP AND GAUGE TUBE ASSEMBLY 
    1. Disconnect the connector from the fuel suction with pump and gauge tube assembly
      Fig 3: Locating Fuel Suction With Pump And Gauge Tube Assembly Connector
      G05750055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect fuel pump tubes.
      NOTE: Before beginning this procedure, check for foreign matter on the joint clips. Clean if necessary.
      1. Remove the 2 tube joint clips, fuel tank main tube and fuel tank return vent tube
        NOTE:
        • Keep the O-rings free of foreign matter, as it becomes contaminated easily.
        • Do not use any tools in this procedure.
        • Do not forcefully bend or twist the tube.
        • Put the tube in a plastic bag to prevent damage and contamination.
        • If the fuel suction plate and tube are stuck together, pinch the tube and turn it carefully to disconnect it.
        • Be careful not to damage any clips. If a clip is damaged, replace it.
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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.