2016 Subaru Crosstrek BaseFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Removal

  1. Disconnect the ground cable from battery.
    Fig 1: Disconnecting Ground Cable From Battery
    G08317298Courtesy of SUBARU OF AMERICA, INC.
  2. Remove the clip (A), and loosen the clamps (B) and (C) securing the air intake boot.
    Fig 2: Identifying Air Intake Boot Clip And Clamps
    G09475465Courtesy of SUBARU OF AMERICA, INC.
  3. Remove the air intake boot from the air cleaner case (rear) and throttle body, and move it to the left side wheel apron.
    Fig 3: Removing Air Intake Boot From Air Cleaner Case (Rear) And Throttle Body
    G09476922Courtesy of SUBARU OF AMERICA, INC.
  4. Disconnect the connector (A) from the knock sensor, and remove the knock sensor from the cylinder block.
    Fig 4: Identifying Knock Sensor Connector With Bolt
    G08315408Courtesy of SUBARU OF AMERICA, INC.
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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