Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2013 Subaru Outback Base, Standard TransFACTORY OEM SERVICE PROCEDURE

Knock Sensor: Installation

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Install the knock sensor to the cylinder block.
NOTE: The knock sensor should be installed so that the center of the connector is positioned at a 76.5 - 91.5° angle relative to the front of engine.

Tightening torque:

24 N.m (2.4 kgf-m, 17.7 ft-lb)

Fig 1: Identifying Knock Sensor Installation Position
Courtesy of SUBARU OF AMERICA, INC.
Connect the connector to the knock sensor.

Fig 2: Locating Knock Sensor Connector
Courtesy of SUBARU OF AMERICA, INC.
Install the air intake boot. < Refer to INSTALLATION , Air Intake Boot. >
Connect the battery ground terminal.

Fig 3: Connecting/Disconnecting Battery Ground Terminal
Courtesy 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.