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2017 Subaru Outback
2015 - 2019 Subaru Outback
Flat 4 2.5L
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  • Guides
  • /
  • Subaru Outback
  • /
  • 2017
  • /
  • How to Replace the Starter Motor on a 2015-2019 Subaru Outback (Engine: Flat 4 2.5L)
How to Replace a Starter in a Subaru Crosstrek, Forester, Impreza, Outback, and Legacy

How to Replace a Starter in a Subaru Crosstrek, Forester, Impreza, Outback, and Legacy

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10mm
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12mm
12mm
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or (7/16")
14mm
14mm
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or (17/32")
3/8
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How to Replace the Starter Motor on a 2015-2019 Subaru Outback (Engine: Flat 4 2.5L)

Step-by-step instructions with tools, parts, safety tips, and torque specs

How to Replace the Starter Motor on a 2015-2019 Subaru Outback (Engine: Flat 4 2.5L)

Step-by-step instructions with tools, parts, safety tips, and torque specs for 2015, 2016, 2017, 2018, 2019

Orion
Orion

🔧 Starter Motor - Replacement

The starter on your Outback is mounted low on the engine-to-transmission area and is reached from the top after removing the air intake path. This job is straightforward once access is opened up, but space is tight and the battery must be disconnected first.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours


⚠️ Safety & Precautions

  • Disconnect the negative battery cable before touching the starter. The starter has direct battery power.
  • Keep metal tools away from the positive cable and starter terminal. A short circuit can cause sparks or burns.
  • Let the engine cool before starting. Intake parts and nearby components can be hot.
  • If the vehicle has a radio code or memory settings, save them before disconnecting the battery.
  • Support any removed intake parts carefully so they do not crack or fall into the engine bay.

🔧 Required Tools

You'll need the following tools for this repair:

  • 10mm socket
  • 12mm socket
  • 14mm socket
  • Ratchet
  • Long extension
  • Swivel extension
  • Torque wrench
  • Flathead screwdriver
  • Trim clip tool
  • Battery terminal wrench
  • Gloves
  • Safety glasses

🔩 Required Parts

HowToo sells all the parts you need for this repair:

  • Starter motor - Qty: 1
  • Starter mounting bolt(s) - Qty: 1 set
  • Intake duct gasket or seal - Qty: 1
  • Battery terminal protector spray - Qty: 1

📋 Before You Begin

  • Park on level ground and set the parking brake.
  • Shift into Park and turn the ignition off.
  • Disconnect the negative battery terminal first using a 10mm wrench or socket.
  • Wait at least 2 minutes before working near the starter wiring.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect the battery

  • Use a 10mm wrench or 10mm socket to remove the negative battery cable.
  • Move the cable aside so it cannot touch the battery terminal.

Step 2: Remove the intake ducting

  • Use a flathead screwdriver and trim clip tool to remove the air intake duct and any clips in the way.
  • Loosen any intake hose clamps with a 12mm socket if equipped.
  • Lift the duct out carefully to expose the top of the engine.

Step 3: Disconnect starter wiring

  • Find the starter electrical connections near the transmission bellhousing.
  • Use a 10mm socket to remove the battery cable nut from the starter terminal.
  • Disconnect the smaller trigger connector by hand or with a flathead screwdriver if the lock tab is tight.
  • Do not force the connector.

Step 4: Remove the starter mounting bolts

  • Use a 14mm socket, long extension, and swivel extension to remove the starter mounting bolts.
  • Support the starter with one hand as the last bolt comes out.
  • Torque on installation: 44 Nm (32 ft-lbs)

Step 5: Remove the starter motor

  • Lower the starter out of the engine bay slowly.
  • If it sticks, wiggle it gently by hand. Do not pry on the housing.

Step 6: Install the new starter motor

  • Position the new starter in place by hand.
  • Start both mounting bolts by hand before tightening.
  • Use a 14mm socket and torque wrench to tighten the bolts to 44 Nm (32 ft-lbs).

Step 7: Reconnect the starter wiring

  • Reinstall the main battery cable and tighten the nut with a 10mm socket.
  • Torque to 7 Nm (62 in-lbs)
  • Reconnect the small trigger connector until it clicks.

Step 8: Reinstall intake parts

  • Reinstall the intake duct and clamps using a 12mm socket and flathead screwdriver.
  • Make sure all hoses and clips are fully seated.

Step 9: Reconnect the battery and test

  • Reconnect the negative battery cable with a 10mm wrench or socket.
  • Start the engine and listen for smooth cranking.
  • Check that no warning lights are present.

✅ After Repair

  • Start the engine 2-3 times to confirm normal starter operation.
  • Check that the battery terminals are tight.
  • Look for any loose intake ducts or air leaks.
  • If cranking is slow, recheck the battery condition before suspecting the starter again.

💰 DIY vs Shop Cost

Shop Cost: ₹18,000-₹35,000 (parts + labor)

DIY Cost: ₹8,000-₹18,000 (parts only)

You Save: ₹10,000-₹17,000 by doing it yourself!

Shop labor rates vary but typically run ₹4,000-₹8,000/hour. This repair takes a shop approximately 2-4 hours.


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