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Starter Replacement | 2010-2021 Subaru Forester, Impreza, WRX, Crosstrek

Starter Replacement | 2010-2021 Subaru Forester, Impreza, WRX, Crosstrek

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Safety
Safety
Glasses
Nitrile
Nitrile
Gloves
Wheel Chocks
Wheel Chocks
10mm
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or (3/8")
12mm
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How to Replace the Starter Motor on a 2014-2018 Subaru Forester (Step-by-Step Guide)

Tools, parts list, safety tips, and torque specs for a smooth DIY starter replacement

How to Replace the Starter Motor on a 2014-2018 Subaru Forester (Step-by-Step Guide)

Tools, parts list, safety tips, and torque specs for a smooth DIY starter replacement for 2014, 2015, 2016, 2017, 2018

Orion
Orion

🔧 Forester - Starter Motor Replacement

The starter motor is what cranks your engine when you turn the key/start button. On your Forester, it sits on top of the transmission bellhousing, and you’ll typically remove the top-mount intercooler to reach it safely and comfortably.

Difficulty Level: Intermediate | Estimated Time: 1.5-3.0 hours


⚠️ Safety & Precautions

  • 🛑 Disconnect the battery before touching the starter wiring (the main cable is always “live”).
  • 🔥 Let the engine cool fully; the turbo/intercooler area gets very hot.
  • 🧤 Wear gloves and safety glasses; you’ll work near sharp clamps and brackets.
  • ⚡ Do not let a tool bridge between the starter power terminal and metal parts.

🔧 Required Tools

You'll need the following tools for this repair:

  • Safety glasses
  • Mechanic gloves
  • Wheel chocks
  • Fender cover
  • 10mm socket
  • 12mm socket
  • 14mm socket
  • 3/8" ratchet
  • 3/8" torque wrench (10–80 Nm range)
  • 6" extension
  • 12" extension
  • Flathead screwdriver
  • Trim clip tool
  • Needle-nose pliers
  • Flashlight
  • Magnetic pickup tool

🔩 Required Parts

HowToo sells all the parts you need for this repair:

  • Starter motor - Qty: 1
  • Dielectric grease - Qty: 1
  • Anti-seize compound - Qty: 1

📋 Before You Begin

  • Park on level ground, shift to Park, and set the parking brake.
  • Open the hood and install a fender cover to protect paint.
  • Have a small tray ready for bolts and hose clamps.
  • Assumption: This procedure matches the common top-mount-intercooler layout on your Forester; torque values listed are typical—verify with a service manual if available.

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect the battery

  • Use a 10mm socket to loosen the negative battery terminal clamp.
  • Lift the negative cable off and tuck it aside so it cannot spring back.
  • Tip: Wrap the terminal with a glove.

Step 2: Remove the intercooler (for access)

  • Use a flathead screwdriver to loosen the hose clamps on the intercooler couplers (inlet/outlet).
  • Use a 12mm socket and 3/8" ratchet to remove the intercooler mounting bolts/brackets.
  • Use needle-nose pliers to release any small hose clamps (if equipped), then carefully pull the hoses off.
  • Wiggle the intercooler up and out. Use a flashlight to confirm no hose is still attached.
  • Tip: Cover open pipes with a clean rag.

Step 3: Locate the starter and identify the two connections

  • Use a flashlight to find the starter on top of the transmission bellhousing.
  • You’ll see:
  • The thick battery cable on a stud (held by a nut).
  • The small solenoid connector (a small plug that triggers the starter).
  • Tip: Take a quick photo before disassembly.

Step 4: Disconnect the starter wiring

  • Use a 12mm socket to remove the nut holding the main power cable to the starter.
  • Remove the cable and set it aside so it cannot touch metal.
  • Unplug the small solenoid connector by pressing the lock tab and pulling straight off (use needle-nose pliers gently if needed).
  • Apply a thin dab of dielectric grease to the small connector seal during reassembly (helps prevent corrosion).

Step 5: Remove the starter mounting bolts

  • Use a 14mm socket, 3/8" ratchet, and a 6" extension to remove the starter mounting bolts (typically 2 bolts).
  • Support the starter with your free hand as the last bolt comes out.
  • If a bolt drops, retrieve it with a magnetic pickup tool.

Step 6: Install the new starter

  • Compare the old and new starter (same mounting ears, same electrical posts).
  • Position the new starter, then hand-thread the mounting bolts to avoid cross-threading.
  • Use a 14mm socket to snug the bolts, then use a 3/8" torque wrench: Torque to 39 Nm (29 ft-lbs).
  • Apply a tiny amount of anti-seize compound to the bolt threads if desired (keep it off electrical contacts).

Step 7: Reconnect the starter wiring

  • Install the main power cable onto the starter stud and start the nut by hand.
  • Use a 12mm socket to tighten the nut securely (do not over-tighten the stud).
  • Plug the small solenoid connector back in until it clicks.
  • Use a flashlight to confirm cables are routed away from hot/rotating parts.

Step 8: Reinstall the intercooler

  • Set the intercooler back into place, aligning the couplers.
  • Use a 12mm socket to reinstall the intercooler mounting bolts/brackets.
  • Use a flathead screwdriver to tighten the hose clamps.
  • Double-check every clamp is tight; a loose clamp can cause a boost leak and poor performance.

Step 9: Reconnect the battery

  • Install the negative terminal back onto the battery post.
  • Use a 10mm socket to tighten the clamp until it won’t rotate by hand.

✅ After Repair

  • Turn the ignition ON and verify no warning lights related to disconnected sensors/hoses (some lights may clear after a few drive cycles if no issue remains).
  • Start the engine: it should crank strongly with no clicking or slow cranking.
  • Listen for air hissing near the intercooler couplers (indicates a loose clamp).
  • Take a short test drive and confirm normal power (no boost leak symptoms like sluggish acceleration).

💰 DIY vs Shop Cost

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

DIY Cost: ₹10,000-₹22,000 (parts only)

You Save: ₹8,000-₹13,000 by doing it yourself!

Shop labor rates in Panipat vary, but often run ₹800-₹1,500/hour. This repair takes a shop approximately 1.5-3.0 hours.


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Guide for Starter Motor replace for these Subaru vehicles

Year Make ModelSub ModelEngineBody Style
2018 Subaru Forester---
2017 Subaru Forester---
2016 Subaru Forester---
2015 Subaru Forester---
2014 Subaru Forester---
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