🔧 CX-9 - Starter Motor Replacement

The starter motor spins the engine so it can start. When it fails, you may get a single click, slow cranking, or no crank at all. On your CX-9, the starter is mounted to the transmission bellhousing and is accessed from the top and/or underneath.

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

Assumption: Stock intake layout; access may require both top and underside.

---

⚠️ Safety & Precautions

• ⚠️ Disconnect the negative battery cable before touching the starter wiring (the main cable is always “hot” and can short to ground).
• ⚠️ Support the vehicle on jack stands if working underneath; never rely on a floor jack alone.
• ⚠️ Let the engine cool; the turbo and nearby parts can be very hot.
• ⚠️ Keep tools away from the battery positive post and starter B+ terminal.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Mechanic gloves
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Metric socket set (8mm, 10mm, 12mm, 14mm)
• Metric wrench set (10mm, 12mm, 14mm)
• 3/8" ratchet
• 3/8" torque wrench (10-100 Nm range)
• Socket extensions (3", 6", 12")
• Universal joint adapter
• Flat-blade screwdriver
• Trim clip removal tool
• Pliers
• Flashlight
• Magnetic parts tray
• Fender cover

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Starter motor - Qty: 1
• Intake hose clamp(s) - Qty: 1-2
• Electrical contact cleaner - Qty: 1
• Dielectric grease - Qty: 1

---

📋 Before You Begin

• Park on level ground, set the parking brake, and place wheel chocks behind the rear wheels.
• Open the hood and install a fender cover to protect paint.
• Disconnect the battery: use a 10mm wrench to loosen the negative terminal and move it aside so it can’t spring back.
• If you’ll work underneath, raise the front with a floor jack and support it with jack stands at the proper lift points.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the engine cover and open up access

• Remove the engine cover by lifting it straight up (it is held by rubber grommets).
• Use a flat-blade screwdriver and/or pliers to loosen the intake duct/air inlet clamps as needed.
• Remove any upper intake ducting that blocks access to the transmission side of the engine using a 10mm socket.
• Tip: Take a quick photo before disassembly.

Step 2: Remove the air cleaner assembly (if it blocks the starter)

• Unclip/unplug any connectors on the air box area (press the tab, then pull straight off).
• Use a 10mm socket to remove air box bolts and lift the air cleaner assembly out.
• Set clamps/bolts in a magnetic parts tray so nothing gets lost.

Step 3: Locate the starter and identify the wires

• The starter sits where the engine meets the transmission (bellhousing).
• You’ll typically see:
• One thick battery cable on the starter “B+” stud (large nut).
• One small connector/wire for the starter solenoid signal (small plug or small nut).
• Tip: Don’t pull wires—pull on connectors.

Step 4: Remove the lower splash shield (if needed for access)

• If you can’t reach the starter bolts from above, go underneath.
• Use a trim clip removal tool and 10mm socket to remove the under cover/splash shield fasteners.
• Lower the shield and set it aside.

Step 5: Disconnect the starter electrical connections

• Use electrical contact cleaner to remove dirt around the terminals.
• Remove the small solenoid connector:
  • If it’s a plug: press the tab and pull off by hand.
  • If it’s a nut: use a 10mm socket to remove the nut and lift the ring terminal off.
• Remove the main battery cable nut from the B+ stud using a 12mm socket, then lift the cable off.
• Reinstall the nuts back on the studs a few turns so they don’t get lost.
• Torque on reassembly: B+ terminal nut to 9 Nm (80 in-lbs)

Step 6: Unbolt and remove the starter motor

• Support the starter with one hand while removing bolts with the other.
• Use a 14mm socket, extensions, and a universal joint adapter to remove the starter mounting bolts.
• Carefully pull the starter straight out of the bellhousing.
• Torque on reassembly: Starter mounting bolts to 44 Nm (32 ft-lbs)

Step 7: Install the new starter motor

• Compare the new starter to the old one (same nose length, mounting ears, and electrical studs).
• Guide the starter into place and start the mounting bolts by hand (prevents cross-threading).
• Tighten the mounting bolts with a 14mm socket, then finish with a 3/8" torque wrench to 44 Nm (32 ft-lbs).
• Tip: Hand-start every bolt before tightening.

Step 8: Reconnect the starter wiring

• Install the main battery cable onto the B+ stud and tighten with a 12mm socket to 9 Nm (80 in-lbs).
• Reconnect the solenoid connector (plug it in until it clicks, or reinstall the nut with a 10mm socket).
• Apply a thin film of dielectric grease to the outside of connectors (not between metal contact surfaces).

Step 9: Reinstall removed intake parts and shields

• Reinstall the splash shield using a trim clip removal tool and 10mm socket as needed.
• Reinstall the air cleaner assembly and intake ducting using a 10mm socket and tighten clamps with a flat-blade screwdriver.
• Reinstall the engine cover by pressing it straight down onto the grommets.

Step 10: Reconnect the battery

• Reconnect the negative battery terminal using a 10mm wrench.
• Torque: Battery terminal clamp to 5 Nm (44 in-lbs)

---

✅ After Repair

• Turn the key to start and confirm the engine cranks strongly and starts normally.
• Listen for abnormal grinding or whirring; shut off immediately if heard and recheck starter seating.
• Check that all intake clamps are tight (a loose clamp can cause a check engine light and poor running).
• If the battery was disconnected, your radio presets and clock may need to be reset.

---

💰 DIY vs Shop Cost

Shop Cost: $650-$1,100 (parts + labor)

DIY Cost: $220-$500 (parts only)

You Save: $430-$600 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-4 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.