🔧 Fusion - Starter Motor Replacement

Your Fusion Energi does not use a conventional 12-volt starter motor. The gasoline engine is started by the hybrid transaxle motor-generator through the high-voltage hybrid system, so there is no normal bolt-on starter motor to replace.

If your Fusion will not “start,” the repair is usually related to the 12V battery, high-voltage battery state, contactors, fuses, wiring, PCM/SOBDMC controls, or the transmission-mounted motor-generator system.

Difficulty Level: Advanced | Estimated Time: Diagnosis varies

---

⚠️ Safety & Precautions

• ⚠️ Your Fusion Energi is a plug-in hybrid with a high-voltage system. Orange cables and hybrid battery components can cause serious injury or death.
• ⚠️ Do not remove orange high-voltage cables, hybrid battery covers, inverter covers, or transaxle electrical connectors without Ford hybrid service procedures and PPE.
• ⚠️ A “starter motor replacement” procedure is not applicable because this vehicle does not have a serviceable conventional starter motor.
• ⚠️ Disconnecting the 12V battery can wake or reset modules. Use care around hybrid vehicles because the engine can start automatically when READY mode is active.
• ⚠️ Keep the key fob away from the vehicle while working under the hood.

---

🔧 Required Tools

You'll need the following tools for basic no-start checks before any advanced hybrid diagnosis:

• Digital multimeter
• 10mm socket
• 3/8-inch drive ratchet
• Battery terminal cleaning brush
• 12V battery charger with AGM mode
• OBD-II scan tool with Ford hybrid module access (specialty)
• Insulated gloves rated for automotive electrical work
• Safety glasses
• Nitrile gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Starter motor - Qty: 0, not equipped on Fusion Energi
• 12V AGM battery - Qty: 1, only if testing confirms failure
• 12V battery terminal protectant - Qty: 1
• Battery terminal felt washers - Qty: 2

---

📋 Before You Begin

• Park your Fusion on level ground and shift to Park.
• Set the parking brake.
• Turn the vehicle OFF completely and remove the key fob from the cabin area.
• Do not press the brake pedal or power button while hands or tools are near moving parts.
• Do not plug in the charge cord while performing 12V battery checks.
• A scan tool is a device that reads vehicle fault codes. For this Fusion, it should access Ford hybrid modules, not just generic engine codes.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Confirm This Is Not a Starter Motor Job

• Use no tools for this step.
• Your Fusion Energi starts the engine using the hybrid transaxle motor-generator, not a separate starter motor.
• Do not search for a starter near the engine block. It is not installed on this vehicle.
• Save time: diagnose power first.

Step 2: Check the 12V Battery Voltage

• Use a digital multimeter. A multimeter measures voltage so you can tell if the small 12V battery can wake the car’s computers.
• Access the 12V battery in the trunk area.
• Set the multimeter to DC volts.
• Touch the red probe to the positive battery terminal and the black probe to the negative terminal.
• A healthy resting 12V battery should usually read about 12.4-12.7 volts.
• If it reads near 12.0 volts or lower, charge and retest the battery before replacing anything else.

Step 3: Charge the 12V Battery if Low

• Use a 12V battery charger with AGM mode. AGM mode is for absorbed glass mat batteries, which charge differently than basic flooded batteries.
• Connect the charger clamps to the 12V battery terminals: red to positive, black to negative.
• Charge the battery fully using the charger’s AGM setting.
• After charging, let the battery sit for 10-15 minutes, then recheck voltage with the digital multimeter.
• If the battery will not hold charge, replace the 12V battery.

Step 4: Inspect and Clean the 12V Battery Terminals

• Use a 10mm socket and 3/8-inch drive ratchet to loosen the negative battery terminal first.
• Use the same 10mm socket to loosen the positive terminal if cleaning is needed.
• Use a battery terminal cleaning brush to clean corrosion from the posts and cable ends.
• Reinstall the positive terminal first, then the negative terminal.
• Tighten the terminal nuts snugly with the 10mm socket. Do not overtighten small battery terminal hardware.
• Apply 12V battery terminal protectant and install battery terminal felt washers if replacing or servicing the battery.

Step 5: Try READY Mode Correctly

• Use no tools for this step.
• Sit in the driver seat with the key fob inside the vehicle.
• Press and hold the brake pedal.
• Press the power button once.
• Look for the READY indicator on the instrument cluster.
• On your Fusion, the gas engine may not start immediately even when the vehicle is working normally.
• READY means the car is on.

Step 6: Scan the Hybrid and Powertrain Modules

• Use an OBD-II scan tool with Ford hybrid module access (specialty).
• Plug the scan tool into the OBD-II port under the driver side dash.
• Scan all modules, especially PCM, BECM, SOBDMC, ABS, BCM, and TCM-related hybrid control modules.
• Record all diagnostic trouble codes before clearing anything.
• If codes mention high-voltage battery isolation, contactors, motor electronics, inverter, or transaxle motor-generator faults, stop DIY work and use a hybrid-qualified repair facility.

Step 7: Do Not Remove Hybrid Transaxle Components

• Use no tools for this step.
• The engine-starting function is built into the hybrid drive system, not a starter motor.
• Removing transaxle or inverter components requires Ford hybrid service steps, high-voltage shutdown, and insulated safety equipment.
• This is not a beginner DIY repair.

---

✅ After Repair

• Confirm your Fusion enters READY mode normally.
• Check that the instrument cluster shows no red battery, wrench, or stop-safely warning.
• If the 12V battery was replaced, drive the vehicle normally and allow modules to relearn idle and accessory settings.
• Scan again with an OBD-II scan tool with Ford hybrid module access (specialty) and confirm no current no-start related codes return.
• If high-voltage or hybrid transaxle codes return, do not continue DIY repair.

---

💰 DIY vs Shop Cost

Shop Cost: $150-$350 for basic no-start diagnosis, more if hybrid system repair is needed

DIY Cost: $0-$250 for basic testing, charging, and possible 12V battery replacement

You Save: $100-$250 by doing the basic checks yourself!

Shop labor rates vary but typically run $100-$150/hour. Basic diagnosis takes a shop approximately 1-2 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.