🔧 Tucson - Starter Motor Replacement

Replacing the starter motor on your Tucson means removing the old electric motor that cranks the engine and installing a new one. A bad starter commonly causes a single click, no-crank condition, slow cranking, or intermittent starting.

Difficulty Level: Intermediate | Estimated Time: 2-3 hours

---

⚠️ Safety & Precautions

• ⚠️ Disconnect the negative battery cable before touching the starter wiring. The starter has a large live power cable connected directly to the battery.
• ⚠️ Let the engine and exhaust cool fully before starting. The starter is mounted low on the engine near hot components.
• ⚠️ Support your Tucson securely on jack stands if raising the front. Never work under a vehicle supported only by a jack.
• ⚠️ The AWD model has tighter access underneath, so work slowly and do not force wiring or brackets.
• ⚠️ Keep the ignition key away from the vehicle while working.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 12mm socket
• 14mm socket
• 17mm socket
• 3/8-inch ratchet
• 3/8-inch 6-inch extension
• 3/8-inch universal joint
• Torque wrench 10-100 Nm
• Flat-blade screwdriver
• Trim clip removal tool
• Needle-nose pliers
• Floor jack 2-ton minimum
• Jack stands 2-ton minimum
• Wheel chocks
• Battery terminal brush
• Work light
• Safety glasses
• Mechanic gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Starter motor - Qty: 1
• Starter mounting bolts - Qty: 2 if damaged or corroded
• Battery terminal protector spray - Qty: 1
• Dielectric grease - Qty: 1

---

📋 Before You Begin

• Park your Tucson on a flat surface, shift to Park, and set the parking brake.
• Place wheel chocks behind the rear wheels to keep the vehicle from rolling.
• Open the hood and let the engine cool completely.
• Use a 10mm socket to disconnect the negative battery cable. Move the cable aside so it cannot spring back to the battery post.
• If raising the vehicle, use a floor jack 2-ton minimum at the front jacking point and support it with jack stands 2-ton minimum.
• A universal joint is a small swivel adapter that lets your socket reach bolts at an angle.
• Dielectric grease is a non-conductive protective grease used around electrical connector seals to help keep moisture out.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect Battery Power

• Put on safety glasses and mechanic gloves.
• Use a 10mm socket and 3/8-inch ratchet to loosen the negative battery terminal clamp.
• Lift the negative cable off the battery post and tuck it safely away from the terminal.
• Use a battery terminal brush to clean the battery post if it has corrosion.
• Always remove negative first.

Step 2: Raise and Support the Front

• Place wheel chocks behind both rear wheels.
• Use a floor jack 2-ton minimum to raise the front of your Tucson high enough to work underneath.
• Set the vehicle onto jack stands 2-ton minimum at the approved front support points.
• Gently shake the vehicle by hand to confirm it is stable before crawling underneath.

Step 3: Remove the Lower Engine Splash Shield

• Use a trim clip removal tool to remove plastic push clips from the lower splash shield.
• Use a 10mm socket and 3/8-inch ratchet to remove the splash shield bolts.
• Lower the splash shield and set it aside.
• Keep clips grouped together.

Step 4: Locate the Starter Motor

• Use a work light to look at the lower engine/transmission area.
• The starter is a small cylindrical motor bolted to the transmission bellhousing, where the engine and transmission meet.
• Identify the large battery cable and the smaller signal wire attached to the starter solenoid.
• The solenoid is the smaller cylinder mounted on the starter that pushes the starter gear into the engine flywheel.

Step 5: Remove the Starter Wiring

• Use a flat-blade screwdriver or needle-nose pliers to carefully release the small starter signal wire connector.
• Use a 12mm socket, 3/8-inch ratchet, and 3/8-inch 6-inch extension to remove the nut from the large starter battery cable terminal.
• Pull the large cable straight off the starter terminal and move it aside.
• Do not let the cable terminal touch metal, even though the battery is disconnected.
• Torque during installation: starter battery cable nut to 9-12 Nm (80-106 in-lbs)

Step 6: Remove the Starter Mounting Bolts

• Support the starter with one hand before removing the last bolt. It is heavier than it looks.
• Use a 14mm socket, 3/8-inch ratchet, 3/8-inch 6-inch extension, and 3/8-inch universal joint to loosen the starter mounting bolts.
• Remove both starter mounting bolts completely.
• If access is tight, use a 17mm socket only if your replacement or existing hardware uses a larger bolt head.
• Slide the starter straight out of the transmission bellhousing.
• Do not pry against wiring.

Step 7: Compare Old and New Starters

• Place the old and new starter motors side by side on the ground.
• Check that the mounting ears, electrical terminals, and starter gear position match.
• Use a battery terminal brush to lightly clean the large cable terminal if it is dirty or corroded.
• Apply a small amount of dielectric grease around the connector seal area only. Do not pack grease onto the metal contact surface.

Step 8: Install the New Starter

• Lift the new starter into position by hand and align it with the transmission bellhousing.
• Start both mounting bolts by hand to avoid cross-threading.
• Use a 14mm socket, 3/8-inch ratchet, 3/8-inch 6-inch extension, and 3/8-inch universal joint to snug the mounting bolts.
• Use a torque wrench 10-100 Nm and 14mm socket to tighten the starter mounting bolts.
• Torque to 39-54 Nm (29-40 ft-lbs)

Step 9: Reconnect Starter Wiring

• Install the large battery cable onto the starter terminal by hand.
• Use a 12mm socket and torque wrench 10-100 Nm to tighten the cable nut.
• Torque to 9-12 Nm (80-106 in-lbs)
• Push the small signal wire connector onto the starter until it clicks.
• Use a work light to confirm the wiring is routed away from sharp edges and hot exhaust parts.

Step 10: Reinstall the Lower Splash Shield

• Lift the splash shield into position by hand.
• Use a 10mm socket and 3/8-inch ratchet to reinstall the splash shield bolts.
• Torque to 7-10 Nm (62-89 in-lbs)
• Use a trim clip removal tool by hand to reinstall the plastic push clips.

Step 11: Lower the Vehicle

• Use a floor jack 2-ton minimum to lift the front slightly off the jack stands.
• Remove the jack stands 2-ton minimum.
• Lower your Tucson slowly to the ground with the floor jack 2-ton minimum.
• Remove the wheel chocks after the vehicle is fully on the ground.

Step 12: Reconnect the Battery

• Use a battery terminal brush to clean the negative battery post and cable clamp if needed.
• Place the negative cable back onto the battery post.
• Use a 10mm socket and 3/8-inch ratchet to tighten the terminal clamp.
• Torque to 4-6 Nm (35-53 in-lbs)
• Apply battery terminal protector spray lightly after tightening.

---

✅ After Repair

• Start your Tucson and listen for smooth cranking with no grinding noise.
• Turn the engine off and restart it 2-3 times to confirm the starter works consistently.
• Check that the battery warning light turns off after startup.
• Reset the clock and radio presets if they changed after the battery disconnect.
• If the starter still clicks or cranks slowly, test the battery and battery cables before replacing more parts.

---

💰 DIY vs Shop Cost

Shop Cost: $450-$750 (parts + labor)

DIY Cost: $160-$350 (parts only)

You Save: $290-$400 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-2.5 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.