🔧 Frontier - Battery Replacement

Replacing the battery on your Frontier is a beginner-friendly job. The battery sits in the engine bay, and the main goal is to remove the old battery safely, install the correct replacement, and make sure the terminals are clean and tight.

Difficulty Level: Beginner | Estimated Time: 20-40 minutes

---

⚠️ Safety & Precautions

• ⚠️ Batteries can produce explosive gas, so keep sparks, flames, and cigarettes away.
• ⚠️ Always remove the negative battery cable first and reinstall it last. This helps prevent accidental short circuits.
• ⚠️ Wear safety glasses and gloves. Battery acid can burn skin and eyes.
• ⚠️ Do not let metal tools touch both battery terminals at the same time.
• ⚠️ The battery is heavy. Lift with both hands and keep it upright.
• ⚠️ Battery disconnect is required for this repair.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 10mm wrench
• 10mm socket
• Ratchet
• 6-inch extension
• Battery terminal cleaning brush
• Torque wrench inch-pound
• Battery carrier strap
• Nitrile gloves
• Safety glasses

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 12V lead-acid battery, Group 24F - Qty: 1
• Battery terminal protectant - Qty: 1
• Battery terminal anti-corrosion washers - Qty: 2

---

📋 Before You Begin

• Park your Frontier on level ground.
• Shift into Park for automatic transmission or Neutral for manual transmission.
• Set the parking brake.
• Turn the ignition off and remove the key.
• Turn off headlights, dome lights, radio, and accessories.
• Open the hood and locate the battery on the passenger side of the engine bay.
• Wait at least 2 minutes before disconnecting the battery so modules can power down.
• A battery terminal is the metal clamp attached to each battery post.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the Hood and Inspect the Battery Area

• Use your hands to release the hood latch and secure the hood with the prop rod.
• Look at the battery, cables, and hold-down bracket before removing anything.
• If you see heavy white or green crust, that is corrosion. Avoid touching it with bare hands.
• Take a photo before removing cables.

Step 2: Disconnect the Negative Battery Cable

• Find the negative terminal. It is marked with a - symbol and usually has a black cable.
• Use a 10mm wrench to loosen the negative terminal clamp nut.
• Twist the clamp gently and lift it off the battery post.
• Move the negative cable away from the battery so it cannot spring back and touch the post.

Step 3: Disconnect the Positive Battery Cable

• Find the positive terminal. It is marked with a + symbol and usually has a red cover or red cable.
• Lift the red protective cover by hand if equipped.
• Use a 10mm wrench to loosen the positive terminal clamp nut.
• Twist the clamp gently and lift it off the battery post.
• Move the positive cable aside so it does not touch metal parts.

Step 4: Remove the Battery Hold-Down Bracket

• The hold-down bracket keeps the battery from moving while driving.
• Use a 10mm socket, ratchet, and 6-inch extension to loosen the hold-down fasteners.
• Remove the bracket and set it aside.
• Keep the fasteners in a safe spot so they do not fall into the engine bay.

Step 5: Remove the Old Battery

• Use a battery carrier strap if the battery does not have a built-in handle.
• Lift the battery straight up and out of the tray.
• Keep the battery upright at all times.
• Set it on the ground carefully, away from children, pets, and sparks.

Step 6: Clean the Battery Terminals and Tray

• Use a battery terminal cleaning brush to clean the inside of both cable clamps.
• Use the same battery terminal cleaning brush to clean the new battery posts if needed.
• If the tray has dirt or corrosion, wipe it clean while wearing nitrile gloves and safety glasses.
• Do not pour water onto electrical parts.

Step 7: Install the New Battery

• Use a battery carrier strap to lower the new battery into the tray.
• Make sure the positive post is on the same side as the positive cable.
• The battery must sit flat in the tray.
• Install the anti-corrosion washers over the battery posts by hand if using them.

Step 8: Reinstall the Battery Hold-Down Bracket

• Set the hold-down bracket back over the battery.
• Use a 10mm socket, ratchet, and 6-inch extension to snug the fasteners evenly.
• Use a torque wrench inch-pound to tighten the hold-down fasteners to Torque to 8 Nm (71 in-lbs).
• Do not overtighten. The battery case can crack.

Step 9: Connect the Positive Battery Cable

• Install the positive cable onto the positive battery post first.
• Push the clamp fully down onto the post by hand.
• Use a 10mm wrench to tighten the terminal clamp nut.
• Use a torque wrench inch-pound to tighten the terminal nut to Torque to 5.4 Nm (48 in-lbs).
• Close the red protective cover by hand if equipped.

Step 10: Connect the Negative Battery Cable

• Install the negative cable onto the negative battery post last.
• Push the clamp fully down onto the post by hand.
• Use a 10mm wrench to tighten the terminal clamp nut.
• Use a torque wrench inch-pound to tighten the terminal nut to Torque to 5.4 Nm (48 in-lbs).
• Apply battery terminal protectant lightly to the terminals after both cables are tight.

Step 11: Check Your Work

• Use your hand to gently wiggle each battery cable.
• The clamps should not rotate or lift off the posts.
• Make sure no tools are left near the battery or engine.
• Close the hood securely by hand.

---

✅ After Repair

• Start your Frontier and make sure it cranks normally.
• Let it idle for a few minutes so the engine computer can relearn idle behavior.
• Reset the clock and radio presets if needed.
• Check that the power windows, interior lights, and key fob functions work normally.
• If the idle feels slightly different at first, drive normally for a short trip. It often smooths out after relearning.
• Recycle the old battery at a parts store or battery recycling center. Do not throw it in the trash.

---

💰 DIY vs Shop Cost

Shop Cost: $220-$380 (parts + labor)

DIY Cost: $140-$260 (parts only)

You Save: $80-$120 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.3-0.6 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.