🔧 Tucson - Serpentine Belt Replacement

Replacing the serpentine belt on your Tucson involves removing belt tension, slipping the old belt off the pulleys, and installing the new belt in the correct routing path. The serpentine belt drives key accessories like the alternator, A/C compressor, and power steering system, so replace it if it is cracked, glazed, noisy, or worn.

Difficulty Level: Beginner | Estimated Time: 30-60 minutes

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⚠️ Safety & Precautions

• ⚠️ Work only with the engine fully off and cool. The belt area has moving parts that can cause serious injury.
• ⚠️ Keep fingers, hair, sleeves, and tools away from pulleys at all times.
• ⚠️ Do not start the engine until the belt is fully seated in every pulley groove.
• ⚠️ Battery disconnect is not normally required for this repair, but keep the ignition key away from the vehicle while working.
• ⚠️ If lifting the front of your Tucson for access, always support it with jack stands. Never rely on a floor jack alone.

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🔧 Required Tools

You'll need the following tools for this repair:

• Serpentine belt tool with 17mm socket (specialty)
• 17mm box-end wrench
• 10mm socket
• 3/8-inch drive ratchet
• Flathead screwdriver
• Flashlight
• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• Mechanic gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine drive belt - Qty: 1

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📋 Before You Begin

• Park your Tucson on level ground and shift the transmission into Park.
• Apply the parking brake firmly.
• Place wheel chocks behind the rear wheels.
• Open the hood and let the engine cool completely.
• Use a flashlight to look at the belt routing before removal.
• If the factory belt routing sticker is missing, take a clear photo with your phone before removing the belt.
• A serpentine belt tool is a long, thin wrench made to reach the belt tensioner in tight engine bays.
• The belt tensioner is a spring-loaded pulley arm that keeps the belt tight automatically.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Inspect the belt routing

• Use a flashlight to locate the serpentine belt on the front passenger side of the engine.
• Look for the belt routing label under the hood or near the radiator support.
• If there is no label, take a photo showing how the belt wraps around each pulley.
• Photo first. It prevents confusion later.

Step 2: Create more working room if needed

• If top access feels too tight, place wheel chocks behind the rear wheels.
• Use a floor jack rated 2-ton minimum at the front jacking point to raise the front passenger side slightly.
• Set the vehicle securely on jack stands rated 2-ton minimum.
• Use a flathead screwdriver to remove any lower splash shield clips if the belt is easier to reach from below.
• Use a 10mm socket and 3/8-inch drive ratchet to remove any lower shield bolts if equipped.

Step 3: Locate the automatic belt tensioner

• Use a flashlight to find the smooth tensioner pulley and its center bolt area.
• The tensioner pulley presses against the smooth back side of the belt.
• Confirm your 17mm socket or 17mm box-end wrench fits the tensioner hex.

Step 4: Release belt tension

• Install the serpentine belt tool with 17mm socket onto the tensioner.
• Rotate the tensioner slowly to relieve belt tension.
• Hold the tensioner steady while sliding the belt off the easiest smooth pulley.
• Slowly let the tensioner return to its resting position.
• Do not let the tensioner snap back. That can damage the tensioner.

Step 5: Remove the old belt

• Use your hands with mechanic gloves to pull the belt out from around the remaining pulleys.
• Compare the old belt to the new serpentine drive belt.
• The new belt should be the same rib count and very close in length.
• Inspect each pulley with a flashlight for cracks, wobble, heavy rust, or stuck grooves.

Step 6: Route the new belt

• Use your belt photo or routing label to install the new serpentine drive belt around the pulleys.
• Make sure the ribbed side of the belt sits in ribbed pulleys.
• Make sure the smooth back side of the belt rides on smooth pulleys.
• Leave the easiest upper smooth pulley for last.
• Ribs must sit perfectly in grooves.

Step 7: Reapply tension and seat the belt

• Use the serpentine belt tool with 17mm socket to rotate the tensioner again.
• Slide the belt over the final pulley.
• Slowly release the tensioner until it tightens the belt.
• Use a flashlight to check every pulley. The belt must be centered and fully seated.

Step 8: Reinstall removed shields

• If a lower splash shield was removed, reinstall it with the original clips using a flathead screwdriver.
• Reinstall any shield bolts using a 10mm socket and 3/8-inch drive ratchet.
• Torque small splash shield bolts to 7-10 Nm (62-89 in-lbs).

Step 9: Lower the vehicle if raised

• Use the floor jack rated 2-ton minimum to raise the vehicle slightly off the jack stands.
• Remove the jack stands rated 2-ton minimum.
• Lower the vehicle slowly with the floor jack rated 2-ton minimum.
• Remove the wheel chocks.

Step 10: Start and check operation

• Put on safety glasses.
• Start the engine and watch the belt from a safe distance.
• The belt should run smoothly with no wobble, squeal, or walking off the pulley edge.
• Turn the engine off and recheck belt seating with a flashlight.

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✅ After Repair

• ✅ Listen for squealing on startup and with the A/C turned on.
• ✅ If the belt squeals, shut the engine off and recheck routing and pulley alignment.
• ✅ Recheck the belt after your first short drive.
• ✅ If the belt keeps slipping, the tensioner or an accessory pulley may also need replacement.
• ✅ No scan tool reset or infotainment procedure is required for this repair.

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💰 DIY vs Shop Cost

Shop Cost: $140-$260 (parts + labor)

DIY Cost: $25-$55 (parts only)

You Save: $115-$205 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 hours.

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🎯 Ready to get started?

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