🔧 Tucson - Serpentine Belt Replacement

Replacing the serpentine belt on your Tucson means removing the single accessory drive belt that runs the alternator, A/C compressor, and other belt-driven accessories. The belt should be replaced if it is cracked, glazed, squealing, frayed, or stretched.

Difficulty Level: Beginner | Estimated Time: 0.5-1 hour

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⚠️ Safety & Precautions

• ⚠️ Work only with the engine completely off and cool.
• ⚠️ Keep fingers, clothing, and tools away from pulleys and the belt path.
• ⚠️ Disconnect the negative battery cable to prevent accidental starting while your hands are near the belt.
• ⚠️ Support your Tucson securely if you raise the front. Never rely on a jack alone.
• ⚠️ The belt tensioner is spring-loaded. Move it slowly and keep a firm grip on the tool.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm wrench
• 14mm serpentine belt tool
• 14mm box-end wrench
• 3/8-inch drive ratchet
• Flat-blade screwdriver
• Trim clip removal tool
• Floor jack (rated 2-ton minimum)
• Jack stands (rated 2-ton minimum)
• Wheel chocks
• Work gloves
• Safety glasses
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine belt - Qty: 1

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📋 Before You Begin

• Park your Tucson on level ground.
• Shift to Park and apply the parking brake.
• Place wheel chocks behind the rear wheels.
• Open the hood and let the engine cool fully.
• Take a clear photo of the belt routing before removing the old belt. This helps you install the new belt correctly.
• A serpentine belt tool is a long, thin handle that gives extra reach and leverage to move the belt tensioner.
• The belt tensioner is the spring-loaded pulley arm that keeps the belt tight.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect the Battery

• Use a 10mm wrench to loosen the negative battery terminal clamp.
• Lift the negative cable off the battery post and move it aside so it cannot spring back.
• Black cable means negative.

Step 2: Raise the Front Right Side

• Use a floor jack (rated 2-ton minimum) at the proper front jacking point to raise the passenger-side front of your Tucson.
• Place a jack stand (rated 2-ton minimum) under the proper support point.
• Gently lower the vehicle onto the jack stand.
• Keep the floor jack lightly positioned as a backup, but do not rely on it alone.

Step 3: Remove the Right Lower Splash Shield Access Panel

• Use a trim clip removal tool to remove the plastic push clips from the passenger-side lower splash shield area.
• Use a flat-blade screwdriver if needed to gently lift the center pins of the clips.
• Move the splash shield or access panel aside to see the crankshaft pulley and lower belt path.
• Do not force old clips.

Step 4: Inspect and Photograph the Belt Routing

• Use a flashlight to look at how the belt wraps around each pulley.
• Take a photo from above and another from the passenger-side wheel-well area.
• Make sure you can identify the smooth side and ribbed side of the belt.
• The ribbed side rides in grooved pulleys, and the smooth side rides against smooth pulleys.

Step 5: Release Belt Tension

• Place the 14mm serpentine belt tool or 14mm box-end wrench on the belt tensioner hex boss.
• Rotate the tensioner clockwise to release tension from the belt.
• While holding the tensioner, slide the belt off the easiest upper pulley, usually the alternator pulley.
• Slowly release the tensioner back to its resting position.
• Move slowly and keep control.

Step 6: Remove the Old Belt

• Use your hands with work gloves to pull the old belt off the remaining pulleys.
• Feed the belt out through the top or through the passenger-side lower access opening, whichever gives you more room.
• Compare the old belt to the new serpentine belt. The length and rib count should match.

Step 7: Check the Pulleys Before Installing the New Belt

• Use your hand to spin the accessible idler pulley and tensioner pulley.
• They should spin smoothly without grinding, wobbling, or rough noise.
• Use a flashlight to check that pulley grooves are clean and not packed with debris.
• If a pulley is noisy or loose, replace the failed pulley before installing the new belt.

Step 8: Route the New Belt Around the Lower Pulleys

• Use your belt-routing photo as your guide.
• From the passenger-side lower access area, route the new serpentine belt around the crankshaft pulley first.
• Make sure the ribbed side of the belt sits fully inside the crankshaft pulley grooves.
• Continue routing the belt around the A/C compressor and other lower pulleys.
• Grooves must line up perfectly.

Step 9: Route the Belt Around the Upper Pulleys

• Use your hands and flashlight to guide the belt around the upper pulleys.
• Leave the easiest smooth or upper pulley for last, usually the alternator pulley.
• Check every pulley to confirm the belt is centered and not hanging off an edge.

Step 10: Move the Tensioner and Install the Belt Fully

• Use the 14mm serpentine belt tool or 14mm box-end wrench to rotate the tensioner clockwise again.
• Slip the belt over the final pulley.
• Slowly release the tensioner until it applies pressure to the belt.
• Remove the 14mm serpentine belt tool or 14mm box-end wrench.

Step 11: Verify Belt Alignment

• Use a flashlight to inspect each pulley from above and through the lower access area.
• Make sure every rib is seated in every grooved pulley.
• Make sure the belt is centered on every smooth pulley.
• If the belt is off by even one rib, use the 14mm serpentine belt tool to release tension and reposition it.

Step 12: Reinstall the Splash Shield Access Panel

• Move the splash shield or access panel back into position.
• Use your hands to reinstall the plastic push clips.
• Use a flat-blade screwdriver only if needed to gently seat stubborn clip centers.

Step 13: Lower the Vehicle

• Use the floor jack (rated 2-ton minimum) to lift the vehicle slightly off the jack stand.
• Remove the jack stand (rated 2-ton minimum).
• Slowly lower your Tucson to the ground.

Step 14: Reconnect the Battery

• Place the negative battery cable back on the battery post.
• Use a 10mm wrench to tighten the negative battery terminal clamp snugly.
• Do not overtighten the clamp because the battery post can be damaged.

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✅ After Repair

• Start the engine and let it idle for 30-60 seconds.
• Watch the belt from a safe distance. It should run smoothly with no wobble, squeal, or edge walking.
• Turn the A/C on and listen for abnormal belt noise.
• Shut the engine off and recheck belt alignment with a flashlight.
• If the belt squeals, shut the engine off immediately and recheck routing and pulley alignment.
• Some radio, clock, or auto window settings may need to be reset after the battery disconnect.

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💰 DIY vs Shop Cost

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

DIY Cost: $25-$65 (parts only)

You Save: $115-$195 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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