🔧 Tucson - Serpentine Belt Replacement

Replacing the serpentine belt on your Tucson means removing the old accessory drive belt and installing a new one around the engine pulleys. This belt drives important parts like the alternator, A/C compressor, and water pump, so replace it if it is cracked, glazed, squealing, or worn.

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

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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.
• ⚠️ Disconnecting the battery is recommended because your hands will be near moving engine accessories.
• ⚠️ Never start the engine until the belt is fully seated in every pulley groove.
• ⚠️ If raising the front of the vehicle, 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:

• 10mm socket
• Ratchet handle 3/8-inch drive
• 14mm wrench
• 14mm socket
• Serpentine belt tool 14mm adapter (specialty)
• Flat blade screwdriver
• Trim clip removal tool
• Floor jack rated 2-ton minimum
• Jack stands rated 2-ton minimum
• Wheel chocks
• Flashlight
• Mechanic gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine belt - Qty: 1
• Engine splash shield clips - Qty: As needed

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📋 Before You Begin

• Park your Tucson on level ground, shift to Park, and set the parking brake.
• Place wheel chocks behind the rear wheels so the vehicle cannot roll.
• Open the hood and let the engine cool completely.
• Use a 10mm socket and ratchet handle 3/8-inch drive to disconnect the negative battery cable. Move the cable aside so it cannot touch the terminal.
• A serpentine belt tool is a long, thin handle that gives extra leverage to move the spring-loaded belt tensioner.
• The belt tensioner is the spring-loaded pulley arm that keeps the belt tight automatically.
• Take a clear photo of the belt routing before removal. This helps you match the belt path during installation.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Raise the Front Passenger Side

• Use a floor jack rated 2-ton minimum at the correct front jacking point to lift the front passenger side slightly.
• Place a jack stand rated 2-ton minimum under the approved support point.
• Gently lower the vehicle onto the jack stand using the floor jack rated 2-ton minimum.
• Shake lightly to confirm stability.

Step 2: Remove the Lower Splash Shield Access

• Put on safety glasses and mechanic gloves.
• Use a trim clip removal tool to remove the plastic clips from the passenger-side lower engine splash shield area.
• Use a 10mm socket and ratchet handle 3/8-inch drive to remove any small splash shield bolts if equipped.
• Use a flat blade screwdriver only if needed to gently pry stubborn clips loose.
• Move the splash shield aside enough to see the crankshaft pulley and belt path.

Step 3: Locate the Belt Tensioner

• Use a flashlight to look at the passenger side of the engine where the serpentine belt runs.
• Find the belt tensioner pulley. It is the smooth pulley mounted on a spring-loaded arm.
• Look for the 14mm hex area or bolt head used to rotate the tensioner arm.
• Do not loosen the tensioner mounting bolt. You are only rotating the tensioner to release belt pressure.

Step 4: Release Belt Tension

• Install the serpentine belt tool 14mm adapter (specialty) or use a 14mm wrench on the tensioner hex.
• Slowly rotate the tensioner to relieve belt tension.
• While holding the tensioner, slide the belt off the easiest smooth pulley using your free hand.
• Slowly release the tensioner back to its resting position. Do not let it snap back.
• Move slowly; spring tension is strong.

Step 5: Remove the Old Belt

• Use your hands to pull the old belt out from around the alternator, A/C compressor, crankshaft pulley, and other pulleys.
• Use a flashlight to check that no belt ribs or pieces are stuck in pulley grooves.
• Inspect each pulley by hand. They should spin smoothly without grinding or wobbling.
• If a pulley feels rough or loose, do not install the new belt until that pulley issue is repaired.

Step 6: Compare the New and Old Belts

• Lay the new serpentine belt beside the old belt on the ground.
• Check that the rib count, width, and overall length match closely.
• The old belt may be slightly longer from wear, but it should not be dramatically different.

Step 7: Route the New Belt

• Use your belt routing photo and flashlight to route the new serpentine belt around the pulleys.
• Make sure the ribbed side of the belt sits in grooved pulleys.
• Make sure the smooth side of the belt runs against smooth pulleys.
• Leave the easiest upper smooth pulley for last so the belt can slide on while the tensioner is released.
• Ribs must sit fully in grooves.

Step 8: Reapply Tension and Seat the Belt

• Use the serpentine belt tool 14mm adapter (specialty) or 14mm wrench to rotate the tensioner again.
• Slide the belt over the final pulley by hand.
• Slowly release the tensioner until it tightens the belt.
• Use a flashlight to inspect every pulley. The belt must be centered and fully seated.
• No torque spec is required for the tensioner because no tensioner bolt is removed during this belt-only replacement.

Step 9: Reinstall the Splash Shield

• Reposition the lower splash shield by hand.
• Use a trim clip removal tool or your fingers to reinstall the plastic clips.
• Use a 10mm socket and ratchet handle 3/8-inch drive to reinstall any splash shield bolts.
• Tighten splash shield bolts snug only. Torque to 7-10 Nm (62-89 in-lbs).

Step 10: Lower the Vehicle

• Use a 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 the vehicle to the ground using the floor jack rated 2-ton minimum.

Step 11: Reconnect the Battery

• Place the negative battery cable back onto the battery terminal.
• Use a 10mm socket and ratchet handle 3/8-inch drive to tighten the terminal nut.
• Tighten the terminal snugly. Torque to 4-6 Nm (35-53 in-lbs).

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✅ After Repair

• Start your Tucson and let it idle while watching the belt from a safe distance.
• Confirm the belt runs smoothly with no wobble, squeal, slapping, or walking off a pulley.
• Turn the A/C on and listen again. A squeal may mean the belt is not seated correctly or a pulley is failing.
• Shut the engine off and recheck belt alignment with a flashlight.
• If the battery was disconnected, reset the clock and radio presets if needed.

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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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