🔧 Tucson - Serpentine Belt Replacement

The serpentine belt drives your A/C compressor, alternator, and other accessories. On your Tucson’s 2.0L engine, you relieve the automatic belt tensioner, slide the old belt off, then route and install the new belt correctly.

Difficulty Level: Intermediate | Estimated Time: 0.8-1.5 hours

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⚠️ Safety & Precautions

• ⚠️ Let the engine cool fully before working near pulleys.
• ⚠️ Keep fingers/hair/clothing away from belt and pulleys.
• ⚠️ Support your Tucson with jack stands before going underneath.
• ⚠️ Do not start the engine until all tools are removed.
• ⚠️ Battery disconnect is not required, but keep the key away from the vehicle to prevent accidental starts.

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🔧 Required Tools

You'll need the following tools for this repair:

• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Safety glasses
• Mechanic gloves
• 21mm socket
• 1/2" drive breaker bar
• 1/2" drive torque wrench (30-150 ft-lbs range)
• 3/8" drive ratchet
• 3/8" drive extension set
• 10mm socket
• Phillips screwdriver
• Trim clip removal tool
• 17mm socket
• 17mm combination wrench
• Flashlight
• Paint marker

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Serpentine belt (accessory drive belt) - Qty: 1
• Fender liner clips (push-type retainers) - Qty: 5-10

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📋 Before You Begin

• Park on level ground, shift to Park, and set the parking brake.
• Place wheel chocks behind the rear wheels.
• Open the hood and find the belt routing diagram sticker (usually on the radiator support/under-hood area). If it’s missing, take a clear photo of the current belt routing with your phone.
• Use a paint marker to mark belt direction if you’re re-checking routing.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Loosen the right-front wheel

• Use a 21mm socket and 1/2" breaker bar to crack loose the lug nuts about 1/2 turn while the tire is still on the ground.

Step 2: Raise and support your Tucson

• Use a floor jack to lift the right-front corner at the correct jacking point.
• Place jack stands under a solid support point and lower the vehicle onto the stands.
• Give the vehicle a gentle shake to confirm it’s stable.

Step 3: Remove the right-front wheel

• Remove the lug nuts using the 21mm socket and take off the wheel.

Step 4: Remove the right-front inner fender liner section

• Use a trim clip removal tool to pop out the plastic push-clips.
• Use a Phillips screwdriver and 10mm socket with a 3/8" ratchet to remove any screws/bolts holding the liner section.
• Pull the liner back enough to see the belt and pulleys. Don’t force it; clips break easily.

Step 5: Confirm belt routing before removal

• Use a flashlight to identify each pulley the belt rides on.
• Compare what you see to the under-hood routing diagram (or your photo).
• Make sure you note which pulleys are “ribbed” (grooved) vs “smooth” because the belt ribs must sit in the grooved pulleys.

Step 6: Relieve tension from the automatic tensioner

• Install a 17mm socket on the belt tensioner bolt head (the tensioner is spring-loaded).
• Use a 1/2" breaker bar to rotate the tensioner to relieve belt tension.
• While holding the tensioner released, slide the belt off one easy-to-reach pulley (often a smooth idler pulley).
• Slowly let the tensioner return to its resting position. Control it—don’t let it snap back.

Step 7: Remove the old belt

• Work the belt off the remaining pulleys by hand.
• Use the flashlight to inspect pulleys for wobble, damage, or heavy noise when spun by hand.

Step 8: Install the new belt (route first, tension last)

• Route the new belt around the pulleys following the under-hood diagram (or your photo).
• Keep the belt fully seated in the grooves of every ribbed pulley before applying tension.
• Leave the easiest pulley for last (typically a smooth pulley) so you can slip the belt on after releasing the tensioner.

Step 9: Apply tension and verify belt seating

• Use the 17mm socket and 1/2" breaker bar to rotate the tensioner again.
• Slip the belt onto the last pulley, then slowly release the tensioner.
• Use a flashlight to check every pulley: the belt ribs must be centered and seated (not hanging off an edge).

Step 10: Reinstall fender liner and wheel

• Reposition the liner and reinstall hardware using the 10mm socket, Phillips screwdriver, and trim clip removal tool.
• Reinstall the wheel and hand-start all lug nuts.
• Lower the vehicle off the jack stands using the floor jack.
• Tighten lug nuts in a star pattern using the 1/2" drive torque wrench: Torque to 90-110 Nm (66-81 ft-lbs).

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✅ After Repair

• Start the engine and watch the belt for 30-60 seconds (keep hands/tools away).
• Listen for squeal, slapping, or chirping. If you hear noise, shut off and re-check belt routing and seating.
• After a short 5-10 minute drive, re-check belt alignment through the wheel well opening with a flashlight.

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💰 DIY vs Shop Cost

Shop Cost: $150-$300 (parts + labor)

DIY Cost: $25-$70 (parts only)

You Save: $125-$230 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.8-1.5 hours.

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🎯 Ready to get started?

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