2024 Hyundai Tucson Key Fob & Smart Key Guide (US): Types, FCC IDs, Costs, and Replacement Options

The 2024 Hyundai Tucson sold in the United States typically uses a proximity “Smart Key” system on many trims, while some configurations may use a more basic remote key setup. Replacement gets confusing because Hyundai key fobs can look similar across models but use different FCC IDs and internal frequencies. Consumers generally find the easiest path is identifying the exact FCC ID from an original working fob (or vehicle documentation) before buying anything. Options typically include OEM, refurbished OEM, or aftermarket shells/electronics—each with different tradeoffs in reliability and compatibility.

2 Key Types
$200-$600 Dealer Range
$30-$200 Aftermarket Range

Compatible Key Fob Types

The following key types are typically compatible with the 2024 Hyundai Tucson. Compatibility varies by trim and options.

Proximity Smart Key (Push-Button Start)

FCC ID: TQ8-FOB-4F21

A proximity Smart Key communicates with the vehicle using a low-power radio signal so the doors can unlock when the key is nearby and the engine can start with a push button. On the 2024 Tucson, this key type is commonly paired with an immobilizer system and requires pairing to the vehicle before it will start the car.

Features

  • Proximity unlock/lock when near the vehicle (trim-dependent settings)
  • Push-button start authorization (immobilizer-based)
  • Panic alarm and tailgate/hatch release (equipment dependent)

Buttons

unlocklockpanicremote start

Battery

CR2032

3-5 years typical typical lifespan

Dealer OEM $250-$550 Programming included
Aftermarket $60-$200 Programming separate

Programming

🏢 Dealer Required

Programming/pairing is typically required for both the remote functions and the immobilizer start authorization. Many 2024 Tucson Smart Keys require secure registration using factory-level tools and proof of ownership; consumers generally find that at least one working key can affect available options.

⚠️ Common Issues

  • Aftermarket fob has the wrong FCC ID or board revision, so it won’t pair
  • Reduced range or intermittent proximity detection from a weak CR2032 or internal damage

Remote Head Key / Flip Key (Turn-Key Ignition on select builds)

FCC ID: TQ8-RKE-4F16

Some vehicles use a traditional key blade with integrated remote buttons for lock/unlock and panic, and the blade turns in the ignition. If equipped with an immobilizer, the transponder chip in the key must match the vehicle to allow starting, separate from the remote button functions.

Features

  • Physical key blade for door/ignition
  • Remote lock/unlock and panic (if equipped)
  • Immobilizer transponder start authorization (if equipped)

Buttons

unlocklockpanic

Battery

CR2032

3-5 years typical typical lifespan

Dealer OEM $180-$450 Programming included
Aftermarket $35-$140 Programming separate

Programming

🔧 Locksmith or Dealer

Cutting the blade and matching any immobilizer transponder typically requires specialized equipment. Options typically include pairing the remote portion and registering the transponder; requirements vary based on ignition type and immobilizer configuration.

⚠️ Common Issues

  • Key is cut incorrectly (turns rough or won’t turn) or the blade style is mismatched
  • Remote works but the car won’t start due to an unregistered/mismatched transponder

Cost Comparison: Your Options

🏢

Dealership

$200-$600
  • âś“ OEM quality guaranteed
  • âś“ Programming included
  • âś“ Warranty coverage
  • âś— Higher cost
  • âś— May require appointment

Best for: Warranty coverage, guaranteed compatibility

🔧

Locksmith

$120-$380
  • âś“ Often same-day service
  • âś“ Mobile options available
  • âś“ Programming included
  • âś“ Often OEM parts
  • â–ł Verify credentials

Best for: Speed, convenience, moderate savings

📦

Aftermarket Online

$30-$200
  • âś“ Lowest cost option
  • âś“ Wide selection
  • âś— Programming not included
  • âś— Compatibility varies
  • â–ł Check return policy

Best for: DIY-capable owners, budget-conscious

Typical price ranges are highest for OEM Smart Keys that require secure immobilizer registration. Consumers generally find aftermarket options can reduce the part cost, but compatibility and return policies matter because incorrect FCC IDs and board revisions are common causes of failure.

đź›’ Buyer's Checklist

Before purchasing a replacement key fob for your 2024 Hyundai Tucson, verify these points:

1 Verify the FCC ID matches your current key (printed on the back or inside the fob)
2 Confirm the vehicle has push-button start vs. a turn-key ignition—this changes the key type and programming requirements
3 Match the button layout and functions (remote start, power liftgate) to your Tucson’s equipment
4 Check that the listing specifies US-market compatibility (frequency/region matters)
5 Plan for proof of ownership requirements for immobilizer key registration (title/registration + ID are commonly requested)

⚠️ Common Mistakes to Avoid

âś—

Buying a look-alike Hyundai fob with a different FCC ID and assuming it will program

âś—

Replacing only the shell and accidentally damaging the circuit board or losing the small rubber button pads

âś—

Assuming the remote can be paired without addressing the immobilizer (remote may work, but the vehicle may not start)

Related Model Years

Key fob compatibility often spans multiple model years. These years typically share similar key systems:

2022 2023 2024

Frequently Asked Questions

How can the correct FCC ID be confirmed for a 2024 Hyundai Tucson key fob?

The most reliable method is checking the FCC ID printed on an original working fob (often on the back label or inside the case). If no working fob is available, vehicle documentation and parts catalogs may help, but consumers generally find the FCC ID on the original fob is the safest match because Hyundai keys can share the same exterior shape with different electronics.

Does a 2024 Hyundai Tucson Smart Key use a CR2032 battery?

Many 2024 Tucson Smart Keys commonly use a CR2032 coin-cell battery. If the fob range drops, the car shows a “Key not detected” message, or the fob works intermittently, replacing the battery is often the first troubleshooting step before assuming the fob needs replacement.

Can a 2024 Hyundai Tucson key fob be programmed without professional tools?

For most US-market 2024 Tucson Smart Keys, pairing typically requires secure registration tools and cannot be completed with simple button sequences. Options typically include having the key registered through authorized channels or qualified automotive key programming equipment, especially when immobilizer start authorization is involved.

If the remote buttons work, why might the 2024 Tucson still not start?

Remote lock/unlock and engine start authorization are often separate systems. The fob may operate the doors but still fail to start the vehicle if the immobilizer portion (Smart Key authentication or transponder registration) is not successfully matched to the vehicle.

Is buying an aftermarket 2024 Hyundai Tucson key fob safe?

Aftermarket can be a reasonable option, but consumers generally find outcomes depend on exact FCC ID matching, board revision compatibility, and seller return terms. Refurbished OEM fobs can sometimes provide OEM electronics with lower upfront cost, while aftermarket shells are often best for cosmetic repair when the original electronics are reused.

Need Help With a Specific Situation?

🚨 Lost All Keys What to do when you've lost your only key ➕ Get a Spare Add a backup key before emergencies 🔋 Dead Battery Replace your key fob battery ⚖️ Compare Options Full comparison of all options

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Last updated: 2026-01-04