2024 Hyundai Santa Fe Key Fob Guide (US): Smart Key, Remote Start, Batteries & Replacement Options

The 2024 Hyundai Santa Fe sold in the United States typically uses a proximity “Smart Key” system (push-button start on most trims), and many vehicles also support remote start from the fob depending on trim and equipment. Replacement keys are not all interchangeable—frequency, FCC ID, and internal board type must match the vehicle and the original key. Consumers generally find the biggest differences in replacement experience come down to whether an OEM key is used, and whether programming requires dealer-level security access. This page breaks down the key types, what to verify before buying, and typical price ranges in the US as of early 2026.

2 Key Types
$250-$600 Dealer Range
$40-$220 Aftermarket Range

Compatible Key Fob Types

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

Proximity Smart Key (Push-Button Start)

A proximity Smart Key communicates with the Santa Fe using encrypted RF and an immobilizer transponder, allowing passive entry (unlock when approaching) and push-button start when the key is inside the vehicle. The remote buttons also control lock/unlock and other features, while the immobilizer portion is what authorizes the engine to start.

Features

  • Proximity entry (keyless access)
  • Push-button start authorization (immobilizer)
  • Remote lock/unlock and panic (varies by trim)

Buttons

unlocklockpanicremote start

Battery

CR2032

3-5 years typical typical lifespan

Dealer OEM $250-$550 Programming included
Aftermarket $80-$220 Programming separate

Programming

🏢 Dealer Required

Options typically include adding a new Smart Key through dealer-level immobilizer/security authorization. Many owners find that even with a correct key shell, the internal board/FCC ID and immobilizer data must match, and programming access is the limiting factor.

⚠️ Common Issues

  • Wrong FCC ID/frequency for the US market (key won’t program or functions won’t work)
  • Weak CR2032 battery causing intermittent passive entry or “Key Not Detected” warnings

Remote Head Key (Turn-Key Ignition, if equipped)

Some Santa Fe configurations in prior years used a traditional metal key with integrated remote buttons, combining a transponder (immobilizer) with a remote transmitter. If a 2024 Santa Fe is equipped with a physical ignition key (uncommon in the US), the remote functions and immobilizer still must match the vehicle’s security system.

Features

  • Mechanical key blade for door/ignition (if equipped)
  • Integrated immobilizer transponder for starting
  • Remote lock/unlock and panic (varies by trim)

Buttons

unlocklockpanicremote start

Battery

CR2032

3-5 years typical typical lifespan

Dealer OEM $180-$450 Programming included
Aftermarket $40-$150 Programming separate

Programming

🏢 Dealer Required

Programming requirements depend on the immobilizer system and whether the vehicle uses a proximity Smart Key setup. Consumers generally find that newer Hyundai immobilizer systems often require dealer-level credentialed access for adding keys.

⚠️ Common Issues

  • Key blade cut is correct but immobilizer chip is not compatible (engine won’t start)
  • Aftermarket remote functions partially work (lock/unlock works but remote start or trunk does not, if equipped)

Cost Comparison: Your Options

🏢

Dealership

$250-$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

$150-$450
  • 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

$40-$220
  • 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 driven by whether an OEM Smart Key is required, whether the vehicle needs dealer-level security authorization to add keys, and whether cutting an emergency insert key is needed. Aftermarket fobs can cost less upfront, but consumers generally find compatibility and return policies matter more than the sticker price.

đź›’ Buyer's Checklist

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

1 Verify the FCC ID matches your current key (check the back of the fob or inside the shell)
2 Confirm the vehicle is a US-market 2024 Santa Fe (frequency and part numbers can differ by country)
3 Match the exact features: remote start, liftgate button, and panic layout vary by trim and option packages
4 Check the emergency key blade style (insert key) and ensure the replacement includes the correct insert or can accept your insert
5 Buy from a source with clear return terms in case the FCC ID/board revision is not compatible

⚠️ Common Mistakes to Avoid

âś—

Buying a look-alike fob shell with the wrong internal board/FCC ID (it may fit your hand but won’t pair to the car)

âś—

Assuming all 2024 Santa Fe keys are interchangeable across trims and packages (button layout and functions can differ)

âś—

Replacing the fob when the issue is only a weak CR2032 battery or dirty battery contacts

Related Model Years

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

2024

Frequently Asked Questions

Does the 2024 Hyundai Santa Fe use a Smart Key or a standard remote key in the US?

In the United States, the 2024 Santa Fe is typically equipped with a proximity Smart Key system associated with push-button start on most trims. Some vehicles may have different configurations depending on trim level and equipment, so checking your original key style and the vehicle’s start method (push-button vs. turn-key) is the quickest way to confirm.

What battery does a 2024 Hyundai Santa Fe key fob use?

Most Hyundai Smart Key fobs for this generation commonly use a CR2032 coin-cell battery. If the fob becomes inconsistent (reduced range, intermittent passive entry, or “Key Not Detected”), consumers generally find a fresh name-brand CR2032 and cleaning the battery contacts resolves many issues.

Can a 2024 Santa Fe key fob be programmed at home?

For most 2024 Santa Fe Smart Key systems, options typically include programming through dealer-level immobilizer/security access rather than DIY pairing. Even when a replacement fob is correct physically, the immobilizer portion must be enrolled to the vehicle, which is the step that usually limits self-programming.

If I buy an aftermarket key fob online, will it work with my 2024 Santa Fe?

It may work, but compatibility depends on matching the correct FCC ID/board revision, frequency for the US market, and feature set (remote start, liftgate, etc.). Consumers generally find that verifying the FCC ID from the original fob and confirming return eligibility before purchase reduces the risk of ending up with a non-programmable or partially functional fob.

What should I do if I lost all keys to my 2024 Hyundai Santa Fe?

When all keys are lost, the vehicle typically needs a new key enrolled to the immobilizer system using credentialed security access, and an emergency key insert may also need to be cut. Options typically include using OEM keys for the best compatibility, and having proof of ownership ready, since security systems generally require it for key replacement.

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