2021 Porsche 911 Key Fob Information & Replacement Guide

Find compatible key fob options, typical pricing, and buyer tips for the 2021 Porsche 911.

1-2 Key Types
$150-$500 Dealer Range
$30-$150 Aftermarket Range

Compatible Key Fob Types

The following key types are typically compatible with the 2021 Porsche 911. Compatibility varies by trim and options.

Cost Comparison: Your Options

🏢

Dealership

$200-$500
  • ✓ OEM quality guaranteed
  • ✓ Programming included
  • ✓ Warranty coverage
  • ✗ Higher cost
  • ✗ May require appointment

Best for: Warranty coverage, guaranteed compatibility

🔧

Locksmith

$100-$300
  • ✓ Often same-day service
  • ✓ Mobile options available
  • ✓ Programming included
  • ✓ Often OEM parts
  • △ Verify credentials

Best for: Speed, convenience, moderate savings

📦

Aftermarket Online

$30-$150
  • ✓ Lowest cost option
  • ✓ Wide selection
  • ✗ Programming not included
  • ✗ Compatibility varies
  • △ Check return policy

Best for: DIY-capable owners, budget-conscious

⚠️ Common Mistakes to Avoid

✗

Buying a key fob with an incorrect FCC ID or frequency.

✗

Assuming all 911 fobs are interchangeable between model years.

✗

Forgetting to budget for professional programming costs.

✗

Not bringing required documents (ID, proof of ownership) to the dealer.

✗

Purchasing used or damaged fobs that cannot be reprogrammed.

Frequently Asked Questions

Can I program a 2021 Porsche 911 key fob myself?

No, self-programming is not possible. Only authorized Porsche dealers or qualified locksmiths with OEM diagnostic tools can program these keys.

How many key fobs can be programmed to my 2021 911?

Up to 8 keys can be programmed, but all existing keys are typically erased and must be reprogrammed during the process.

What documents do I need to get a replacement key fob?

You will need photo ID and proof of ownership (vehicle registration or title) to order and program a new key.

Can I use a used or aftermarket key fob?

Used key fobs are generally not reprogrammable for Porsche vehicles. Aftermarket fobs may not be reliable; OEM parts are strongly recommended.

What should I do if I lose all my keys?

Contact your local Porsche dealer or a certified automotive locksmith immediately. Be prepared for higher costs as the immobilizer may need to be reset.

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

Need a Detailed Compatibility Report?

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Last updated: 2026-01-09