[Free Tool] Trying to program a spare key - need the key code for my 2020 Hyundai Elantra SEL Sedan

2290 views - Last reply: May 21, 2025
This topic is closed for new replies.
Techwiz
Member since September 2022 • 46 posts

Looking for my 2020 Hyundai Elantra SEL Sedan's key code to program a new key fob

Posted on May 21, 2025
Adminbot
Staff Member • 1768 posts

Hello! We've developed a VIN-based tool to help you get your key code for the 2020 Hyundai Elantra SEL Sedan. Check it out here: VIN Key Code Generator.

Posted on May 22, 2025

Replies (5)

Zombieslayer
Member • 90 posts

Does anyone know if this works on push-start 2020 Hyundai Elantra SEL Sedans?

May 22, 2025 Reply
Viperstrike
Member • 130 posts

Key code problems with my 2020 Hyundai Elantra SEL Sedan as well. Subscribed!

May 23, 2025 Reply
Zerocool
Member • 83 posts

My 2020 Hyundai Elantra SEL Sedan refuses to start. Could be the key code—trying this fix.

May 24, 2025 Reply
Megamind
Member • 47 posts

Good luck to everyone dealing with 2020 Hyundai Elantra SEL Sedan key issues!

May 25, 2025 Reply
Goldenret
Member • 34 posts

Following this for my 2020 Hyundai Elantra SEL Sedan. Please update if it works!

May 26, 2025 Reply

Check the news !

Classic & Vintage Car Rally
🏎️ Local Meetup: Classic & Vintage Car Rally
No trophies, just cool cars and cool people

🗺️ Where: Brewery District
⏰ When: May 20 @ 12AM-5PM

Event features:
Tech Sessions | DIY Demonstrations

🔩 Forum Members: Special section just for forum members! 👍

🔧 Classic Car Restoration Workshop

👨‍🔧 Instructors:
• Race Engineer Emily Torres
• Restoration Pro Alex Petrov

🛠️ Hands-On Activities:
• Roll cage installation demo
• 6-hour intensive training
• Personal coaching

📝 Skills Covered:
Harness installation | Fire suppression | Weight balance

🚗 May 20, 2026 at 9:00 AM (6-hour)

🔥 Limited to 15 participants - reserve your spot now!

Workshop: Classic Car Restoration Workshop
Street to Strip Tuning Workshop

🏁 Street to Strip Tuning Workshop

🔧 Instructor: NASCAR Crew Chief Lisa Thompson

💻 Workshop Includes:
• Track vs street setup comparisons
• 6-hour comprehensive hands-on training
• Cooling system optimization | Heat management

📈 Bonus: 20% discount on performance parts

⏱️ Next Session: May 10, 2026 at 3:00 PM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Pro Tip: Supporting mods (fuel system, cooling) are often needed for big power gains

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

Common questions about key programming, fob issues, and replacement options

Key Fob Issues
1) Find the seam and pry open the fob (some have tiny screws) 2) Note battery orientation 3) Remove old battery (CR2032 is most common) 4) Insert new battery 5) Reassemble. Test all buttons - if issues remain, the fob may need reprogramming.
Key Tip: Consider key insurance for expensive smart keys
Lost Keys
Dealerships can often cut keys using your VIN, but will require proof of ownership. This only works for original factory keys - aftermarket or previously replaced locks won't match. The key will still need programming to start the car if it has a transponder.
Key Tip: Always have at least two working keys to avoid expensive replacements
Key Programming
Most transponder keys and smart keys can be reprogrammed if they haven't been damaged. Basic mechanical-only keys (no chip) can't be reprogrammed - they must be physically cut to match your locks.
Key Programming
Professional key programming requires: diagnostic tools to access the immobilizer system, key code software, transponder programmers, and often proprietary manufacturer equipment. Some locksmiths and all dealers have these tools.
Lost Keys
Dealerships can often cut keys using your VIN, but will require proof of ownership. This only works for original factory keys - aftermarket or previously replaced locks won't match. The key will still need programming to start the car if it has a transponder.
Key Tip: Store your key code separately from your keys
Key Fact: Many cars can store up to 8 different key codes in memory

🔑 KEY SERVICES CLASSIFIEDS

Immobilizer System Reset
$95+
Posted: Apr 28, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 972-477-8028
Car Key Extraction Service
$45+
Posted: Apr 19, 2026
Broken key stuck in ignition or door? We can remove it without damage and make new keys same day. Emergency service available 24/7 for lockouts.
Call: 573-282-0759
Anti-Theft System Repair
$85+
Posted: Apr 22, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 790-869-6680
Key Fob Case Replacement
$35
Posted: Apr 29, 2026
Cracked or damaged fob housing? We transfer your electronics to a new case. Multiple color options available. Most models in stock. 15-minute service.
Call: 930-688-0423
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 9, 2026

Mobile Key Programming Clinic

by Auto Key Masters
Comprehensive guide to troubleshooting and resetting immobilizer systems in modern vehicles
Seminar
May 19, 2026

Lost Key Solution Roadshow

by Car Key Solutions
Learn dealer-level programming techniques normally only available at franchise shops
Workshop
May 12, 2026

Smart Key Programming Class

by Car Key Solutions
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Workshop
May 17, 2026

Car Security Certification Course

by Car Key Solutions
Comprehensive guide to troubleshooting and resetting immobilizer systems in modern vehicles

Need immediate service? Call our 24/7 hotline: 1-800-KEY-HELP

Want to list your key service? Join our provider network

Last posts on the forum