[Solved] Bought used 2020 Mercedes Benz Mercedes AMG - transponder code missing

2556 views - Last reply: March 09, 2025
This topic is closed for new replies.
Alphabeta
Member since April 2022 • 17 posts

Need the key code to program a new key for my 2020 Mercedes Benz Mercedes AMG - help?

Posted on March 09, 2025
Adminbot
Staff Member • 1537 posts

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

Posted on March 10, 2025

Replies (6)

Ironman
Member • 123 posts

Appreciate any advice—my 2020 Mercedes Benz Mercedes AMG won’t recognize the key.

March 10, 2025 Reply
Viperstrike
Member • 113 posts

My 2020 Mercedes Benz Mercedes AMG won’t budge without the code. Hoping this helps.

March 11, 2025 Reply
Xenomorph
Member • 103 posts

This is gold. I’ve been locked out of my 2020 Mercedes Benz Mercedes AMG for days.

March 12, 2025 Reply
Goldeneye
Member • 107 posts

This is exactly what I need for my 2020 Mercedes Benz Mercedes AMG, thanks for posting!

March 13, 2025 Reply
Papasmurf
Member • 31 posts

Thanks! This could save me a trip to the dealership for my 2020 Mercedes Benz Mercedes AMG.

March 14, 2025 Reply
Goldenret
Member • 23 posts

This just might solve my 2020 Mercedes Benz Mercedes AMG's ignition issue.

March 15, 2025 Reply

Check the news !

Car Audio & Customization Show
🚗 Local Meetup: Car Audio & Customization Show
The local meetup for serious enthusiasts

📍 Where: Shopping Mall Parking Lot
📅 When: May 9 @ 11AM-4PM

Event features:
Photoshoot Area | Ride-Alongs

🔧 Forum Members: Check our forum thread for latest updates! 👋

🔩 Electrical Diagnostics Lab

👩‍🏭 Instructors:
• Suspension Guru David Klein
• Custom Fabricator Mike 'Wrench' O'Connor

⚙️ Hands-On Activities:
• Paint correction demonstrations
• 4-hour intensive training
• Personal coaching

📋 Skills Covered:
Leather repair | Headliner replacement | Trim restoration

🏎️ May 17, 2026 at 11:00 AM (4-hour)

💡 Early registrants get preferred work bay access!

Workshop: Electrical Diagnostics Lab
Race Car Setup Seminar

🏁 Race Car Setup Seminar

🔧 Instructor: Drivetrain Engineer Sarah Wong

💻 Workshop Includes:
• Data interpretation techniques
• 4-hour intensive hands-on training
• Turbo sizing | Intercooling | Wastegate control

📈 Bonus: Exclusive tuner network discounts

⏱️ Next Session: May 9, 2026 at 9:00 AM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Did you know? Proper tuning can add 20-30% more power from the same hardware

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 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
Yes, a skilled auto locksmith can extract the broken key and make a replacement. They can often do this without damaging the ignition cylinder. The new key will need programming if it has a transponder chip.
Key Tip: Store your key code separately from your keys
Security Systems
A flashing security light often indicates an immobilizer issue. Solid light suggests the system is armed but not recognizing your key. Causes: faulty key chip, damaged antenna ring, low battery, or system needs reprogramming.
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 Tip: Consider key insurance for expensive smart keys
Key Fact: Some luxury car keys can cost $800+ to replace at dealerships

🔑 KEY SERVICES CLASSIFIEDS

Key Fob Repair & Battery Replacement
$25+
Posted: Apr 23, 2026
Fob not working? We fix broken buttons, replace batteries, and resync to your vehicle. Most repairs done while you wait. Water damage specialists available.
Call: 851-908-3211
Transponder Key Duplication
$65+
Posted: Apr 29, 2026
Get spare keys made before you lose yours! Cuts and programs most transponder keys on the spot. Cheaper than dealerships. 15+ years experience.
Call: 422-571-0121
Smart Key Programming Special
$150
Posted: Apr 19, 2026
Push-to-start key replacement for Toyota, Honda, Nissan, Ford. Includes programming and testing. Limited time offer - normally $200+. Call for availability.
Call: 628-676-2241
Car Key Extraction Service
$45+
Posted: Apr 23, 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: 680-855-7254
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
May 7, 2026

Mobile Key Programming Clinic

by Car Key Solutions
In-depth class covering push-to-start systems and proximity key programming techniques
Workshop
May 29, 2026

Immobilizer System Seminar

by Auto Key Masters
Become certified in vehicle security systems with our intensive 2-day course
Seminar
May 4, 2026

Immobilizer System Seminar

by VIN Decoder Pros
In-depth class covering push-to-start systems and proximity key programming techniques
Workshop
May 15, 2026

Mobile Key Programming Clinic

by Locksmith Pro
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