[Archived] Options when VIN is unreadable for MercedesBenz CClass AMG 43 Coupe key code

1048 views - Last reply: April 26, 2025
This topic is closed for new replies.
Bluemoon
Member since February 2023 • 55 posts

Looking for my MercedesBenz CClass AMG 43 Coupe's key code to program a new key fob

Posted on April 26, 2025
Adminbot
Staff Member • 1569 posts

Hello! We've developed a VIN-based tool to help you get your key code for the MercedesBenz CClass AMG 43 Coupe. Check it out here: VIN Key Code Generator.

Posted on April 27, 2025

Replies (4)

Javajunkie
Member • 37 posts

This trick worked for my buddy's MercedesBenz CClass AMG 43 Coupe. Giving it a go myself.

April 27, 2025 Reply
Purplehaze
Member • 99 posts

Great info! Needed this for my old MercedesBenz CClass AMG 43 Coupe.

April 28, 2025 Reply
Bigfoot
Member • 26 posts

Looking for the same thing for my MercedesBenz CClass AMG 43 Coupe, hope someone can help.

April 29, 2025 Reply
Whiterabbit
Member • 110 posts

My MercedesBenz CClass AMG 43 Coupe has the same problem—any luck getting the key code?

April 30, 2025 Reply

Check the news !

Car Audio & Customization Show
🏎️ Local Meetup: Car Audio & Customization Show
Cruise-ins, burnouts, and good times

🗺️ Where: Downtown Main Street
⏰ When: May 14 @ 11AM-4PM

Event features:
Tech Sessions | DIY Demonstrations

🔩 Forum Members: First 50 forum members get free dash plaques! 👍

🔧 Performance Modding 101

👨‍🔧 Instructors:
• Suspension Guru David Klein
• 4x4 Builder Mark Jensen

🛠️ Hands-On Activities:
• Complete brake system overhaul demo
• 6-hour intensive training
• Personal coaching

📝 Skills Covered:
Alignment angles | Spring rates | Damping adjustment

🚗 May 13, 2026 at 11:00 AM (6-hour)

🔥 Take home custom workshop manual!

Workshop: Performance Modding 101
Carburetor to EFI Conversion Clinic

🚀 Carburetor to EFI Conversion Clinic

⚙️ Instructor: NASCAR Crew Chief Lisa Thompson

📊 Workshop Includes:
• Live dyno tuning demonstrations
• 4-hour intensive hands-on training
• Exhaust scavenging | Header design | Backpressure

🔩 Bonus: Exclusive tuner network discounts

🏎️ Next Session: May 10, 2026 at 9:00 AM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Remember: More power means you'll need better brakes and tires

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

Key Programming
Programming syncs the key's transponder chip with your car's immobilizer system. The process varies by manufacturer but generally involves: 1) authenticating with the car's computer 2) erasing old keys if needed 3) programming new key codes 4) testing functionality.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Lost Keys
Locksmiths or dealers can: 1) Decode your door or ignition lock to determine key cuts 2) Access your car's key code through manufacturer databases (with proof of ownership) 3) Program new transponder keys using diagnostic equipment.
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.
Lost Keys
Costs vary widely: Basic keys: $50-$150, Transponder keys: $150-$300, Smart keys/fobs: $200-$800, Dealership replacements typically cost 20-50% more than locksmiths. Emergency/lockout service adds $50-$150.
Security Systems
Some systems reset by: 1) Disconnecting battery for 15+ minutes 2) Using original keys in specific sequences 3) Professional diagnostic reset. Consult your manual - procedures vary. Persistent issues may require dealer-level tools.
Key Fact: Key programming typically takes 15-30 minutes for professionals

🔑 KEY SERVICES CLASSIFIEDS

Mobile Key Programming Service
$75+
Posted: Apr 22, 2026
Professional car key programming for most makes/models. We come to you! Transponder keys, fobs, and smart keys. Same-day service available. All work guaranteed.
Call: 880-488-4495
Key Fob Repair & Battery Replacement
$25+
Posted: Apr 26, 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: 638-900-7004
Transponder Key Duplication
$65+
Posted: Apr 22, 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: 229-517-8170
Dealer Alternative Key Service
40% Less
Posted: Apr 21, 2026
Same quality as dealership without the markup. We have the same programming tools but charge significantly less. All major European, Asian, and domestic brands.
Call: 297-605-2940
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
May 15, 2026

Anti-Theft System Demonstration

by Mobile Key Tech
Comprehensive guide to troubleshooting and resetting immobilizer systems in modern vehicles
Seminar
May 21, 2026

Transponder Key Tech Day

by Car Key Solutions
In-depth class covering push-to-start systems and proximity key programming techniques
Workshop
May 27, 2026

Car Security Certification Course

by VIN Decoder Pros
Step-by-step instruction for repairing common key fob issues including button and circuit problems
Workshop
May 15, 2026

Transponder Key Tech Day

by Locksmith Pro
In-depth class covering push-to-start systems and proximity key programming techniques

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