[Free Solution] Bought a used MercedesBenz A Class Progressive, no key code - help!

743 views - Last reply: August 21, 2024
This topic is closed for new replies.
Zombiehunt
Member since June 2022 • 99 posts

How can I retrieve my MercedesBenz A Class Progressive's key code to make a spare key?

Posted on August 21, 2024
Adminbot
Staff Member • 905 posts

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

Posted on August 22, 2024

Replies (4)

Silversurf
Member • 77 posts

My MercedesBenz A Class Progressive's been in the garage for a week over this. Thanks!

August 22, 2024 Reply
Knightrider
Member • 102 posts

Struggling with the same issue on my MercedesBenz A Class Progressive, following this thread.

August 23, 2024 Reply
Supernova
Member • 109 posts

Following along—same issue with my MercedesBenz A Class Progressive.

August 24, 2024 Reply
Ultrasonic
Member • 145 posts

Still can’t find the code for my MercedesBenz A Class Progressive. This might do it.

August 25, 2024 Reply

Check the news !

Annual Muscle Car Meetup
🚙 Local Meetup: Annual Muscle Car Meetup
From daily drivers to show queens

🏁 Where: Regional Airport (static display area)
📆 When: May 28 @ 11AM-4PM

Event features:
Show 'n Shine | Dyno Challenge | Parts Swap

⚙️ Forum Members: Forum members get preferred parking! ✨

🧰 Hands-On Engine Tuning Workshop

👨‍🏫 Instructors:
• Restoration Pro Alex Petrov
• Safety Inspector Robert Yang

🔌 Hands-On Activities:
• Live engine tuning session
• 4-hour intensive training
• Personal coaching

📅 Skills Covered:
Multimeter use | Wiring diagrams | Short circuit tracing

🚙 May 10, 2026 at 11:00 AM (4-hour)

✨ Free parts giveaway for all attendees!

Workshop: Hands-On Engine Tuning Workshop
Performance Engine Building 101

🚀 Performance Engine Building 101

⚙️ Instructor: Classic Muscle Tuner Tom 'Torque' Jenkins

📊 Workshop Includes:
• Live dyno tuning demonstrations
• 6-hour comprehensive hands-on training
• Turbo sizing | Intercooling | Wastegate control

🔩 Bonus: Personalized setup recommendation

🏎️ Next Session: May 13, 2026 at 12:00 PM

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

Security Systems
An anti-theft system that prevents the engine from starting unless it detects the correct transponder chip in the key. The chip sends a unique code to the car's computer when you turn the ignition. No match = no start, even with a physically matching key.
Key Tip: Replace key fob batteries every 1-2 years as preventative maintenance
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: Always have at least two working keys to avoid expensive replacements
Lost Keys
1) Contact a locksmith who specializes in automotive keys or your dealership 2) Provide proof of ownership (registration, title, ID) 3) They'll either cut new keys by code or reprogram your car's system 4) This is expensive ($200-$800) as the immobilizer may need resetting.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Security Systems
An anti-theft system that prevents the engine from starting unless it detects the correct transponder chip in the key. The chip sends a unique code to the car's computer when you turn the ignition. No match = no start, even with a physically matching key.
Key Tip: Replace key fob batteries every 1-2 years as preventative maintenance
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.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Key Fact: Many cars can store up to 8 different key codes in memory

🔑 KEY SERVICES CLASSIFIEDS

Lost Car Key Replacement
$120+
Posted: Apr 23, 2026
Lost all your keys? We can cut and program new ones even without originals. Dealership alternative at 40% less. Proof of ownership required. Serving all major brands.
Call: 806-403-9180
Immobilizer System Reset
$95+
Posted: Apr 25, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 293-309-5965
Anti-Theft System Repair
$85+
Posted: Apr 24, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 648-817-2677
Key Fob Case Replacement
$35
Posted: Apr 20, 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: 337-933-6527
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 17, 2026

Dealer-Level Programming Workshop

by Car Key Solutions
Hands-on experience with the newest transponder key cloning and programming equipment
Workshop
May 23, 2026

Dealer-Level Programming Workshop

by VIN Decoder Pros
Learn dealer-level programming techniques normally only available at franchise shops
Workshop
May 24, 2026

Transponder Key Tech Day

by VIN Decoder Pros
Hands-on experience with the newest transponder key cloning and programming equipment
Seminar
May 18, 2026

Immobilizer System Seminar

by VIN Decoder Pros
Step-by-step instruction for repairing common key fob issues including button and circuit problems

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