[Confirmed Fix] Key code needed after computer reset on MercedesBenz E450 4matic AllTerrain

2344 views - Last reply: August 06, 2024
This topic is closed for new replies.
Heidi
Member since September 2022 • 98 posts

How to get the factory key code for my MercedesBenz E450 4matic AllTerrain to make keys?

Posted on August 06, 2024
Adminbot
Staff Member • 541 posts

Hello! We've developed a VIN-based tool to help you get your key code for the MercedesBenz E450 4matic AllTerrain. Check it out here: VIN Key Code Generator.

Posted on August 07, 2024

Replies (3)

Metalhead
Member • 7 posts

My MercedesBenz E450 4matic AllTerrain's been in the garage for a week over this. Thanks!

August 07, 2024 Reply
Frostymug
Member • 43 posts

Crossing my fingers—really need this for my MercedesBenz E450 4matic AllTerrain!

August 08, 2024 Reply
Airjordan
Member • 60 posts

Was about to give up on my MercedesBenz E450 4matic AllTerrain, but this gives me hope.

August 09, 2024 Reply

Check the news !

Lowrider Spectacular
🏎️ Local Meetup: Lowrider Spectacular
From daily drivers to show queens

🗺️ Where: Industrial Park
⏰ When: May 28 @ 12AM-8PM

Event features:
Tech Sessions | DIY Demonstrations

🔩 Forum Members: Check our forum thread for latest updates! 👍

🔧 Track Prep & Safety Session

👨‍🔧 Instructors:
• Custom Fabricator Mike 'Wrench' O'Connor
• Electronics Expert Priya Patel

🛠️ Hands-On Activities:
• Ceramic coating application
• 4-hour intensive training
• Personal coaching

📝 Skills Covered:
ECU mapping | Air/fuel ratios | Dyno tuning

🚗 May 13, 2026 at 9:00 AM (4-hour)

🔥 Early registrants get preferred work bay access!

Workshop: Track Prep & Safety Session
Performance Engine Building 101

🔋 Performance Engine Building 101

🧰 Instructor: Factory ECU Engineer Dr. Sophia Chen

📱 Workshop Includes:
• Common tuning mistake avoidance
• 6-hour comprehensive hands-on training
• Air/fuel ratios | Timing maps | Boost curves

📉 Bonus: Custom tune file included

🔌 Next Session: May 3, 2026 at 10:00 AM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Warning: Cheap parts often cost more in the long run due to failures

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

Key Programming
Common reasons: wrong key type for your vehicle, anti-theft system needs reset, low car battery voltage during programming, or the key isn't properly synced. Some cars also have programming limits (only 2-4 keys can be registered).
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
Key Programming
Some vehicles allow DIY key programming using specific sequences (like turning ignition on/off with original keys). However, most modern cars require specialized equipment only locksmiths or dealers have. Check your owner's manual for your specific model.
Key Tip: Avoid exposing key fobs to water or extreme temperatures
Key Fob Issues
Common causes: dead battery (most common), water damage, internal circuit damage, or the fob lost synchronization with your car. Try replacing the battery first. If that doesn't help, the fob may need reprogramming or replacement.
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 Tip: Store your key code separately from your keys
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.
Key Fact: Modern transponder keys have been required in all new US vehicles since 1998

🔑 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: 391-831-4558
Lost Car Key Replacement
$120+
Posted: Apr 28, 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: 395-649-6664
Transponder Key Duplication
$65+
Posted: Apr 23, 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: 880-916-7637
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: 970-577-8893
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 12, 2026

Anti-Theft System Demonstration

by Fob Fixers
Learn dealer-level programming techniques normally only available at franchise shops
Seminar
May 2, 2026

VIN Decoding Workshop

by Locksmith Pro
Learn how to extract key codes from VIN numbers and decode vehicle security information
Seminar
May 27, 2026

Mobile Key Programming Clinic

by Fob Fixers
Comprehensive guide to troubleshooting and resetting immobilizer systems in modern vehicles
Workshop
May 9, 2026

Immobilizer System Seminar

by The Key Lab
Solutions for when all keys are lost - from code pulling to immobilizer resets

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