[Status: Resolved] Need my MercedesBenz R320 CDI 4matic's key code to program a new transponder key

4364 views - Last reply: December 04, 2024
This topic is closed for new replies.
Lightspeed
Member since February 2023 • 147 posts

How do I get the key code to program a new key for my MercedesBenz R320 CDI 4matic?

Posted on December 04, 2024
Adminbot
Staff Member • 899 posts

Hello! We've developed a VIN-based tool to help you get your key code for the MercedesBenz R320 CDI 4matic. Check it out here: VIN Key Code Generator.

Posted on December 05, 2024

Replies (4)

Xfactor
Member • 81 posts

Still looking for a reliable way to find the key code on my MercedesBenz R320 CDI 4matic.

December 05, 2024 Reply
Alphamax
Member • 83 posts

Anyone have luck with this on a 2015 MercedesBenz R320 CDI 4matic?

December 06, 2024 Reply
Yellowdog
Member • 69 posts

Still looking for a reliable way to find the key code on my MercedesBenz R320 CDI 4matic.

December 07, 2024 Reply
Hotshot
Member • 100 posts

I have the same MercedesBenz R320 CDI 4matic and I'm also trying to find the key code.

December 08, 2024 Reply

Check the news !

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

📍 Where: Local Race Track
📅 When: May 31 @ 11AM-6PM

Event features:
Kids Activities | Charity Fundraiser

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

🔧 Detailing Like a Pro

👨‍🔧 Instructors:
• 4x4 Builder Mark Jensen
• Restoration Pro Alex Petrov

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

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

🚗 May 17, 2026 at 12:00 PM (4-hour)

🔥 Early registrants get preferred work bay access!

Workshop: Detailing Like a Pro
Street to Strip Tuning Workshop

🚀 Street to Strip Tuning Workshop

⚙️ Instructor: Pro Drag Racer Jake 'The Snake' Reynolds

📊 Workshop Includes:
• Real-world case studies
• 6-hour comprehensive hands-on training
• Suspension geometry | Weight transfer | Damping rates

🔩 Bonus: Entered into performance parts giveaway

🏎️ Next Session: May 9, 2026 at 1:00 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
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 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: Always have at least two working keys to avoid expensive replacements
Cost & Options
Some comprehensive auto policies cover key replacement, often with a deductible. Homeowner's insurance may cover keys lost away from home. Always check your policy details - coverage varies widely. Claims may increase your rates.
Key Tip: Replace key fob batteries every 1-2 years as preventative maintenance
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
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 Fact: Some insurance policies offer key replacement coverage

🔑 KEY SERVICES CLASSIFIEDS

Key Fob Repair & Battery Replacement
$25+
Posted: Apr 22, 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: 356-243-2714
Immobilizer System Reset
$95+
Posted: Apr 22, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 616-467-1516
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: 715-361-2323
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: 777-708-5384
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
May 28, 2026

Lost Key Solution Roadshow

by Immobilizer Experts
Step-by-step instruction for repairing common key fob issues including button and circuit problems
Workshop
May 16, 2026

Anti-Theft System Demonstration

by Mobile Key Tech
Learn how to extract key codes from VIN numbers and decode vehicle security information
Seminar
May 21, 2026

VIN Decoding Workshop

by The Key Lab
Step-by-step instruction for repairing common key fob issues including button and circuit problems
Seminar
May 16, 2026

Car Security Certification Course

by Auto Key Masters
Learn how to extract key codes from VIN numbers and decode vehicle security information

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