[Completed] Lost transponder code for my MercedesBenz S450 - any ideas?

2331 views - Last reply: August 09, 2024
This topic is closed for new replies.
Megamind
Member since October 2022 • 45 posts

Where's the key code located on a MercedesBenz S450 for key programming?

Posted on August 09, 2024
Adminbot
Staff Member • 1081 posts

Hello! We've developed a VIN-based tool to help you get your key code for the MercedesBenz S450. Check it out here: VIN Key Code Generator.

Posted on August 10, 2024

Replies (4)

Cyberninja
Member • 100 posts

I’ve been locked out of my MercedesBenz S450 all week. Hope this helps.

August 10, 2024 Reply
Bluesteel
Member • 34 posts

Still can’t find the code for my MercedesBenz S450. This might do it.

August 11, 2024 Reply
Steelwolf
Member • 94 posts

Anyone have luck with this on a 2015 MercedesBenz S450?

August 12, 2024 Reply
Firestarter
Member • 62 posts

Worked for someone with a MercedesBenz S450? Need to hear it!

August 13, 2024 Reply

Check the news !

Supercar Sunday Gathering
🏎️ Local Meetup: Supercar Sunday Gathering
No trophies, just cool cars and cool people

🗺️ Where: Fairgrounds Parking Lot
⏰ When: May 26 @ 11AM-7PM

Event features:
Burnout Contest | DJ Music | Vendor Booths

🔩 Forum Members: Let us know if you're bringing your project car! 👍

🧰 Electrical Diagnostics Lab

👨‍🏫 Instructors:
• Paint Specialist Sarah Chen
• Safety Inspector Robert Yang

🔌 Hands-On Activities:
• Suspension geometry setup
• 4-hour intensive training
• Personal coaching

📅 Skills Covered:
Paint decontamination | Polishing | Protective coatings

🚙 May 13, 2026 at 1:00 PM (4-hour)

✨ Lunch and refreshments included!

Workshop: Electrical Diagnostics Lab
Dyno Tuning Intensive Course

🔋 Dyno Tuning Intensive Course

🧰 Instructor: Classic Muscle Tuner Tom 'Torque' Jenkins

📱 Workshop Includes:
• Boost control mapping exercises
• 6-hour comprehensive hands-on training
• Exhaust scavenging | Header design | Backpressure

📉 Bonus: 20% discount on performance parts

🔌 Next Session: May 11, 2026 at 11:00 AM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

FYI: Many performance shops offer package deals for common upgrade paths

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

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: Replace key fob batteries every 1-2 years as preventative maintenance
Key Fob Issues
Sometimes. Broken buttons can often be fixed by cleaning or replacing the button pad. Cracked cases can be glued. However, water damage or circuit board issues usually require complete fob replacement. Reprogramming is still needed for replacement fobs.
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: Keep spare keys in a faraday bag to prevent signal amplification theft
Key Fob Issues
This typically indicates: weak fob battery (replace first), damaged fob antenna, or issues with your car's receiver (often in the door handle or rearview mirror). Environmental interference from other electronics can also reduce range.
Key Tip: Keep spare keys in a faraday bag to prevent signal amplification theft
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 Fact: Some insurance policies offer key replacement coverage

🔑 KEY SERVICES CLASSIFIEDS

Lost Car Key Replacement
$120+
Posted: Apr 26, 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: 408-462-9819
Immobilizer System Reset
$95+
Posted: Apr 27, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 944-882-7153
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: 466-760-4193
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: 280-769-8557
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 15, 2026

Smart Key Programming Class

by The Key Lab
In-depth class covering push-to-start systems and proximity key programming techniques
Workshop
May 12, 2026

Car Security Certification Course

by Auto Key Masters
In-depth class covering push-to-start systems and proximity key programming techniques
Workshop
May 26, 2026

Car Security Certification Course

by The Key Lab
Hands-on experience with the newest transponder key cloning and programming equipment
Seminar
May 27, 2026

Immobilizer System Seminar

by Auto Key Masters
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