[It Worked!] Key code help for 2018 Mercedes Benz S Class with chipped keys

783 views - Last reply: January 14, 2025
This topic is closed for new replies.

How can I retrieve my 2018 Mercedes Benz S Class's key code to make a spare key?

Hello! We've developed a VIN-based tool to help you get your key code for the 2018 Mercedes Benz S Class. Check it out here: VIN Key Code Generator.

Replies (4)

I’m not alone! My 2018 Mercedes Benz S Class is doing the same thing.

Anyone have luck with this on a 2015 2018 Mercedes Benz S Class?

Same issue here with my 2018 Mercedes Benz S Class, let me know if it works.

My 2018 Mercedes Benz S Class refuses to start. Could be the key code—trying this fix.

Check the news !

Annual Muscle Car Meetup
🚗 Local Meetup: Annual Muscle Car Meetup
Cruise-ins, burnouts, and good times

📍 Where: Fairgrounds Parking Lot
📅 When: May 19 @ 11AM-8PM

Event features:
Kids Activities | Charity Fundraiser

🔧 Forum Members: Post your ride in our event discussion thread! 👋

🔧 Brake System Masterclass

👨‍🔧 Instructors:
• Restoration Pro Alex Petrov
• Master Technician Carlos Rodriguez (20+ years experience)

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

📝 Skills Covered:
Gear patterns | Bearing preload | Locker installation

🚗 May 13, 2026 at 12:00 PM (4-hour)

🔥 Certificate of completion provided!

Workshop: Brake System Masterclass
Carburetor to EFI Conversion Clinic

🚀 Carburetor to EFI Conversion Clinic

⚙️ Instructor: Factory ECU Engineer Dr. Sophia Chen

📊 Workshop Includes:
• Real-world case studies
• 6-hour comprehensive hands-on training
• NVH reduction | Drivability tuning | Daily driver balance

🔩 Bonus: Entered into performance parts giveaway

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

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Pro Tip: Supporting mods (fuel system, cooling) are often needed for big power gains

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 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: Avoid exposing key fobs to water or extreme temperatures
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
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 Tip: Newer cars often require dealer programming for first key replacement
Lost Keys
Yes, a skilled auto locksmith can extract the broken key and make a replacement. They can often do this without damaging the ignition cylinder. The new key will need programming if it has a transponder chip.
Key Fact: Key fob batteries typically last 3-4 years with normal use

🔑 KEY SERVICES CLASSIFIEDS

Mobile Key Programming Service
$75+
Posted: Apr 20, 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: 868-365-6382
Lost Car Key Replacement
$120+
Posted: Apr 19, 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: 591-391-2393
Vintage Car Key Restoration
$55+
Posted: Apr 26, 2026
Specializing in classic car keys (pre-1990). Can reproduce hard-to-find keys for antique vehicles. Museum-quality work for collector cars.
Call: 940-445-6271
Key Fob Case Replacement
$35
Posted: Apr 29, 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: 427-662-2095
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
May 25, 2026

Smart Key Programming Class

by Car Key Solutions
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Workshop
May 22, 2026

Car Security Certification Course

by VIN Decoder Pros
Learn how to extract key codes from VIN numbers and decode vehicle security information
Seminar
May 7, 2026

Immobilizer System Seminar

by Mobile Key Tech
In-depth class covering push-to-start systems and proximity key programming techniques
Workshop
May 20, 2026

Key Fob Repair Training

by Mobile Key Tech
Learn dealer-level programming techniques normally only available at franchise shops

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