[Confirmed] Can't program new key without code for Demak MV 135

4483 views - Last reply: February 03, 2025
This topic is closed for new replies.

How to obtain the key code to make keys for my Demak MV 135?

Hello! We've developed a VIN-based tool to help you get your key code for the Demak MV 135. Check it out here: VIN Key Code Generator.

Replies (4)

Appreciate any advice—my Demak MV 135 won’t recognize the key.

Will this work for older Demak MV 135s? Mine's a 2009.

Just wanted to say this guide helped with my Demak MV 135!

I’m not alone! My Demak MV 135 is doing the same thing.

Check the news !

Import Car Festival
🚗 Local Meetup: Import Car Festival
The local meetup for serious enthusiasts

📍 Where: City Park Pavilion
📅 When: May 21 @ 10AM-6PM

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

🔧 Forum Members: Don't forget to tag your photos #OurForumName 👋

🔧 Detailing Like a Pro

👨‍🔧 Instructors:
• Custom Fabricator Mike 'Wrench' O'Connor
• Paint Specialist Sarah Chen

🛠️ Hands-On Activities:
• Paint correction demonstrations
• 4-hour intensive training
• Personal coaching

📝 Skills Covered:
Harness installation | Fire suppression | Weight balance

🚗 May 14, 2026 at 1:00 PM (4-hour)

🔥 Limited to 15 participants - reserve your spot now!

Workshop: Detailing Like a Pro
Race Car Setup Seminar

🚀 Race Car Setup Seminar

⚙️ Instructor: Dyno Operator of the Year Dave Wilson

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

🔩 Bonus: Exclusive tuner network discounts

🏎️ Next Session: May 11, 2026 at 4:00 PM

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

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
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).
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: Some locksmiths offer mobile key programming services
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.
Security Systems
A flashing security light often indicates an immobilizer issue. Solid light suggests the system is armed but not recognizing your key. Causes: faulty key chip, damaged antenna ring, low battery, or system needs reprogramming.
Key Tip: Replace key fob batteries every 1-2 years as preventative maintenance
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 26, 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: 926-573-0030
Lost Car Key Replacement
$120+
Posted: Apr 20, 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: 294-655-9016
Anti-Theft System Repair
$85+
Posted: Apr 19, 2026
Fixing security light issues, PATS systems, and ignition immobilizers. Proper diagnosis before repair. Most vehicles serviced same day. Warranty on all work.
Call: 592-895-9348
Dealer Alternative Key Service
40% Less
Posted: Apr 25, 2026
Same quality as dealership without the markup. We have the same programming tools but charge significantly less. All major European, Asian, and domestic brands.
Call: 213-912-8134
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
May 6, 2026

Mobile Key Programming Clinic

by Mobile Key Tech
Live demonstration of the latest anti-theft technologies and bypass prevention methods
Workshop
May 16, 2026

VIN Decoding Workshop

by Auto Key Masters
Hands-on training for programming transponder keys, smart keys, and fobs using professional tools
Seminar
May 11, 2026

Lost Key Solution Roadshow

by Mobile Key Tech
Solutions for when all keys are lost - from code pulling to immobilizer resets
Workshop
May 20, 2026

Dealer-Level Programming Workshop

by The Key Lab
Hands-on experience with the newest transponder key cloning and programming equipment

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