[Status: Resolved] Thumpstar MX 85 not accepting cloned key - code problem?

3422 views - Last reply: April 08, 2025
This topic is closed for new replies.

How to get the factory key code for my Thumpstar MX 85 to make keys?

Hello! We've developed a VIN-based tool to help you get your key code for the Thumpstar MX 85. Check it out here: VIN Key Code Generator.

Replies (4)

My Thumpstar MX 85's key code has been a nightmare. Trying this now.

Waiting to see if this will work on my Thumpstar MX 85 as well.

Using this on my Thumpstar MX 85 now. Hope it works.

This forum is more helpful than my dealer. Thanks from a Thumpstar MX 85 owner.

Check the news !

JDM Enthusiasts Meet
🚗 Local Meetup: JDM Enthusiasts Meet
A gathering for true gearheads and petrolheads

📍 Where: Waterfront Drive
📅 When: May 28 @ 10AM-7PM

Event features:
Poker Run | Scavenger Hunt

🔧 Forum Members: Let us know if you're bringing your project car! 👋

🧰 Paint & Bodywork Techniques

👨‍🏫 Instructors:
• Electronics Expert Priya Patel
• Restoration Pro Alex Petrov

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

📅 Skills Covered:
Metal finishing | Bondo application | Rust treatment

🚙 May 16, 2026 at 9:00 AM (6-hour)

✨ Tools and materials provided - just bring your enthusiasm!

Workshop: Paint & Bodywork Techniques
ECU Remapping Masterclass

🔋 ECU Remapping Masterclass

🧰 Instructor: Data Acquisition Expert Priya Patel

📱 Workshop Includes:
• Boost control mapping exercises
• 4-hour intensive hands-on training
• Fuel system upgrades | Injector sizing | Pump flow

📉 Bonus: Custom tune file included

🔌 Next Session: May 11, 2026 at 10:00 AM

Customize Your Tuning Focus:

🚀 Performance Mod Cost Estimator

Insight: Suspension mods should match your intended use (street vs track)

Vehicle Information

Modification Information

Additional Options

🔑 Car Key & Fob FAQ

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

Cost & Options
Quality aftermarket keys work well for most vehicles at lower cost. However, some luxury brands use proprietary technology only available through dealers. For expensive cars, OEM may be worth the extra cost for reliability.
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: Keep spare keys in a faraday bag to prevent signal amplification theft
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
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.
Lost Keys
Locksmiths or dealers can: 1) Decode your door or ignition lock to determine key cuts 2) Access your car's key code through manufacturer databases (with proof of ownership) 3) Program new transponder keys using diagnostic equipment.
Key Tip: Always have at least two working keys to avoid expensive replacements
Key Fact: Some luxury car keys can cost $800+ to replace at dealerships

🔑 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: 637-848-8618
Immobilizer System Reset
$95+
Posted: Apr 23, 2026
Fix "key not detected" errors and immobilizer issues. Dealer-level diagnostic equipment. Can often repair without replacing entire system. Free estimates.
Call: 636-315-5039
Car Key Extraction Service
$45+
Posted: Apr 24, 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: 969-310-8322
Vintage Car Key Restoration
$55+
Posted: Apr 21, 2026
Specializing in classic car keys (pre-1990). Can reproduce hard-to-find keys for antique vehicles. Museum-quality work for collector cars.
Call: 334-751-5471
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Workshop
May 21, 2026

Key Fob Repair Training

by VIN Decoder Pros
Hands-on training for programming transponder keys, smart keys, and fobs using professional tools
Workshop
May 15, 2026

Transponder Key Tech Day

by Car Key Solutions
In-depth class covering push-to-start systems and proximity key programming techniques
Seminar
May 19, 2026

Anti-Theft System Demonstration

by Fob Fixers
Step-by-step instruction for repairing common key fob issues including button and circuit problems
Seminar
May 27, 2026

Mobile Key Programming Clinic

by Auto Key Masters
Become certified in vehicle security systems with our intensive 2-day course

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