[Confirmed Fix] Do I need tech2 or just the PIN to code UD Big Thumb key?

4064 views - Last reply: February 12, 2025
This topic is closed for new replies.
Bluescreen
Member since February 2022 • 51 posts

How can I retrieve my UD Big Thumb's key code to make a spare key?

Posted on February 12, 2025
Adminbot
Staff Member • 1804 posts

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

Posted on February 13, 2025

Replies (4)

Darkangel
Member • 87 posts

If this works for my UD Big Thumb, I owe you big time.

February 13, 2025 Reply
Easymoney
Member • 115 posts

Really hoping this unlocks my UD Big Thumb's mystery code.

February 14, 2025 Reply
Wizardoz
Member • 143 posts

Wish I found this thread before towing my UD Big Thumb.

February 15, 2025 Reply
Yellowbird
Member • 46 posts

Following along—same issue with my UD Big Thumb.

February 16, 2025 Reply

Check the news !

Lowrider Spectacular
🚙 Local Meetup: Lowrider Spectacular
Where car culture comes alive in your community

🏁 Where: Waterfront Drive
📆 When: August 23 @ 10AM-6PM

Event features:
Photoshoot Area | Ride-Alongs

⚙️ Forum Members: Special section just for forum members! ✨

🔩 Classic Car Restoration Workshop

👩‍🏭 Instructors:
• Race Engineer Emily Torres
• 4x4 Builder Mark Jensen

⚙️ Hands-On Activities:
• Panel beating and dent repair
• 4-hour intensive training
• Personal coaching

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

🏎️ August 12, 2026 at 10:00 AM (4-hour)

💡 Special discounts on tools for participants!

Workshop: Classic Car Restoration Workshop
Street to Strip Tuning Workshop

🔋 Street to Strip Tuning Workshop

🧰 Instructor: Engine Builder Mike O'Connor (1000+ HP builds)

📱 Workshop Includes:
• Emission-legal power gains
• 6-hour comprehensive hands-on training
• Turbo sizing | Intercooling | Wastegate control

📉 Bonus: 20% discount on performance parts

🔌 Next Session: August 7, 2026 at 2:00 PM

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

Key Fob Issues
Many cars have a resync procedure: 1) Press lock/unlock buttons while near the car 2) Insert key and turn ignition on/off in a specific pattern 3) Use a sequence of button presses. Check your manual for exact steps - procedures vary widely by manufacturer.
Key Tip: Store your key code separately from your keys
Security Systems
An anti-theft system that prevents the engine from starting unless it detects the correct transponder chip in the key. The chip sends a unique code to the car's computer when you turn the ignition. No match = no start, even with a physically matching key.
Key Tip: Always have at least two working keys to avoid expensive replacements
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.
Cost & Options
Locksmiths are typically 30-50% cheaper than dealerships for key replacement and programming. However, some newer models (especially luxury brands) may require dealer-only programming tools. Always get quotes from both.
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.
Key Tip: Always have at least two working keys to avoid expensive replacements
Key Fact: Many cars can store up to 8 different key codes in memory

🔑 KEY SERVICES CLASSIFIEDS

Key Fob Repair & Battery Replacement
$25+
Posted: Jul 25, 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: 988-990-9824
Anti-Theft System Repair
$85+
Posted: Jul 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: 345-693-7917
Key Fob Case Replacement
$35
Posted: Jul 16, 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: 395-206-6473
Dealer Alternative Key Service
40% Less
Posted: Jul 18, 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: 460-634-5076
Ads refreshed daily • Licensed professionals • Mobile services available

🔑 Upcoming Key & Immobilizer Services

Seminar
Aug 17, 2026

Smart Key Programming Class

by VIN Decoder Pros
Hands-on experience with the newest transponder key cloning and programming equipment
Seminar
Aug 8, 2026

Dealer-Level Programming Workshop

by The Key Lab
In-depth class covering push-to-start systems and proximity key programming techniques
Seminar
Jul 27, 2026

VIN Decoding Workshop

by Auto Key Masters
Learn how to extract key codes from VIN numbers and decode vehicle security information
Workshop
Aug 14, 2026

Smart Key Programming Class

by Immobilizer Experts
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