[Method] Key code help for HARLEY DAVIDSON FAT BOY SPECIAL with flip key

1651 views - Last reply: May 07, 2025
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Looking for my HARLEY DAVIDSON FAT BOY SPECIAL's key code to program a new key

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

Replies (3)

Thanks for sharing! Been looking for a key code fix for my HARLEY DAVIDSON FAT BOY SPECIAL.

Just tried this on my HARLEY DAVIDSON FAT BOY SPECIAL—anyone else have success?

Great info! Needed this for my old HARLEY DAVIDSON FAT BOY SPECIAL.

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You can buy fobs online, but: 1) Must match your exact model/year 2) Many still require professional programming 3) Cheap knockoffs may not work reliably. Some eBay/Amazon sellers offer programming instructions for DIY-friendly models.
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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 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 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: Always have at least two working keys to avoid expensive replacements
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.
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