[Answered] How to extract transponder code from my Yamaha XS 400 US Custom ECU?

1623 views - Last reply: May 17, 2025
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Where do I find the key code to program keys for my Yamaha XS 400 US Custom?

Hello! We've developed a VIN-based tool to help you get your key code for the Yamaha XS 400 US Custom. Check it out here: VIN Key Code Generator.

Replies (3)

Can’t believe this worked on my Yamaha XS 400 US Custom. Huge thanks!

Just what I needed! My Yamaha XS 400 US Custom has been acting up lately.

Exactly what I was looking for to fix my Yamaha XS 400 US Custom.

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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).
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