[It Worked!] Ford C Max won’t start after replacing key - what code do I need?

158 views - Last reply: May 10, 2025
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Where do I get the key code for my Ford C Max to make a spare key?

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

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Anyone have luck with this on a 2015 Ford C Max?

Bookmarking this for when I work on my Ford C Max this weekend.

My Ford C Max won’t start without that code. Following this closely.

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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.
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.
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Key Programming
Professional key programming requires: diagnostic tools to access the immobilizer system, key code software, transponder programmers, and often proprietary manufacturer equipment. Some locksmiths and all dealers have these tools.
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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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