[Status: Resolved] Where is the transponder code located in a 2021 MAZDA CX 3?

1623 views - Last reply: March 05, 2025
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Where do I get the key code for my 2021 MAZDA CX 3 to make a spare key?

Hello! We've developed a VIN-based tool to help you get your key code for the 2021 MAZDA CX 3. Check it out here: VIN Key Code Generator.

Replies (4)

Can confirm it worked for my 2013 2021 MAZDA CX 3.

Just checking in to say this helped with my 2021 MAZDA CX 3. Thanks!

Was about to tow my 2021 MAZDA CX 3. Let me try this first.

Trying to avoid a $300 fee at the dealer for my 2021 MAZDA CX 3.

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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.
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Lost Keys
Dealerships can often cut keys using your VIN, but will require proof of ownership. This only works for original factory keys - aftermarket or previously replaced locks won't match. The key will still need programming to start the car if it has a transponder.
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