Programming Instructions for 2021 Mazda CX-5 Smart Key Remote Fob

Important Notice: The 2021 Mazda CX-5 does not support on-board programming for smart key remote fobs. Smart key registration requires a professional technician equipped with manufacturer-grade diagnostic tools to access the vehicle’s immobilizer and keyless entry system.

Programming Procedure:

• Step 1: Confirm that the new smart key fob is specifically compatible with the 2021 Mazda CX-5 and is not currently programmed to another vehicle.
• Step 2: Gather all current smart keys. In many cases, existing keys must be reprogrammed along with the new one to remain active.
• Step 3: Arrange service with a certified technician or an automotive facility that specializes in electronic key programming.
• Step 4: If your vehicle is operable, driving it to the service location may help reduce fees associated with mobile service calls.
• Step 5: Have documentation ready to prove ownership of the vehicle, such as the vehicle registration and a valid photo ID.
• Step 6: The technician will connect a diagnostic tool to the vehicle’s onboard diagnostic port to access the smart key programming interface.
• Step 7: The system will be used to register the new key fob, and if necessary, reprogram or remove existing remotes.
• Step 8: Once the process is complete, the technician will test all remote functions—lock/unlock, proximity entry, and push-button start—to ensure the smart key operates correctly.
• Step 9: Ask the technician to confirm the number of smart keys currently registered to the vehicle for security and tracking purposes.
• Step 10: Keep extra remotes stored in a secure location, and test them periodically to confirm they remain in working order.