No. 1 Additional Key Programming Procedure (Using Two Valid Keys): Conditions

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

Have two or more valid keys.

NOTE:

If a key ID number cannot be programmed and DTC 15 is displayed, the maximum number of programmed keys may have been reached. Verify the number of programmed keys using the M-MDS.
If eight keys have already been programmed and it is necessary to program other keys, the previously programmed key ID numbers must first be cleared.
If "Customer spare key programming disable" is selected, perform additional key programming using the M-MDS (See NO. 2 ADDITIONAL KEY PROGRAMMING PROCEDURE (USING THE M-MDS) .)