No. 7 Programming Procedure Due to Simultaneous Replacement of Immobilizer System-related Parts (PCM, Keyless Control Module, and Steering Lock Unit): Notes

WARNING: This page is about a different car, the 2011 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

The engine cannot be started if any step or procedure is skipped. Perform all procedures in the order of the steps.
The menu and execution sequence of the M-MDS vary depending on the type of replaced unit and parts. Perform the procedures referring to the following table.

M-MDS menu

(1): Parameter Reset
(2): Ignition Key Code Erase and Program
(3): Program Additional card key
(4): Steering Lock Unit Programming

KEY PROGRAMMING PROCEDURE

Replacement part

M-MDS execution menu/sequence

Conditions

Keyless control module and PCM

(1)→(2)→(3)→(4)

Have two or more keys to be programmed after the replacement.
Have one or more card keys to be programmed after the replacement.

Keyless control module and steering lock unit⁽¹⁾

Keyless control module, PCM, and steering lock unit⁽¹⁾

PCM and steering lock unit⁽¹⁾

(1)→(2)→(4)

Have two or more keys to be programmed after the replacement.

⁽¹⁾	Because the steering lock unit is integrated with the ignition key cylinder, the key must also be replaced when replacing the steering lock unit.