IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING OUTLINE[ADVANCED KEYLESS SYSTEM]

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•  When performing the following procedures, the immobilizer resetting procedure using the mazda modular diagnostic system (M-MDS) must also always be performed: “Keyless control module replacement”, “PCM replacement”, “Keyless control module and PCM joint replacement”, “Key ID number clearing”. The engine will not start unless all work is performed using the mazda modular diagnostic system (M-MDS).
•  When replacing any of the immobilizer system component parts, adding/erasing keys or performing other functions, refer to the following table. For repair procedures, refer to the Workshop Manual Section 09-14

Situation

Items neccesary to perform procedure (always have these ready before beginning the procedure)

Cautionary notes
Making a spare key when the customer has two or more keys that can start the engine. Or registering an additional key.
•  Keys for registration
•  If “Customer Spare Key Programming Disable” has previously been performed using the mazda modular diagnostic system (M-MDS), the mazda modular diagnostic system (M-MDS) must be used to register an additional key.
Making a spare key when the customer has one key that can start the engine or no keys. Or registering an additional key.
•  Keys for registration
•  mazda modular diagnostic system (M-MDS)
−
Clearing previously registered key ID numbers.
•  Keys for registration (two or more keys)
•  mazda modular diagnostic system (M-MDS)
•  All key ID numbers registered in the vehicle are cleared.
•  Unless keys are re-registered after clearing the key ID numbers, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the keys for the vehicle.
•  Unless two or more keys are registered after clearing the key ID numbers, the engine cannot be started.
•  The keys (two or more keys) readied before beginning the procedure do not have to be new keys. Any key that is capable of starting the engine before beginning the procedure can be used.
Replacing all keys. (When replacing the steering lock or similar procedure)
•  New keys (two or more keys)
•  mazda modular diagnostic system (M-MDS)
•  Since the steering lock is replaced, keys used before replacement become unusable. Have two new keys or more ready before beginning the procedure.
•  Unless keys are registered after replacing the steering lock, the engine cannot be started.
Changing the method for registering additional keys. (Method for registering other keys using two keys that can start the engine is disabled.)
•  mazda modular diagnostic system (M-MDS)
•  After performing this procedure, additional keys can only be registered using the mazda modular diagnostic system (M-MDS).
•  The setting can be changed to the original using the mazda modular diagnostic system (M-MDS).
Changing the method for registering additional keys. (Method for registering other keys using two keys that can start the engine is enabled.)
•  mazda modular diagnostic system (M-MDS)
•  This is the default setting on new vehicles.
Replacing the keyless control module only.
•  New keyless control module
•  Keys for registration (two or more keys)
•  mazda modular diagnostic system (M-MDS)
•  Unless keys are re-registered after replacement, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the keys for the vehicle.
•  Unless two or more keys are registered after replacement, the engine cannot be started.
•  The keys (two or more keys) readied before beginning the procedure do not have to be new keys. Any key that is capable of starting the engine before beginning the procedure can be used.
Replacing the PCM only.
•  New PCM
•  mazda modular diagnostic system (M-MDS)
-
Replacing the PCM and keyless control module.
•  New PCM
•  New keyless control module
•  Keys for registration (two or more keys)
•  mazda modular diagnostic system (M-MDS)
•  Unless keys are re-registered after replacement, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the keys for the vehicle.
•  Unless two or more keys are registered after replacement, the engine cannot be started.
•  The keys (two or more keys) readied before beginning the procedure do not have to be new keys. Any key that is capable of starting the engine before beginning the procedure can be used.
Replacing the coil.
•  New coil
•  It is not neccessary to reset the immobilizer system.
Replacing the instrument cluster.
•  New instrument cluster
•  It is not neccessary to reset the immobilizer system.