Mazda CX 7. Manual — part 396

SECURITY AND LOCKS

09-14–19

09-14

20. Verify that the security light and keyless warning light operate as follows:

• From the point when the ignition switch is turned to the ON position, the security light illuminates for

approx. 3 s, and goes out.

• The keyless warning light illuminates when the ignition switch is turned to the ON position, and the light

goes out after approx. 1 s, and then displays the number of the programmed keys.

21. After verifying that the keyless warning light goes out, turn the ignition switch to the LOCK position using key 1,

and then remove the key.

22. Repeat Steps 20—21 using key 2 instead of key 1.

Note

• Perform Steps 20—21 as well when three or more keys are to be programmed.

23. Start the engine using the card key.

Caution

• Remove any key from the key cylinder.

24. Verify that the security light and keyless warning light operate as follows:

• From the point that ignition switch is turned to the ON position, the security light illuminates for approx. 3 s,

and goes out.

• The keyless warning light illuminate when the ignition switch is turned to the ON position for approx. 1 min,

and goes out.

25. After verifying that the keyless warning light goes out, turn the ignition switch to the LOCK position.

End Of Sie

IGNITION
SWITCH

ENGINE

SECURITY
LIGHT

KEYLESS
WARNING
LIGHT

ON

OFF

RUN

STOP

ON

OFF

ON

OFF

approx. 3 s

approx. 1 s

NUMBER OF VALID KEY

NUMBER
OF VALID
KEY

DISPLAY

1

2

3

EXAMPLE

a

b

a

b

a

b

a : approx. 0.3 s
b : approx. 0.9 s

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SECURITY AND LOCKS

09-14–20

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

id0914008050b3

Foreword

• When performing the following procedures, the immobilizer resetting procedure using the M-MDS must also

always be performed: “instrument cluster replacement”, “PCM replacement”, “instrument cluster and PCM joint
replacement”, “Key ID number clearing”. The engine will not start unless all work is performed using the M-
MDS.

• There are two methods for registering an additional key: Using the M-MDS and using two keys that are able to

start the engine.

• When replacing any of the immobilizer system component parts, adding/erasing keys or performing other

functions, refer to the following table and perform the applicable procedure (No.1 to 5).

Reference

number

Situation

Required items

Cautionary notes

1

Making a spare key when the
customer has two or more keys
that can start the engine. Or
registering an additional key.

• Registration key

• If the additional key registration method has

been changed to “Customer spare key
programming disabled” (inhibiting the method
that uses two keys that are able to start the
engine), the M-MDS is required when
registering the additional key. In that case,
perform procedure No.2.

2

Making a spare key when the
customer has one key that can
start the engine or no keys. Or
registering an additional key.

• Registration key

• M-MDS

-

3

Clearing previously registered key
ID numbers.

• Registration keys

(two or more)

• M-MDS

• All the key ID numbers registered in the vehicle

will be 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

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.

3

Replace all the keys. (Key cylinder
replacement)

• Registration keys

(two or more)

• M-MDS

• When replacing the key cylinder, have two or

more keys ready for registration before
beginning the procedure, since the previous
keys will be invalid.

4

Changing the method for
registering additional keys.
(Method for registering other keys
using two keys that can start the
engine is disabled.)

• M-MDS

• After performing this procedure it is not possible

to register additional keys according to
procedure No.1. The system can be returned to
the original setting. The M-MDS must always be
used to change the system setting.

4

Changing the method for
registering additional keys.
(Method for registering other keys
using two keys that can start the
engine is enabled.)

• M-MDS

• This is the default setting on new vehicles.

5

Replacing the instrument cluster.

• Replacement

instrument cluster

• Registration keys

(two or more)

• M-MDS

• Unless keys are registered after replacing the

steering lock, 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.

5

Replacing the PCM.

• Replacement PCM

• M-MDS

-

SECURITY AND LOCKS

09-14–21

09-14

Caution

• If any of the following items are touching or near the key head, signal communication between the

key and vehicle is negatively affected, resulting in the engine not starting or the key registration
failure. Do not perform the procedure if any of the following items are touching or near the key
head.

— Any metallic object

— Spare keys or keys for other vehicles equipped with an immobilizer system

— Any electronic device, or any credit or

other cards with magnetic strips

Note

• Within the following procedures, the term a

“valid key” means a “key that can start the
engine”.

• After adding/registering keys, clearing ID

numbers or replacing any component part of
the immobilizer system, verify that all keys
can start the engine within 5 s.

• When verifying that the keys can start the

engine, wait at least 5 s or more between
inserting them.

• If the engine cannot be started using a

registered key, repeat the procedure from
the beginning.

• Do not start the engine until the key

registration procedure for all the necessary
keys is completed. If the engine is started
during the registration procedure, registration is stopped at that point. Repeat the procedure starting from
the beginning if the engine is started before completion.

• Two or more key ID numbers must be registered for the engine to start.

• A maximum of eight key ID numbers can be registered for one vehicle. The M-MDS can be used to verify

the number of key ID numbers registered to a single vehicle.

• Do not select screen menus of the M-MDS that are not indicated within the procedures.

5

Replacing the PCM and
instrument cluster.

• Replacement PCM

• Replacement

instrument cluster

• Registration keys

(two or more)

• M-MDS

• Unless keys are registered after replacing the

steering lock, 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 antenna.

• New coil antenna

• It is not necessary to reset the immobilizer

system.

Reference

number

Situation

Required items

Cautionary notes

METAL RING LYING ON KEY HEAD

METAL PART OF ANOTHER
KEY TOUCHING KEY HEAD

KEY IS NEAR OR TOUCHING
ANOTHER IMMOBILIZER SYSTEM KEY

EXAMPLES:

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SECURITY AND LOCKS

09-14–22

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

• Customer has two or more valid keys.

Note

• A maximum of eight keys can be registered for any one vehicle. If key registration is not successful and

DTC 15 appears even though the procedure was performed properly, use the PID/data monitor function of
the M-MDS and verify the number of keys that have been registered.

• If eight keys have already been registered, and it is necessary to register other keys, the previously

registered key ID numbers must first be cleared. To clear the key ID numbers, refer to “09-14-23 No.3 Key
Replacement Procedure (Clearing Previously Registered Key ID Numbers, Key Re-registration)”.

Procedure

1. Have one key (key 3) ready for registration.
2. Using key 1, turn the ignition switch to the ON position.
3. Verify that the security light illuminates for approx. 3 s and then goes out.
4. Using key 1, turn the ignition switch to the LOCK position within approx. 4 s after the security light goes out.
5. Remove key 1
6. Repeat Steps 2— 5 using key 2.
7. Repeat Steps 2— 5 using key 3.
8. If additional keys need to be registered, repeat Steps 1— 7 in the same manner as key 3.

No.2 Additional Key Registration Procedure (Using the M-MDS)
Conditions

• Customer has only one valid key. Or customer has no valid keys. (Can also be performed even if there are two

or more valid keys)

Note

• A maximum of eight keys can be registered for any one vehicle. If key registration is not successful and

DTC 15 appears even though the procedure was performed properly, use the PID/data monitor function of
the M-MDS and verify the number of keys that have been registered.

• If eight keys have already been registered, and it is necessary to register other keys, the previously

registered key ID numbers must first be cleared. To clear the key ID numbers, refer to “09-14-23 No.3 Key
Replacement Procedure (Clearing Previously Registered Key ID Numbers, Key Re-registration)”.

Procedure

1. Have one key (key 1) ready for registration.
2. Using key 1, turn the ignition switch to the ON position.

Note

• Although the security light flashes and DTC 15 is displayed, this does not indicate an improper procedure.

Continue to perform the procedure as indicated.

3. Connect the M-MDS to the DLC-2.
4. Select “Body/Security/PATS function” from the M-MDS screen menu.
5. Perform security access as indicated on the M-MDS screen. (See 09-14-24 No.6 Security Access Procedure.)
6. Select “Program Additional Ignition Key” from the M-MDS screen menu.

VALID KEY

KEY FOR REGISTRATION

KEY 1

KEY 3

KEY 2

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