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

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Foreword

• The immobilizer resetting procedure using the M-MDS must also always be performed when performing the following procedure: “instrument cluster replacement”, “PCM replacement”, “instrument cluster and PCM joint replacement”, and “key ID number clearing”. The engine will not start unless all work is performed using the M-MDS.
• For adding a key, there are two ways, either using the M-MDS or using two keys with which the engine can be started.
• When replacing any of the immobilizer system component parts, adding/clearing keys, or performing other functions, refer to the following table and perform the applicable procedure (No.1 to 7).

Reference number | Situation | Required items | Cautionary notes
--- | --- | --- | ---
1 | Have two or more keys with which the engine can be started, and making a spare key, or programming an additional key. (See No.1 Additional Key Registration Procedure (Using Two Valid Keys).) | • Registration key | • The M-MDS is necessary for the additional key programming if “Customer Spare Key Programming Disable” is set before the procedure using the M-MDS. In this case, perform No. 2.
2 | If there is only one key that can start the engine, make a spare key. If there is no key, program an additional key. (See No.2 Additional Key Registration Procedure (Using the M-MDS).) | • Registration key • M-MDS | -
3 | Clearing the programmed key ID number. (See No.3 Key Replacement Procedure (Clearing Previously Programmed Key ID Numbers, Key Re-program).) | • Registration keys (Two or more) • M-MDS | • All the key ID numbers programmed to the vehicle will be cleared. • Unless keys are reprogrammed after the procedure, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the keys for the vehicle. • Two or more keys need to be programmed after the procedure to start the engine. • The keys (two or more) to prepare for the procedure do not have to be new ones; there is no problem with using the keys with which the engine can be started.
3 | Replace all the keys. (Steering lock replacement or similar procedure) (See No.3 Key Replacement Procedure (Clearing Previously Programmed Key ID Numbers, Key Re-program).) | • New keys (two or more) • M-MDS | • The previous keys will be invalid since the steering lock is replaced. Have two or more new keys ready for programming before beginning the procedure. • Unless keys are reprogrammed after the procedure, the engine cannot be started.
4 | Changing the additional key programming procedure. (Method for programming other keys using two keys that can start the engine is disabled.) (See No.4 Additional Key Programming Procedure Changing.) | • M-MDS | • The additional key programming using No. 1 cannot be performed after the procedure. It is possible to restore the setting. For restoring the setting, the M-MDS or equivalent is necessary.
4 | Changing the additional key programming procedure. (Allows programming using two keys that can start the engine.) (See No.4 Additional Key Programming Procedure Changing.) | • M-MDS | • New vehicles have this setting.
5 | Replacing the instrument cluster only. (See No.5 Resetting Procedure for the Immobilizer System when Replacing the Instrument Cluster.) | • New instrument cluster • Registration keys (two or more) • M-MDS | • Unless keys are reprogrammed after the procedure, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the keys for the vehicle. • Two or more keys need to be programmed after the procedure to start the engine. • The keys (two or more) to prepare for the procedure do not have to be new ones; there is no problem with using the keys with which the engine can be started.
6 | Replacing the PCM only. (See No.6 Resetting Procedure for the Immobilizer System when Replacing the PCM.) | • Replacement PCM • M-MDS | -
7 | Replacing the PCM and instrument cluster at the same time. (See Procedure.) | • New PCM • New instrument cluster • Registration keys (two or more) • M-MDS | • Unless keys are reprogrammed after the procedure, the engine cannot be started. Before beginning the procedure, verify that the customer has turned in all of the keys for the vehicle. • Two or more keys need to be programmed after the procedure to start the engine. • The keys (two or more) to prepare for the procedure do not have to be new ones; there is no problem with using the keys with which the engine can be started.
- | Replacing the coil antenna. | • New coil antenna | • Immobilizer system resetting is not necessary.

  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

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  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.

M-MDS Connecting Procedure

  Caution
  • Do not place the M-MDS in the vehicle while programming, otherwise programming cannot be performed.

1. Fully lower the door glass.

2. Connect the M-MDS to the DLC-2.

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3. Pull out the M-MDS cable from the door glass opening and set the M-MDS outside the vehicle.

  Caution
  • Protect the cable and body contact area with a clean rag, otherwise they could be damaged.

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

Conditions
• Have 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 “No.3 Key Replacement Procedure (Clearing Previously Programmed Key ID Numbers, Key Re-program)”.

Procedure

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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 OFF 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 2—5 in the same manner as key 4.

9. Verify that the all keys can start the engine for 5 s or more after the procedure.

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 “No.3 Key Replacement Procedure (Clearing Previously Programmed Key ID Numbers, Key Re-program)”.

Procedure

1. Have one key (key 1) ready for registration.

2. Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure.)

3. Using key 1, turn the ignition switch to the ON position.

  Note
  • Although the security light starts flashing and DTC 15 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

4. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.

  1. Select “Body”.
  2. Select “Security”.

5. Then, select items from the screen menu in the following order.

  1. Select “PATS Functions”.

6. Select “Program additional ignition key” from the M-MDS screen menu and perform the procedure according to the M-MDS screen

7. Perform the security access according to the directions on the M-MDS screen. (See SECURITY ACCESS PROCEDURE.)

  Note
  • After selecting the above menu, “This operation has been successful” is displayed. At this point, the key that turned the ignition switch to the ON position is completely programmed.
  • In this procedure, the necessary number of the keys are completely programmed. To finish the additional key programming, go to 11.
  • If additional keys need to be programmed, go to the next step.

8. After verifying that the PATS function menu is displayed again on the M-MDS screen, turn the ignition switch to the OFF position and remove key 1.

9. Using the additional key to be programmed, turn the ignition switch to the ON position.

10. Return to the Step 3.

11. After verifying that the PATS function menu is displayed again on the M-MDS screen, select the “Exit (From This Menu)” to finish the M-MDS procedure.

12. After Step 11, wait 5 s or more and then turn the ignition switch to the OFF position.

13. Disconnect the M-MDS from the DLC-2.

14. Verify that the all keys can start the engine for 5 s or more after the procedure.

No.3 Key Replacement Procedure (Clearing Previously Programmed Key ID Numbers, Key Re-program)

Conditions
• Have two or more keys to be programmed after the key ID number clearing.

Procedure

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1. Prepare two or more keys to be programmed after the key ID number is cleared.

2. Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure.)

3. Using key 1, turn the ignition switch to the ON position.

  Note
  • Although the security light starts flashing and DTC 15 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

4. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.

  1. Select “Body”.
  2. Select “Security”.

5. Then, select items from the screen menu in the following order.

  1. Select “PATS Functions”.

6. Select “Ignition Key Code Erase and Program” from the M-MDS screen menu and perform the procedure according to the M-MDS screen

7. Perform the security access according to the directions on the M-MDS screen. (See SECURITY ACCESS PROCEDURE.)

8. After verifying that the PATS function menu is displayed again on the M-MDS or equivalent screen, select “Exit (From This Menu)” to finish the M-MDS procedure.

9. After Step 8, wait 5 s or more and then turn the ignition switch to the OFF position using key 1.

10. Using key 1, turn the ignition switch to the ON position.

11. After verifying that the security light illuminates for 3 s or more, turn the ignition switch to the OFF position and remove key 1.

  Note
  • Although the security light remains illuminated and DTC 21 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

12. Using key 2, turn the ignition switch to the ON position.

13. Verify that the security light illuminates for approx. 3 s and then turns off.

14. After verifying that the security light turns off, turn the ignition switch to the OFF position and remove key 2.

15. If programming one more keys, repeat Steps 12 to 14 with a key to be programmed as key 3. Steps 12 to 14 must be performed within 1 min for each key. If the vehicle is left with the ignition switch in the ON position for 1 min or more, additional key programming according to Steps 12 to 14 is disabled. If this occurs, refer to”No.1 Additional Key Registration Procedure (Using Two Valid Keys)” to register any additional keys.

16. Verify that the all keys can start the engine for 5 s or more after the procedure.

No.4 Additional Key Programming Procedure Changing

  Note
  • This procedure is performed for enabling/disabling the “No.1 Additional Key Programming Procedure (Using Two Valid Keys)” setting.
  • The setting is “Enable” when the vehicle is new or the instrument cluster is replaced with a new one.
  • If “No. 1 Additional Key Programming Procedure (Using Two Valid Keys)” is set to disable, the additional key programming can be only performed using the M-MDS preventing the forging of a spare key by using two valid keys. This function is for use by rental car agencies or other companies with vehicle fleets.

Procedure

1. Using the key, turn the ignition switch to the ON position. (The key can be either the valid key or an unprogrammed key)

  Note
  • Although the security light starts flashing and DTC 15 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

2. Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure.)

3. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.

  1. Select “Body”.
  2. Select “Security”.

4. Then, select items from the screen menu in the following order.

  1. Select “PATS Functions”.

5. Select “Customer Spare Key Programming Enable” or “Customer Spare Key Programming Disable” from the M-MDS screen menu. Additional key programming procedure is as follows according to the selected menu:

Setting | Additional key registration method
--- | ---
Procedure using two valid keys | Procedure using the M-MDS
Customer spare key programming enable | x | x
Customer spare key programming disable | - | x

x :Procedure is possible
- :Procedure is not possible

6. Perform the security access according to the directions on the M-MDS screen. (See SECURITY ACCESS PROCEDURE.)

7. After verifying that the PATS function menu is displayed again on the M-MDS or equivalent screen, select “Exit (From This Menu)” to finish the M-MDS procedure.

8. After Step 7, wait 5 s or more and then turn the ignition switch to the OFF position.

9. Verify that the all keys can start the engine for 5 s or more after the procedure.

No.5 Resetting Procedure for the Immobilizer System when Replacing the Instrument Cluster

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

  Caution
  • Before starting Step 1, complete the procedure for the instrument cluster replacement. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

Procedure

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1. Prepare two or more keys to be programmed after the key ID number is cleared.

2. Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure.)

3. Using the key 1, turn the ignition switch to the ON position.

  Note
  • Although the security light starts flashing and DTC 15 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

4. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.

  1. Select “Body”.
  2. Select “Security”.

5. Then, select items from the screen menu in the following order.

  1. Select “PATS Functions”.

6. Select “Ignition Key Code Erase and Program” from the M-MDS screen menu and perform the procedure according to the M-MDS screen.

7. Perform the security access according to the directions on the M-MDS screen. (See SECURITY ACCESS PROCEDURE.)

8. Select “Parameter Reset” from the M-MDS screen menu.

9. Select the replaced parts according to the directions on the M-MDS.

  • If the instrument cluster is replaced: Select “IC”.

  Note
  • At this time, do not select the other parts from the M-MDS menu.

10. After verifying that the PATS function menu is displayed again on the M-MDS screen, select “Exit (From This Menu)” to finish the M-MDS procedure.

11. After Step 10, wait 5 s or more and then turn the ignition switch to the OFF position.

12. Disconnect the M-MDS from the DLC-2.

13. Using key 1, turn the ignition switch to the ON position.

  Note
  • Although the security light remains illuminated and DTC 21 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

14. After verifying that the security light illuminates for 3 s or more, turn the ignition switch to the OFF position, remove key 1, and go to the next step.

15. Using key 2, turn the ignition switch to the ON position.

16. Verify that the security light illuminates for approx. 3 s and then turns off.

17. After verifying that the security light turns off, turn the ignition switch to the OFF position and remove key 2.

18. If programming one more keys, repeat Steps 15 to 17 with a key to be programmed as key 3. Steps 15 to 17 must be performed within 1 min for each key. If the vehicle is left with the ignition switch in the ON position for 1 min or more, additional key programming according to Steps 15 to 17 is disabled. If this occurs, refer to “No.1 Additional Key Registration Procedure (Using Two Valid Keys)” to register any additional keys.

19. Verify that the all keys can start the engine for 5 s or more after the procedure.

No.6 Resetting Procedure for the Immobilizer System when Replacing the PCM

  Caution
  • Before starting Step 1, complete the procedure for the PCM replacement. (See PCM REMOVAL/INSTALLATION [MZI-3.7].)

Procedure

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1. Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure.)

2. Using the key 1, turn the ignition switch to the ON position.

  Note
  • Although the security light remains illuminated and DTC 23 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

3. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.

  1. Select “Body”.
  2. Select “Security”.

4. Then, select items from the screen menu in the following order.

  1. Select “PATS Functions”.

5. Select “Parameter Reset” from the M-MDS screen menu and perform the procedure according to the M-MDS screen

6. Perform the security access according to the directions on the M-MDS screen. (See SECURITY ACCESS PROCEDURE.)

7. Select the replaced parts according to the directions on the M-MDS.

  • If the PCM is replaced: Select “PCM”.

  Note
  • At this time, do not select the other parts from the M-MDS menu.

8. After verifying that the PATS function menu is displayed again on the M-MDS screen, select “Exit (From This Menu)” to finish the M-MDS procedure.

9. After Step 8, wait 5 s or more and then turn the ignition switch to the OFF position.

10. Disconnect the M-MDS from the DLC-2.

11. Using key 1, turn the ignition switch to the ON position.

12. Verify that the security light illuminates for approx. 3 s and then turns off.

13. After verifying that the security light turns off, turn the ignition switch to the OFF position.

14. Verify that the all keys can start the engine for 5 s or more after the procedure.

No.7 Resetting Procedure for the Immobilizer System when Replacing the PCM and Instrument Cluster at the Same Time

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

  Caution
  • Before starting Step 1, complete the procedure for the PCM and instrument cluster replacement. (See PCM REMOVAL/INSTALLATION [MZI-3.7].) (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

Procedure

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1. Prepare two or more keys to be programmed after the key ID number is cleared.

2. Connect the M-MDS to the DLC-2. (See M-MDS Connecting Procedure.)

3. Using the key 1, turn the ignition switch to the ON position.

  Note
  • Although the security light flashes and DTC 15 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

4. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.

  1. Select “Body”.
  2. Select “Security”.

5. Then, select items from the screen menu in the following order.

  1. Select “PATS Functions”.

6. Select “Ignition Key Code Erase and Program” from the M-MDS screen menu and perform the procedure according to the M-MDS screen

7. Perform the security access according to the directions on the M-MDS screen. (See SECURITY ACCESS PROCEDURE.)

8. Select “Parameter Reset” from the M-MDS screen menu.

9. Select the replaced parts according to the directions on the M-MDS.

  (1) If the instrument cluster is replaced: Select “IC”.

  (2) If the PCM is replaced: Select “PCM”.
    Note
    • At this time, do not select the other parts from the M-MDS menu.

10. After verifying that the PATS function menu is displayed again on the M-MDS screen, select “Exit (From This Menu)” to finish the M-MDS procedure.

11. After Step 10, wait 5 s or more and then turn the ignition switch to the OFF position.

12. Disconnect the M-MDS from the DLC-2.

13. Using key 1, turn the ignition switch to the ON position.

  Note
  • Although the security light remains illuminated and DTC 21 is displayed after approx. 1 min, this does not indicate an improper procedure. Continue to perform the procedure as indicated.

14. After verifying that the security light illuminates for 3 s or more, turn the ignition switch to the OFF position, remove key 1, and go to the next step.

15. Using key 2, turn the ignition switch to the ON position.

16. Verify that the security light illuminates for approx. 3 s and then turns off.

17. After verifying that the security light turns off, turn the ignition switch to the OFF position and remove key 2.

18. If programming one more keys, repeat Steps 15 to 17 with a key to be programmed as key 3. Steps 15 to 17 must be performed within 1 min for each key. If the vehicle is left with the ignition switch in the ON position for 1 min or more, additional key programming according to Steps 15 to 17 is disabled. If this occurs, refer to “No.1 Additional Key Registration Procedure (Using Two Valid Keys)” to register any additional keys.

19. Verify that the all keys can start the engine for 5 s or more after the procedure.