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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 586 (SECURITY SYSTEM AND LOCKS SYSTEM)IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY SYSTEM]NO.5 RESETTING PROCEDURE FOR THE IMMOBILIZER SYSTEM WHEN REPLACING THE PCM OR INSTRUMENT CLUSTER CONDITIONSPROCEDURE
2010 Mazda 5 Sport, 2.3 L, Standard

No.5 Resetting Procedure for the Immobilizer System when Replacing the PCM or Instrument Cluster Conditions: Procedure

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Procedure
WARNING: This page is about a different car, the 2008 Mazda 5. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Resetting Procedure For Immobilizer System
G05543514Courtesy of MAZDA MOTORS CORP.
  1. Have two or more keys (key 1, key 2) ready for registration.
  2. Using key 1, turn the ignition switch to the ON position.
    NOTE:
    • When replacing only the PCM: The security light illuminates for 3 s and then goes out.
    • When replacing the instrument cluster: 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. After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
    • When using the IDS (laptop PC)
      1. Select the "Body".
      2. Select the "Security".
      3. Select the "PATS Functions".
    • When using the PDS (Pocket PC)
      1. Select the "Programming".
      2. Select the "PATS Functions".
  5. Select "Ignition Key Code Erase" from the M-MDS screen menu and perform the procedure according to the M-MDS screen. (When replacing the instrument cluster)
    Fig 2: Identifying DLC-2 Connector
    G05543510Courtesy of MAZDA MOTORS CORP.
  6. Perform security access as indicated on the M-MDS screen. (See NO.6 SECURITY ACCESS PROCEDURE .)
  7. Select "Parameter Reset" from the M-MDS screen menu.
  8. Select the replaced part as indicated on the M-MDS screen.
    • When replacing only the PCM: Select "PCM".
    • When replacing only the instrument cluster: Select "IC".
    NOTE:
    • At this time, do not select any other parts from the M-MDS screen menu.
  9. After verifying that the PATS function menu is displayed again on the M-MDS screen, select "Exit" to complete the M-MDS function.
  10. After Step  9, wait 10 s or more and turn the ignition switch to the LOCK position using key 1.
  11. Using key 1, turn the ignition switch to the ON position.
    NOTE:
    • When replacing only the PCM: The security light illuminates for 3 s and then goes out.
    • When replacing only the instrument cluster: Although the security light flashes and DTC 21 is displayed, this does not indicate an improper procedure. Continue to perform the procedure as indicated.
  12. Perform the following procedures:
    • When replacing only the PCM: After verifying that the security light goes out, turn the ignition switch to the LOCK position. (Procedure completed)
    • When replacing only the instrument cluster: After verifying that the security light illuminates for 3 s or more,  turn the ignition switch to the LOCK position, remove key 1, and then go to the next step.
  13. Using key 2, turn the ignition switch to the ON position.
  14. Verify that the security light illuminates for approx. 3 s  and then goes out.
  15. After verifying that the security light goes out, turn the ignition switch to the LOCK position using key 2, and then remove key 2.
  16. If an additional key needs to be registered, repeat Steps  13- 15 in the same manner as key 2. Steps  13- 15 must be performed within 1 min  for each key. If the ignition switch is maintained in the ON position for 1 min or more,  key registration according to Steps  13- 15 will not be possible. If this occurs, refer to " NO.1 ADDITIONAL KEY REGISTRATION PROCEDURE (USING TWO VALID KEYS) " to register any additional keys.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.