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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 424 (SECURITY SYSTEM AND LOCKS SYSTEM)CODE WORD INPUT PROCEDURECALIFORNIA EMISSION REGULATION APPLICABLE MODELS.
2011 Mazda 3 Mazdaspeed, 2.3 3

California Emission Regulation Applicable Models.

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION California Emission Regulation Applicable Models.
WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Wait for 5 minutes until security light flashes slowly. (300 ms  ON- 300 ms  OFF --> 1.2 s  ON- 1.2 s  OFF)
  2. Input the code word as shown in the example below.
    Fig 1: Security Light Blinking Pattern - 3 And 1 Pattern
    G03701263Courtesy of MAZDA MOTORS CORP.
    1. Turn ignition switch to ON position while security light is off and count three illumination cycles. As the light goes out after the third illumination, turn key to LOCK position.
    2. Wait at least one illumination cycle and within 30 seconds  of going to LOCK position, turn ignition switch to ON position while security light is off and count one illumination cycle. As the light goes out after the first illumination, turn key to LOCK position.
    3. Repeat Step  2 for rest of six digits.
  3. When code word is registered correctly in the PCM, the security light stops flashing and illuminates.
  4. As soon as the security light stops flashing and illuminates, the following immobilizer system reprogram procedure should be started.
    NOTE:

Examples of incorrect input of code word 

NOTE:
  • The security light must flash one or more times between the digits of the code word.
  • If the code word is input incorrectly, the security light goes out. Remove and insert key five times  and repeat the procedure to input all eight figures for the code word.
  • When an error occurs during the reprogram procedures except when both the immobilizer unit and PCM are replaced, repeat the procedure from Step 1. If you still cannot reprogram, confirm how many keys can start the engine. Then, perform the key replacement or addition reprogram procedure according to the valid key number.
  • The security light flashes ten or more times while the ignition switch is at ON position.
    Fig 2: Security Light Blinking Pattern - Ten Flashes
    G03701264Courtesy of MAZDA MOTORS CORP.
  • The ignition switch is turned to ON position and LOCK position while the security light is off.
    Fig 3: Security Light Blinking Pattern - Incorrect Flash
    G03701265Courtesy of MAZDA MOTORS CORP.
  • The ignition switch is turned to LOCK position and ON position while the security light is on.
    Fig 4: Security Light Blinking Pattern - Incorrect Pause (1 Of 2)
    G03701266Courtesy of MAZDA MOTORS CORP.
  • The ignition switch is turned to LOCK position and ON position while the security light is off.
    Fig 5: Security Light Blinking Pattern - Incorrect Pause (2 Of 2)
    G03701267Courtesy of MAZDA MOTORS CORP.
  • An unmatched code word is input to the immobilizer unit.
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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.