Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 533 (SECURITY SYSTEM AND LOCKS SYSTEM)CODE WORD INPUT PROCEDURENOTES
2011 Mazda 3 Mazdaspeed, 2.3 3
Code Word Input Procedure: Notes
2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Notes
WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- A code word is composed of eight digits from 1-9 and is part of the immobilizer unit from the manufacturer. Each unit has its own code word. To obtain the code word, you need to have the immobilizer serial number, then ask the distributor.
- To input the code word into the PCM, turn the ignition key and count the number of flashes of the security light. The calculation of the number of flashes of the security light comes with the timing of the turning of the key.
- Wait for 5 minutes until security light flashes slowly. (300 ms ON-300 ms OFF --> 1.2 s ON-1.2 s OFF)
- Input the code word as shown in the example below.
- 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.
- 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.
- Repeat Step (2) for rest of six digits.
- When code word is registered correctly in the PCM, the security light stops flashing and illuminates.
- As soon as the security light stops flashing and illuminates, the following immobilizer system reprogram procedure should be started.NOTE:
- If the code word is not input correctly, the security light goes out after all eight digits are input. In this case, perform the CODE WORD INPUT ERROR RECOVERY PROCEDURE .
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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.