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 MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 581 (SECURITY SYSTEM AND LOCKS SYSTEM)IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [WITH ADVANCED KEYLESS SYSTEM]NO. 5 RESETTING PROCEDURE FOR THE IMMOBILIZER SYSTEM WHEN REPLACING THE PCM, KEYLESS CONTROL MODULE, OR STEERING LOCK UNITCONDITION
2008 Mazda 6 s Sport, 4D Hatchback, Standard
No. 5 Resetting Procedure for the Immobilizer System when Replacing the PCM, Keyless Control Module, or Steering Lock Unit: Condition
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Condition
WARNING: This page is about a different car, the 2007 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- When the keyless control module is replaced
- Have one or more card keys to be programmed after the replacement.
- Have two or more keys to be programmed after the replacement.
- When the keyless control module is not to be replaced
- Have one or more card keys to be programmed.
- Have two or more keys to be programmed after the replacement.CAUTION:
- Perform the procedures in the following order: "Key ID number clearing", "Card key programming", "Steering lock unit programming", and "Key programming". If there is a failure in the programming, the engine may not be started.
- When replacing only the PCM, start from Step 2. Key 1 in the procedure can be any valid key.
- Perform the "card key programming procedure" in Step 9 only when the keyless control module is replaced.
- Perform the "steering lock unit programming procedure" in Step 10 only when either the keyless control module or steering lock unit is replaced.
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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.