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 586 (SECURITY SYSTEM AND LOCKS SYSTEM)IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING [KEYLESS ENTRY SYSTEM]NO. 1 ADDITIONAL KEY PROGRAMMING PROCEDURE (USING TWO VALID KEYS)PROCEDURE

2011 Mazda 3 Mazdaspeed, 2.3 3

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

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Procedure

WARNING: This page is about a different car, the 2010 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Valid Keys

Courtesy of MAZDA MOTORS CORP.

ITEM REFERENCE

Step	Procedure	Action after procedure
1	LAUNCH PROGRAMMING MODE Switch the ignition to ON using key 1. After verifying that the security light illuminates for approx. 3 s and turns off, switch the ignition off within approx. 4 s using key 1. Remove key 1. Switch the ignition to ON using key 2. After verifying that the security light illuminates for approx. 3 s and turns off, switch the ignition off within approx. 4 s using key 2. Remove key 2.	Go to the next step.
2	PERFORM ADDITIONAL KEY PROGRAMMING Switch the ignition to ON using key 3. Verify that the security light illuminates for approx. 3 s , and then turns off. Remove key 3. Are there other keys to be programmed?	Yes	Go back to Step 1.
2		No	Go to the next step
3	VERIFY THAT ANY KEY IS PROGRAMMED Verify that the engine can start and run for 5 s or more using all the programmed keys. NOTE: When verifying that the engine starts, wait at least 5 s or more before starting the engine using the next key.	Procedure is completed

RENDER: 1.0x

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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.