No. 6 Replacing Only Key: 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 Key

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Courtesy of MAZDA MOTORS CORP.

KEY REPLACEMENT CHART

STEP	Procedure	Action after procedure
1	REPLACE THE KEY Replace the key.	Go to the next step.
2	PROGRAM/CLEAR AUXILIARY KEY Remove the valid keys and the valid advanced keys from the vehicle (keep them 1 m or more from the vehicle) and switch the ignition ON according to the directions on the M-MDS screen. Select, There is no programmed ignition key and programmed advanced key" from the M-MDS screen. CAUTION: If the ignition is switched ON by selecting "FORCED IGNITION ON", the engine cannot be started. Although the security light or the keyless warning light illuminates or flashes, this does not indicate an improper procedure. Continue to perform the procedure as indicated. After vehicle identification, select the following from the M-MDS initial screen. Using an IDS (laptop PC): Select "Body". Select "Security". Select "PATS Functions". Using a PDS (pocket PC): Select "All Tests and Calibrations". Select "PATS Functions". Perform the security access according to the directions on the M-MDS screen.	Go to the next step.
3	PERFORM IGNITION KEY ID NUMBER CLEARING Select "Ignition Key Code Erase and Program" from the M-MDS screen menu. Clear the ignition key ID number according to the directions on the M-MDS.	Go to the next step.
4	PERFORM IGNITION KEY ID NUMBER PROGRAMMING Program two keys according to the directions on the M-MDS. After verifying that the PATS function menu is displayed again on the M-MDS screen, select "Finish (this menu)". Switch the ignition off (LOCK). Disconnect the M-MDS from the DLC-2.	Go to the next step.
5	ESTABLISH IMMOBILIZER SYSTEM WITH KEY 1 NOTE: By starting the engine, the immobilizer system is established and key programming is finished. Start the engine using key 1. Verify that the security light and keyless warning light operate as shown in the following figure. Switch the ignition off (LOCK) and remove key 1. Courtesy of MAZDA MOTORS CORP.	Go to the next step.
6	VERIFY THAT KEY IS PROGRAMMED Start the engine using key 2. Verify that the security light and keyless warning light operate as shown in the following figure. Switch the ignition off (LOCK) and remove key 2. Are there other keys to be programmed? Courtesy of MAZDA MOTORS CORP.	Yes	Change the key and repeat Step 6.
6		No	Go to the next step.
7	VERIFY THAT ADVANCED KEY IS PROGRAMMED Bring the advanced key into the vehicle. Close all doors. Remove the key from the key slot and place it on the front passenger's seat. Start the engine using the advanced key. Verify that the security light and keyless warning light operate as shown in the following figure. After verifying that the keyless warning light turns off, switch the ignition off (LOCK). Courtesy of MAZDA MOTORS CORP.	Procedure is completed.