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. 4 KEY ADDITIONAL PROGRAMMING PROCEDURE CHANGINGPROCEDURE
2008 Mazda 6 s Sport, 4D Hatchback, Standard
No. 4 Key Additional Programming Procedure Changing: Procedure
2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Procedure
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.
- Using the key, turn the ignition switch to the ON position. (The key can be either the valid key or an unprogrammed key)NOTE:
- Although the security light flashes and DTC 15 is displayed when an unprogrammed key is used, this does not indicate an improper procedure. Continue to perform the procedure as indicated.
- Connect the M-MDS to the DLC-2.
- Select "BODY/SECURITY/PATS (immobilizer) function" from the M-MDS screen menu.
- Select "Customer spare key programming enable" or "Customer spare key programming disable" from the M-MDS screen menu. The key additional programming procedure is as follows according to the selected menu:DIAGNOSTIC PROCEDURE
Setting Additional key programming procedure Method using two valid keys Method using the M-MDS Customer spare key programming enable - - Customer spare key programming disable x - - : Available
x : Unavailable - Perform the security access according to the directions on the M-MDS screen. (See SECURITY ACCESS PROCEDURE ).
- After verifying that the PATS function menu is displayed again on the M-MDS screen, select "Finish (this menu)" to finish the M-MDS procedure.
- After Step 6, wait 5 s or more and then turn the ignition switch to the LOCK position.
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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.