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 MANUALSMAZDA2013MX-5 MIATA GRAND TOURING, AUTOMATIC TRANSREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSON-BOARD DIAGNOSTIC [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]DTC INSPECTION [IMMOBILIZER SYSTEM (KEYLESS ENTRY SYSTEM)]SECURITY LIGHT
2013 Mazda MX-5 Miata Grand Touring, Automatic Trans
Security Light
2013 Mazda MX-5 Miata Grand Touring, Automatic TransSECTION Security Light
- Turn the ignition switch to the ON position.
- Verify the security light state.
- If there is any malfunction:
- After any malfunction is detected, the security light will function as follows for approx. 1 min
.
- DTC 16 and lower: Flashes
- DTC 21 and higher: Illuminated
- After any malfunction is detected, the security light will function as follows for approx. 1 min
.
- If there is no malfunction:
- The security light illuminates for approx. 3 s and goes out.
- If there is any malfunction:
- When any malfunction has been detected, read DTCs via flashing patterns displayed after the security light flashes or is illuminated for approx. 1 min
.
- Perform troubleshooting according to the corresponding DTC inspection.NOTE:
- A verified DTC is flashed 10 times repeatedly by the security light.
- If multiple DTCs are verified, the security light displays only the smallest DTC.
- Perform troubleshooting according to the corresponding DTC inspection.
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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.