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.
CMDTC Memory Clearing Procedure
2023 Mazda CX-5 SSECTION CMDTC Memory Clearing Procedure
WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
- Connect the M-MDS to the DLC-2.
- After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
- Select "Self Test".
- Select "All CMDTCs".
- Verify the DTC according to the directions on the screen.
- Press the clear button on the DTC screen to clear the DTC.
- Switch the ignition off.
- Switch the ignition ON (engine off or on) and wait for 5 s or more.
- Perform DTC inspection. (See DTC INSPECTION [REAR BODY CONTROL MODULE (RBCM)] .)
- Verify that no DTCs are displayed.
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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.