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.
2021 Mazda 3 BaseFACTORY OEM SERVICE PROCEDURE
Door Locks
| Display of center display | Function | Settings |
|---|---|---|
| Automatic Door Locks | Configures when the automatic door locks operate. | Lock: While Driving/Lock: While Driving/Unlock: Ignition Off/Lock: In Gear/Lock: In Gear/Unlock: In Park, Lock: While Driving, Unlock: In Park/Off |
| Automatic Re-Lock Wait Time | Sets the time for the doors to re-lock if a door is not opened. | 30 seconds/60 seconds/90 seconds |
| Keyless Walk Away Auto-Lock | Enables the vehicle to automatically lock when the driver walks away. | Enable/Disable |
| Keyless Beep Confirmation Volume | Adjusts the beep volume when locking/unlocking doors. | Low/Medium/High/Off |
| Keyless Unlock Mode | Selects which doors unlock with the keyless entry switch. | Once: All Doors/Once: Driver's Door/Twice: All Doors |
| Power Liftgate Keyless Control | Configures when the power liftgate can be operated from the keyfob. | Only When Unlocked/Always |
| Restore | Restores door lock settings to the factory defaults. | Reset/Cancel |
Factory Service Tools
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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.
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