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
Driver Assistance System
| Display of center display | Function | Settings |
|---|---|---|
| Cruise Assist Mode | Selects how the vehicle controls speed and position during cruise assist. | Smooth/Standard/Responsive |
| Mazda Radar Cruise Control | Enables automatic control of following distance when using cruise control. | Enable/Disable |
| Traffic Sign Speed Limit Sync | Automatically limits the vehicle's speed based on posted speed limit signs. | Automatic/Manual/Off |
| Audible Cruise Confirmation | Enables audible tones when interacting with cruise control. | Enable/Disable |
| Speed Limit Sign Alert |
Selects the desired notification type for posted speed limit sign alerts. | Visual/Visual + Audible/Off |
| Speed Limit Sign Threshold | Sets threshold for alert notifications when the posted speed limit is exceeded. | + 0 km/h (+ 0 mph)/+ 5 km/h (+ 3 mph)/+ 10 km/h (+ 5 mph) |
| Speed Limit Alert | Selects the desired notification type for speed limit alerts. | Visual/Visual + Audible/Off |
| Speed Limit Alert Threshold | Selects the desired speed threshold for speed limit alert notifications. | + 0 km/h (+ 0 mph)/+ 5 km/h (+ 3 mph)/+ 10 km/h (+ 5 mph) |
| Driver Attention Alert |
Enables driver attention monitoring and provides alerts when fatigue is detected. | Enable/Disable |
| Driver Monitoring | Enables camera-based Driver Monitoring to detect fatigue and provide alerts. | Enable/Disable |
| Restore | Restores the driver assistance system settings to the factory de-faults. | Reset/Cancel |
Factory Service Tools
Use the Manual With the Right Hardware
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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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