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
Audio Settings
| Display of center display | Function | Settings |
|---|---|---|
| Sound Adjustment Mode |
Selects a basic or advanced sound adjustment mode. | Basic/Advanced |
| Bass | Adjusts the bass output level. | Bass range (19 levels) |
| Treble | Adjusts the treble output level. | Treble range (19 levels) |
| Equalizer | Selects or creates the desired equalizer curve. | Flat/Pop/Rock/Jazz/RB/Classical/Custom 1/Custom 2/Custom 3/Customize EQ |
| Listening Position | Selects the desired listening position. | Driver's Seat/All Seats |
| Fader | Moves the audio emphasis forward or rearward. | Front-Rear (19 levels) |
| Balance | Moves the audio emphasis to the left or right. | Left-Right (19 levels) |
| Automatic Level Control*3 | Automatically adjusts volume level to compensate for vehicle speed. | Off/1-7 (8 levels) |
| Automatic Source Level Adjustment | Automatically stabilizes volume levels across sources. | Enable/Disable |
| Bose ® Stereo Mode | Selects the desired stereo listening experience. | Standard/Linear |
| Bose® Centerpoint | Creates a virtual surround sound listening experience. | Off/1-3 (4 levels) |
| Bose ® AudioPilot | Automatically adjusts the music to compensate for road noise. | Off/1-3 (4 levels) |
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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