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
Auto-Dimming Rearview Mirror Removal/Installation: Notes
- Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
- Remove the sensor cover. (See SENSOR COVER REMOVAL/INSTALLATION .)
- Disconnect the auto-dimming rear-view mirror connector.
- Remove the wiring harness clip.CAUTION:
- Detach the auto-dimming rear-view mirror from the mirror base while holding the auto-dimming rear-view mirror by hand. Otherwise, the auto-dimming rear-view mirror may fall off and be damaged.
- Move the auto-dimming rear-view mirror in the direction of the arrow shown in the figure and detach the auto-dimming rear-view mirror from the mirror base.
- Remove the auto-dimming rear-view mirror. (See AUTO-DIMMING REAR-VIEW MIRROR INSTALLATION NOTE .)
- Install in the reverse order of removal.
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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