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
Not Reusing Windshield
- Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION (US) .)
- Remove the following parts:
- Windshield wiper arm and blade (See WINDSHIELD WIPER ARM AND BLADE REMOVAL/INSTALLATION .)
- Cowl grille (See COWL GRILLE REMOVAL/INSTALLATION .)
- Windshield wiper motor (See WINDSHIELD WIPER MOTOR AND LINK REMOVAL/INSTALLATION .)
- Front fender molding (See FRONT FENDER MOLDING REMOVAL/INSTALLATION .)
- Forward sensing camera (FSC) (with forward sensing camera (FSC)) (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION .)
- Rain sensor (See RAIN SENSOR REMOVAL/INSTALLATION .)
- Auto-dimming rear-view mirror (with auto-dimming rear-view mirror) (See AUTO-DIMMING REAR-VIEW MIRROR REMOVAL/INSTALLATIONΒ .)
- Rear-View mirror (without auto-dimming rear-view mirror) (See REAR-VIEW MIRROR REMOVAL/INSTALLATIONΒ .)
- A-pillar trim (See A-PILLAR TRIM REMOVAL/INSTALLATION .)
- Sun visor (See SUNVISOR REMOVAL/INSTALLATION .)
- Front map light (See FRONT MAP LIGHT REMOVAL/INSTALLATION (US) .)
- Assist handle (front) (See ASSIST HANDLE REMOVAL/INSTALLATION .)
- Sensor cover (See SENSOR COVER REMOVAL/INSTALLATIONΒ .)
- Set the headliner out of the way.
- Disconnect the windshield wiper de-icer connector. (with windshield wiper de-icer)
- Remove the windshield wiper de-icer wiring harness from the hooks. (with windshield wiper de-icer)
- Remove the wiring harness clip. (with windshield wiper de-icer)
- Apply protective tape along the edge of the body.NOTE:
- Overlap and adhere the protective tape to the corners to prevent damage.
- Remove the windshield molding by pulling it outward.NOTE:
- If the windshield molding is difficult to remove, warm the windshield molding using a heat gun.
- Cut out the sealant all around the glass using a sealant remover.NOTE:
- If it is difficult to cut sealant, use piano wire and follow the procedure under "Reusing Windshield".
- Remove the windshield.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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