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 CX-3 AWDFACTORY OEM SERVICE PROCEDURE

Main Fuse Removal/Installation

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION .)
While pressing the main fuse cover hook in the direction of the arrow (1) shown in the figure using a tape-wrapped flathead screwdriver, lift up the main fuse cover in the direction of the arrow (2) to detach the main fuse cover hook from the main fuse tab.

Fig 1: Pressing Main Fuse Cover Hook
Courtesy of MAZDA MOTORS CORP.
Remove the main fuse cover.

Fig 2: Removing Main Fuse Cover
Courtesy of MAZDA MOTORS CORP.
Remove the nuts.

Fig 3: Identifying Main Fuse Cover Nuts With Torque Specifications
Courtesy of MAZDA MOTORS CORP.
Remove the main fuse.
Install in the reverse order of removal.

Chapter Navigation

Return to Chapter: Section 7 (Power Systems)

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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.