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 Select, 4D Hatchback, AWDFACTORY OEM SERVICE PROCEDURE
Electrical Component Locations
Select a section or procedure below to view factory instructions:
Active Air Shutter SystemAirbag SystemAll Wheel Drive (AWD) SystemAutomatic Transaxle (ET6A-El)Automatic Transaxle (EV6A-El, EV6AX-El)Automatic Transaxle (GW6AX-El)Automatic Transaxle Shift MechanismBody Control SystemBody PanelsBrake SystemCharging SystemDoors And LiftgateDriveshaftDynamic Stability ControlElectric Power Steering SystemEmission System (VIN 7 & VIN L)Emission System (VIN M)Emission System (VIN Y)Engine Control System (VIN 7 & VIN L)Engine Control System (VIN M)Engine Control System (VIN Y)Engine Cooling System (VIN 7 & VIN L)Engine Cooling System (VIN M)Engine Cooling System (VIN Y)Engine Lubrication System (VIN 7 & VIN L)Engine Lubrication System (VIN M)Engine Lubrication System (VIN Y)Engine Mechanical System (VIN 7 & VIN L)Engine Mechanical Intake-Air System (VIN 7 & VIN L)Engine Mechanical System (VIN M)Engine Mechanical Intake-Air System (VIN M)Engine Mechanical System (VIN Y)Engine Mechanical Intake-Air System And Turbocharger (VIN Y)Engine Starting System (VIN 7 & VIN L)Engine Starting System (VIN M)Engine Starting System (VIN Y)Entertainment SystemExterior TrimFront Suspension SystemFuel System (VIN 7 & VIN L)Fuel System (VIN M)Fuel System (VIN Y)Glass/Windows/MirrorsHVAC Basic SystemHVAC (Auto A/C) Control SystemHVAC (Manual A/C) Control SystemI-ACTIVSENSEIgnition System (VIN 7 & VIN L)Ignition System (VIN M)Ignition System (VIN Y)Instrumentation/Driver InfoInterior TrimLighting SystemManual TransaxleManual Transaxle Shift MechanismManual Transaxle ClutchParking Brake SystemPower SystemsPropeller ShaftRear DifferentialRear Suspension SystemSeat BeltsSeatsSecurity And LocksSteering Wheel WarmerSunroof SystemTransfer CaseWheel Hubs - RearWheel Hubs & Steering Knuckle - Front
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.