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
Air Bag Sensor: Remove & Replace
| Applies To | Note | Standard Hours | Warranty Hours | Skill Level |
|---|---|---|---|---|
| Sedan, Rear,Side,Both,#2 | 1.9 | B | ||
| Sedan, Rear,Side,One Side,#2 | 1.3 | B | ||
| Crash Sensor,Front,All | Includes: R&I Front Bumper Cover. Includes: R&I Headlining Assembly. | 3.2 | B | |
| Crash Sensor,Front,Center | Includes: R&I Front Bumper Cover. | 2.1 | B | |
| Crash Sensor,Front,Side,One | Includes: R&I Front Bumper Cover. Includes: R&I Headlining Assembly. | 2.5 | B | |
| Front,Side,Both,#1 | 1.9 | B | ||
| Front,Side,One Side,#1 | 1.1 | B | ||
| Pressure Sensor,Both Sides | 2.4 | B | ||
| Pressure Sensor,One Side | 1.0 | B | ||
| Seat Track Position Sensor | Includes: R&I Seat. Includes: Calibration. | 2.1 | B | |
| Weight Sensor | Includes: R&I Seat. Includes: Calibration. | 2.2 | B | |
| Combination Procedure: DISTANCE SENSOR: Alignment: | ||||
| Crash Sensor,Front Radar Sensor Aiming,Dynamic Aiming | 0.9 | B | ||
| Crash Sensor,Front Side/Rear Side Radar Sensor Aiming,Dynamic Aiming | 0.9 | B | ||
| Combination Procedure: PARKING ASSIST SYSTEMS: Alignment: | ||||
| Crash Sensor,360 Degree View System Aiming | Includes: Perform 360 Degrees View System Verification | 2.5 | B | |
| Crash Sensor,360 Degree View System Verification | 1.5 | B | ||
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.