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

Selector Lever Knob Installation Note

Install the spring to the selector lever knob.
CAUTION:
- Install the spring so that it is stopped by the stopper.
Courtesy of MAZDA MOTORS CORP.
Install the lock release button cover so that it engages with the hook of the selector lever knob.

Courtesy of MAZDA MOTORS CORP.
Install the selector lever knob to the selector lever component.

Courtesy of MAZDA MOTORS CORP.

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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