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
Temperature detection function
- The center display detects temperature using a temperature sensor.
- The center display converts the temperature detected by the temperature sensor to an electrical signal (GMSL signal) and sends it to the CMU.
NOTE:
- If the center display receives a temperature warning pop-up screen display request signal (GMSL signal) from the CMU, it displays the temperature warning pop-up screen on the LCD.
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:
- • 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.