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How to Replace the Temperature Sensor on a Mazda 3 2.3L

Model: Mazda 3 MK 2, BL - Years 2009-2013
Part: Engine coolant temperature sensor

Today, you will see the main instructions that will allow you to remove and replace the temperature sensor on the Mazda 3 2.3L by following these simple steps. First, open the bonnet of your car and locate the temperature sensor, which is found behind the engine block (under the brake fluid reservoir). Then disconnect the electrical connector from the sensor and unscrew the fixing screws to remove it. At this point, install the new original temperature sensor, connect it, and check its operation!

Updated on 1 July 2026 by ScegliAuto

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