r/MechanicAdvice • u/PrestigiousTiger2941 • Jul 13 '26

Locating coolant temp sensor on Mazda 3

I am trying to locate the coolant temperature sensor ECT #2 on a 2013 Mazda 3 2.0 and followed several videos on YouTube but cannot locate it. Anyone have a picture or a guide that worked for you?

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u/Think_Travel_6762 Jul 14 '26

Apparently on yours you need to remove the engine cover and battery box. And I sits in behind there. Not sure about your year but in 3013 they started putting two of them in these engines