Mazda 3 Blue Temp Light. Mazdaspeed 3/Mazda3 LED Reverse Lights But for this light to come on right at startup is normal. The blue temperature light is the "Low Engine Coolant Temperature" warning light
A Guide to Your Mazda’s Dashboard Lights from www.hennessy-mazda.com
After the engine is fully warmed up, the normal coolant operating temperature ranges variously from 176F to 192F in cool to hot weather. I installed an after market temp gauge on mine just so I can watch what temps are normal and catch anything that may be abnormal before the red idiot light comes on.
A Guide to Your Mazda’s Dashboard Lights
Blue light is on until the coolant reaches ~130 degrees Wish Mazda set the flashing temp a bit lower to give more of a warning, but they engineered the car and probably know more than I do. 2016.5 CX5 GT w Tech-Titanium Fla, 2005 Mazda 3 GS - Carbon Grey
2018 Mazda3 in Eternal Blue. Full paint correction + ceramic coat. Just. If it ever turns on red and is blinking, you are over heating; pull over immediately. 2016.5 CX5 GT w Tech-Titanium Fla, 2005 Mazda 3 GS - Carbon Grey
Image Gallery Mazda 3 2015 Blue. But for this light to come on right at startup is normal. If the low engine coolant temperature indicator light remains illuminated after the engine has been sufficiently warmed up, the temperature sensor could have a malfunction.