how to reset ecu

nalspeed

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mazda protege 5 silver
how do you reset the ecu my check engine light came on and now we fixed the problem i change the thermostat and spark plugs and now I want the -check engin light- to go away do I need to do anything or will it go away by itself
 
You need to remove the negative cable from the battery terminal. Get in the car and hit the brakes a couple of times. Re-connect the cable, and you are done, my friend!
 
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