How to Turn Off an Engine Light on a Mazda

Written by katebo
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You can turn off the check engine light yourself manually on your Mazda. When the light illuminates on the instrument panel, it is telling you that there is a problem with the valves, solenoids or sensors on the Mazda. In any case, it's a problem that needs to be looked at immediately by a qualified mechanic. Turning off the light is a very quick and fairly simple process that requires just a couple of basic tools.

Skill level:
Moderately Easy

Things you need

  • 10-mm end wrench
  • Ignition key

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  1. 1

    Lift the bonnet of your vehicle and prop it open. Remove the negative cable from the battery terminal by loosening the nut on the cable with a 10-mm end wrench. (If you have a Miata, the battery is in the boot.)

  2. 2

    Wait for five minutes, taking care not to allow the negative battery clamp to touch the positive clamp or the positive side of the battery.

  3. 3

    Reattach the negative cable to the battery and tighten the nut using the end wrench.

  4. 4

    Put the key into the ignition and turn it to "On." Look at the instrument panel to make sure the check engine light has turned off.

Tips and warnings

  • You now need to reset the clock and your radio button presets, as this information was wiped out when you disconnected the battery.

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