Wrench light flashing...Help!

Did you look in the owner's manual? A flashing wrench light normally means maintenance is required, such as an oil change.
 
When flashing (SKYACTIV-D 1.5, SKYACTIV-D 2.2)

The sedimentor separates water from the fuel.

If water accumulates in this filter, the warning light will flash. When it does, consult an expert repairer, we recommend an Authorised Mazda Repairer as soon as possible.
 
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