Not to worry, that's just the "maintenance minder" light to remind you maintenance (oil change and/or tire rotation) is due soon, not a malfunction light.
In the infotainment home screen, scroll to the left for "applications", then down to "maintenance" and you'll see what is due and illuminating the wrench light. Get the maintenance taken care of and reset the counters and you'll be good to go.
Incidentally, in the "applications" section you will also find a subject "warning guidance" that will give you information if there are warning lamps illuminated.
What year and trim cx-5 do you have?