When should you change antifreeze?
Check in the owners manual or ask a mechanic/store to see what the recommended interval is for your car under the conditions n which you drive. Most cars like yours specify every 5 years or 100000 to 150,000 miles.
2 to 5 years, coolant can break down over time and lose it's anti corrosion properties. If your 2014 has never had it's coolant flushed and replaced then it's over due.