Why is my Ford S-Max blowing cold air when the heat is on?

I recently purchased a Ford S-Max and noticed that when I have the heat on, it only blows cold air. What could be causing this issue and how can I fix it?

It sounds like there may be an issue with your car's heating system. I would recommend taking it to a certified mechanic to get it checked out. They will be able to diagnose the problem and provide you with a solution.

I had a similar problem with my Ford S-Max and it turned out to be a faulty thermostat. I would suggest checking that first and if it's not the issue, then take it to a mechanic.