Heater blows cold, how do i fix it??

What is your question?

2015 chrysler 300 v6, dual climate control, temperature is constant both sides an wont change blowing only cold air both sides,no heat on any setting just the same constant cold air. Has both manual controls an info panel controls. No clicking like blend doors sticking from either side. Both heater hoses are equally hot. Heater core seems to be functioning properly no leaks. Coolant levels normal. Does not appear to be a heater control or mixing valve on the car. Their maybe a heater core temp sensor according to some parts sites but cant find any info on changing it. Fan/blower works good, change from vent to defrost to floor works, just no heat an the cold air has been comstant temp regardless of settings. Any ideas on a fix would be great were going into the fall and winter season coming up.

What makes this problem better or worse?

Nothing

How long has your 2015 Chrysler 300 had this problem?

Few months