I tried letting the system equalize and I used a thermometer. I set it at 60 and started the Jeep. It heated the interior until I was uncomfortable and after 5 minutes it cooled off till I was comfortable. The thermometer varied from 69 to 74 during the comfortable time. I don't know the temp before I was comfortable as my thermometer couldn't keep up. I think that Jeep's sensors can't keep up either and they don't detect the right temp. I hope a Jeep engineer (that cares) is reading this tread.
I think Sailor has it right.
We along with almost everybody had a real cold snap here--SE Texas.
AC would blow hot at first, too much.
I'd lower the set point and in a minute or two it would do fine.
I think the engine gets the Coolant hot faster than the Computer Guys figured.
Doesn't take long.
I had a
Ram Diesel would take 15 min to get hot.
So I figure a Re-Flash is on the way
Yes, I have the exact problem with my 2014 GC with 500 miles. Just purchased Dec. 23rd. Not sure build date. Brought it in for service for this, plus a larger problem, and the mechanic said "its probably because the outside temp is so low" He said he couldn't not find anything wrong. I will have it set at 68 and it blows out- feels like 78. Hopefully if enough of us complain they will fix the issue.
I have the same problem with my 2014 grand cherokee summit . At lo it's very cold . At 61 or 62 degrees , it just switches right over to ripping hot . That is not normal . We should be able to regulate a mixture of cool air outside with warm air from the engine . Cars have offered this option in the past forever . I had a 2011 dodge charger with the same uconnect system and I did not have this problem . I think the system still thinks it's in auto even though we don't want it to be. I'll bring it up to the the dealer when I bring it in for the recall and transmission (Eco) flash update . This needs to be fixed .
I had a Jeep tech tell me that the system in our Jeeps use infrared to determine inside temp. The surfaces need to warm up to the desired temp before the heater will reduce the heat coming in. This is why it overshoots. Even after it equalizes, the temp is 8 or 9 off. All of this can be fixed but only Chrysler can do it through programming. The dealer techs hands are tied. Everyone needs to write letters to Chrysler. I will be sending one every week until the problem is fixed.