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Old 12-16-2013, 01:09 PM   #1
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Angry cold no heat!!!

I've got little or no heat and the dealership said it's the best i'm going to get. BS It's not just a summer car. The heat gauge is half way but still no heat. 34000 km. on the car and was the same from day one. Any suggestions. 2012 jeep wrangler.

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Old 12-16-2013, 01:12 PM   #2
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I have volcanic heat In my 2012

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Old 12-16-2013, 01:14 PM   #3
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Have a look at your coolant recovery tank for signs of casting sand settled on the bottom. You might also look into flushing the heater core and/or entire cooling system. A lot of heater cores in the newer Wranglers have been plugged up with casting sand.
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Old 12-16-2013, 01:35 PM   #4
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Try a different dealer because that one is wrong.
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Old 12-16-2013, 02:11 PM   #5
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Same here heaters are garbage in these jeeps! I could melt skin with my f150 heater
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Old 12-16-2013, 02:28 PM   #6
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I keep checking to make sure there aren't flames coming out of the vents because there's so much heat.

In reality, yes, my 2014 JKU puts out as 4DoorCrush called it "volcanic heat". You've definitely got an issue.
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Old 12-16-2013, 02:28 PM   #7
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JK heaters are outstanding, you need to go back and get it fixed of go to another dealer.

In the mean time, I just like to say . . .

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Old 12-16-2013, 03:50 PM   #8
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Most dealers will avoid heater core replacements like the plague.

Not suprised at all they blew you off. Stick to your guns, it's fairly common.

Good news is you can often fix it at home without any tools or mechanical inclination.

The heat in my 2012 sucks too. Drivers side vent is the worst, 75 maybe 80F tops.


You can do this at home.

Park on a steep incline facing uphill, Set the e-brake and chok the wheels.
JK heater core is above the radiator cap, you want to raise the radiator to work air out of the heater core.

Take the radiator cap off and let it idle until the massive factory air pockets work themselves out of your heater core and cooling system.
Might take awhile.
20-30 minutes or until the bubbles stop.

It will bubble alot from the radiator cap when your thermostat opens, thats good.
You want all that air out so your heater core is full of just coolant not air.

Should help with the heat.

If it's still not getting hot try a new rad cap with 2lb higher pressure rating.

If it's still blowing cold dealer needs to test your heater core for blockage.
They will fight it because it's an extremely difficult repair but they need to do it.
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Old 12-16-2013, 04:06 PM   #9
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The Heaters in most year Wranglers are outstanding, and that includes the 2012.

Since your gauge is at the 1/2 mark, then that eliminated a bad thermostat, so you either have a heater core plugged, the control valve not allowing coolant to circulate through the core, or air in your cooling system!

I would try to find a different Dealer, that has some knowledge of the product that they represent!
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Old 12-16-2013, 05:23 PM   #10
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Welcome to the 2012 owner's nightmare! Bad cylinder heads, water pumps and sand in coolant which means tearing apart the vehicle to get to heater core! Did I mention bad Chinese sensors for oil pumps and speed control? Shame on Chrysler for setting a new low in quality!
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Old 12-16-2013, 07:12 PM   #11
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The heat in my 2012 JK, with 4600 miles, is burning hot.
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Old 12-16-2013, 07:18 PM   #12
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Sorry to highjack but my heat is only fire when im moving. Idling its like ok/good. Is that what you guys have as well?
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Old 12-16-2013, 07:27 PM   #13
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Sorry to highjack but my heat is only fire when im moving. Idling its like ok/good. Is that what you guys have as well?
no mine at idle is crazy hot.
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Old 12-16-2013, 07:41 PM   #14
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Mine is a 2013, and is very hot at idle!
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Old 12-16-2013, 07:44 PM   #15
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Hmmm wonder whats up with mine
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Old 12-16-2013, 08:46 PM   #16
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it's been hitting -13 degrees celsius here and my heat gets nice and toasty very fast. Only complaint I have is it's hard to get the rear door glass clear of frost. I'd have to crank the heat to sweating up front, and rear doors still stay icy.
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Old 12-16-2013, 08:52 PM   #17
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...yup...hot 2013 here...

...-20F the other day...jeep about cooked me out of it in very short order...

...the rear window frost thing i solve by just cracking the rear windows on my unlimited...
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Old 12-16-2013, 08:56 PM   #18
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...the rear window frost thing i solve by just cracking the rear windows on my unlimited...

Hmm.. that's a great idea. That would cause the cool air to exit there with warm air following and warming up the windows.. Why didn't I think of that! thanks
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Old 12-16-2013, 09:03 PM   #19
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Hmm.. that's a great idea. That would cause the cool air to exit there with warm air following and warming up the windows.. Why didn't I think of that! thanks
...welcome! us cold weather people need to stick together...
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Old 12-16-2013, 09:16 PM   #20
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Quote:
Originally Posted by crusty.01 View Post
I've got little or no heat and the dealership said it's the best i'm going to get. BS It's not just a summer car. The heat gauge is half way but still no heat. 34000 km. on the car and was the same from day one. Any suggestions. 2012 jeep wrangler.
Horsesh!t. The wrangler has the most powerful heater I have ever felt in a vehicle. You can bake a 5 topping pizza with it. It should be so hot that you can't even keep your hands near the vents for more than a second or two. Your dealer is a moron. Do you have another dealer you can go to? Contact chrysler as well.
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Old 12-16-2013, 09:17 PM   #21
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Same here heaters are garbage in these jeeps! I could melt skin with my f150 heater
Then you have issues.
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Old 12-16-2013, 09:18 PM   #22
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Mine gets warm enough to get me hot if im wearing a sweater or jacket so i guess thats good enough lol like i said its not bad when idling but when im moving its fire
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Old 12-16-2013, 09:56 PM   #23
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I have a 2013 and mine is very hot. It doesn't matter if driving in traffic or at idle.
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Old 12-18-2013, 08:20 AM   #24
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I had to take it backto another dealer, flushed the heater core and system. This dealer was realy good. On the way back from the dealer i had to shut the heat off,too damn hot,woo whoo,about time. It took three dealer's to get the heat fixed.
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Old 12-18-2013, 12:17 PM   #25
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I can bake bread in my soft top Wrangler, your dealer sucks. I was about ready to drive my Jeep through the front window of my dealership, switching to a different dealer restored my faith in Jeep, glad you had the same experience.
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Old 12-18-2013, 05:42 PM   #26
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Glad you got it fixed, but look for sediment in your overflow tank in the coming months to make sure all casting sand has been flushed out. Another 2012 issue that Chrysler denies it is a a quality problem.
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Old 12-19-2013, 12:02 PM   #27
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make sure all casting sand has been flushed out.
+1 to that. I had my 2012 JK's radiator and heater core replaced at 14000km because of the casting sand issue. 10 months and 15000km later it's back.
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Old 12-19-2013, 12:49 PM   #28
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Casting sand in the block has been an issue since the first JK rolled off the line. Have an '08 with the same issue (P/O went for 2 yrs without heat). Back flushing the heater core every so often keeps her blowing warm air, but no where near as hot as it should be. Hopefully flushing fixed it for you. Make sure you clearly document this issue so that if down the road the heater core needs to be replaced after your warrantee runs out you can make the argument that it should have been replaced under warrantee from the very beginning.
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Old 12-19-2013, 03:14 PM   #29
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On our 2012 the heater was so hot at first that we were able to run the Jeep topless in winter and still got boiling hot inside the Jeep. This winter is a different story. Heater is mild at best unless you turn it all the way up. In that case it is boiling hot. Turn it just a hair back and it is like the AC is on.

This happened most of the time. On a few occasions it works as it should. I need to take the Jeep in for a service, the transmission recall and a check engine light (misfire on cylinder 2 - the head issue). Will ask the dealer about it then and see what they can do. Jeep is 1 year and 9 months old with just over 22 000 miles.
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Old 12-19-2013, 04:46 PM   #30
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On our 2012 the heater was so hot at first that we were able to run the Jeep topless in winter and still got boiling hot inside the Jeep. This winter is a different story. Heater is mild at best unless you turn it all the way up. In that case it is boiling hot. Turn it just a hair back and it is like the AC is on.
Take a quick look at the bottom of the coolant reservoir. You will be able to see casting sand or sludge collecting in the tank.

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