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  #73  
Old 01-20-2014, 01:56 PM
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Re: Problem With 2014 Grand Cherokee Heater

So I've got the Jeep back, but haven't taken a long enough drive when it's cold out to verify the fix actually worked. The invoice says the cabin temperature sensor was faulty, often giving erratic readings (+/- 50 degrees from actual). I think the part number is 55111178AC.

It was pretty difficult for them to actually see the error on their tools until I got them to take it for a longer drive.

Hopefully this fixed the issue. As an aside, I'm not terribly happy with their service as I had to argue to convince them that there really was a problem, then had to argue to get them to comp a rental (even though they were keeping my brand new car for 4+ days), they used a quarter of a tank of gas without topping it off, and didn't even bother to give the car a wash. Maybe I'm just used to BMW, but I wouldn't have even had to ask for any of those things. None of it really matters if they actually fixed the issue, but it's kind of shocking to me the level of customer care difference.
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  #74  
Old 01-20-2014, 02:05 PM
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Re: Problem With 2014 Grand Cherokee Heater

Wonder if there is a bad batch of sensors out there? Seems like this has enough respondents that it'll end up as a Star Case for fixing, TSB, etc.
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  #75  
Old 01-20-2014, 06:48 PM
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Re: Problem With 2014 Grand Cherokee Heater

Quote:
Originally Posted by _Bryan_ View Post
So I've got the Jeep back, but haven't taken a long enough drive when it's cold out to verify the fix actually worked. The invoice says the cabin temperature sensor was faulty, often giving erratic readings (+/- 50 degrees from actual). I think the part number is 55111178AC.

It was pretty difficult for them to actually see the error on their tools until I got them to take it for a longer drive.

Hopefully this fixed the issue. As an aside, I'm not terribly happy with their service as I had to argue to convince them that there really was a problem, then had to argue to get them to comp a rental (even though they were keeping my brand new car for 4+ days), they used a quarter of a tank of gas without topping it off, and didn't even bother to give the car a wash. Maybe I'm just used to BMW, but I wouldn't have even had to ask for any of those things. None of it really matters if they actually fixed the issue, but it's kind of shocking to me the level of customer care difference.
Thanks for the part number let us know if you think it fixes the issue. Part is only $36 maybe worth a change at home if it is easily accessible rather than going through the lengthy battle with the dealer to convince them the erratic behavior is not normal.
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  #76  
Old 01-20-2014, 07:35 PM
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Re: Problem With 2014 Grand Cherokee Heater

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Originally Posted by silvermax04 View Post
Thanks for the part number let us know if you think it fixes the issue. Part is only $36 maybe worth a change at home if it is easily accessible rather than going through the lengthy battle with the dealer to convince them the erratic behavior is not normal.
I concur: for that price, this is something I would attempt to fix on my own over a weekend vs. the dealer warranty service alternative. Of course, that's predicated on the replacement actually resolving the issue.
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  #77  
Old 01-20-2014, 07:45 PM
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Re: Problem With 2014 Grand Cherokee Heater

Unfortunately I think it might be more trouble than you anticipate, because I think the sensor is burried. Here's the relevant invoice notes:

1115- DISCONNECT BATTERY, REMOVE KNEE AIRBAG, KNEE BLOCKER, SHIFTER HANDLE AND BEZEL, RADIO BEZEL, STORAGE BIN, LEFT SIDE CENTER CONSOLE SIDE COVERS AND TEMP SENSOR BEZEL, REMOVE AND REPLACE IN CAR TEMP SENSOR, REINSTALL ALL PARTS REMOVED.

If you guys are comfortable with that, awesome. I know I'd be real hesitant to do anything involving removing an airbag.
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  #78  
Old 01-20-2014, 08:11 PM
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Re: Problem With 2014 Grand Cherokee Heater

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Originally Posted by _Bryan_ View Post
Unfortunately I think it might be more trouble than you anticipate, because I think the sensor is burried. Here's the relevant invoice notes:

1115- DISCONNECT BATTERY, REMOVE KNEE AIRBAG, KNEE BLOCKER, SHIFTER HANDLE AND BEZEL, RADIO BEZEL, STORAGE BIN, LEFT SIDE CENTER CONSOLE SIDE COVERS AND TEMP SENSOR BEZEL, REMOVE AND REPLACE IN CAR TEMP SENSOR, REINSTALL ALL PARTS REMOVED.

If you guys are comfortable with that, awesome. I know I'd be real hesitant to do anything involving removing an airbag.
Agree 100% on the airbag I am not touching that. Thanks for the tip
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Old 01-20-2014, 08:53 PM
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Originally Posted by _Bryan_ View Post
If you guys are comfortable with that, awesome. I know I'd be real hesitant to do anything involving removing an airbag.
Haha, I believe it's important to know one's limitations: no work involving airbags for me.

How long was your vehicle with the dealer for the repair?
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Old 01-20-2014, 11:34 PM
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Re: Problem With 2014 Grand Cherokee Heater

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Originally Posted by Roadkill View Post
How long was your vehicle with the dealer for the repair?
4 days total: 2 to isolate(/believe) the issue, they ordered the part on Thursday, it arrived Saturday and I got the call to come pick up the car around 2:30pm.
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Old 01-23-2014, 07:11 PM
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Re: Problem With 2014 Grand Cherokee Heater

Thanks for all the useful info on this thread. I have a 2014 GC Limited, 3.6L, lux package, ORA II, 8.4N. Build date was sometime in September 2013. No problems with HVAC until the last month. I always leave it on auto, around 70-72. Lately--and intermittently--I will start the Jeep and immediately it will start blowing hot air out the dash outlets--really hot. Last night the external temp was 70, AC was set at 70, and I have no idea what the interior reached. In my other cars the HVAC system would have been barely active at that temp differential. We lowered all the windows to cool off. Turning the temp all the way down did not help. We turned the fan down, which lowered the blower speed, but not the temp. Finally we turned the system completely off. When this has happened before EVENTUALLY the system seemed to correct itself while driving. Other times, shutting the engine off and restarting seemed to take care of the problem, like rebooting a computer. It goes into the dealer tomorrow morning, and I hope there is some resolution. Not looking forward to summer desert driving when I get into a hot car in 110 temps AND getting hot air blown!

I will post the results of the dealer visit. Otherwise, the Jeep has been great in the first 1300 miles.
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  #82  
Old 01-24-2014, 03:47 PM
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Re: Problem With 2014 Grand Cherokee Heater

Quote:
Originally Posted by _Bryan_ View Post
Unfortunately I think it might be more trouble than you anticipate, because I think the sensor is burried. Here's the relevant invoice notes:

1115- DISCONNECT BATTERY, REMOVE KNEE AIRBAG, KNEE BLOCKER, SHIFTER HANDLE AND BEZEL, RADIO BEZEL, STORAGE BIN, LEFT SIDE CENTER CONSOLE SIDE COVERS AND TEMP SENSOR BEZEL, REMOVE AND REPLACE IN CAR TEMP SENSOR, REINSTALL ALL PARTS REMOVED.

If you guys are comfortable with that, awesome. I know I'd be real hesitant to do anything involving removing an airbag.

why would the cabin sensor be buried so far in!! lol maybe that was not the best design idea since it seems to be no where NEAR the cabin lol


Quote:
Originally Posted by UNCGeol View Post
Thanks for all the useful info on this thread. I have a 2014 GC Limited, 3.6L, lux package, ORA II, 8.4N. Build date was sometime in September 2013. No problems with HVAC until the last month. I always leave it on auto, around 70-72. Lately--and intermittently--I will start the Jeep and immediately it will start blowing hot air out the dash outlets--really hot. Last night the external temp was 70, AC was set at 70, and I have no idea what the interior reached. In my other cars the HVAC system would have been barely active at that temp differential. We lowered all the windows to cool off. Turning the temp all the way down did not help. We turned the fan down, which lowered the blower speed, but not the temp. Finally we turned the system completely off. When this has happened before EVENTUALLY the system seemed to correct itself while driving. Other times, shutting the engine off and restarting seemed to take care of the problem, like rebooting a computer. It goes into the dealer tomorrow morning, and I hope there is some resolution. Not looking forward to summer desert driving when I get into a hot car in 110 temps AND getting hot air blown!

I will post the results of the dealer visit. Otherwise, the Jeep has been great in the first 1300 miles.
this is EXACTLY what has happened to me. Heat has come on with a/c - turn temps down did nothing. I will mention the sensor to my dealer on monday
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  #83  
Old 01-24-2014, 03:51 PM
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Re: Problem With 2014 Grand Cherokee Heater

Quote:
Originally Posted by _Bryan_ View Post
4 days total: 2 to isolate(/believe) the issue, they ordered the part on Thursday, it arrived Saturday and I got the call to come pick up the car around 2:30pm.
Keep us posted on the fix Bryan. I have an appointment in a week to have this looked at. Tired of the sauna in my car. Thanks.
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  #84  
Old 01-27-2014, 12:29 AM
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Re: Problem With 2014 Grand Cherokee Heater

I am new to this forum. I have a Grand Cherokee 2014, I too am having a problem with the HVAC. When I first start the vehicle I will get HOT air then it will cool to the ambient temperature. I bump it up a few degrees and I get HOT air but it always goes back to the ambient temperature. I can do this until I reach HI. At that point it stays HOT.
Had it back to the dealer twice, first time they reloaded the software and the second time the replaced the AC module. Neither fixed the problem.
Just last week I notified Chrysler customer assistance but have not gotten an answer back yet.
It does it whether in auto or manual, although auto is in my opinion worthless the way it is set up.
I am very frustrated. Down with computers in cars, bring back manual adjustments, never had problems with them.
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