Jeep Garage  - Jeep Forum

Jeep Garage - Jeep Forum (http://www.jeepgarage.org/forums.php)
-   Trouble Shooting/Problems/Service (http://www.jeepgarage.org/f107/)
-   -   Outside Temperature Sensor Problem (http://www.jeepgarage.org/f107/outside-temperature-sensor-problem-50769.html)

jordanolsonm 11-26-2012 12:02 PM

Outside Temperature Sensor Problem
 
Firstly, let me say that I am disappointed in the remote start feature (a feature I was very excited about) due to the HVAC not coming on until I enter the vehicle. To add to the problem, the remote start comfort features aren't working because the temperature sensor reads 10-15 degrees warmer than it really is. I have given it ten minutes to adjust the temperature several times with no luck. Because I live in an area where it might get into the 20s once or twice a year, I haven't been able to reach the 40 degrees necessary to activate the comfort features. Any ideas?

Additional info:
2013 5.7L Limited

AAAA 11-26-2012 12:56 PM

Re: Outside Temperature Sensor Problem
 
Don't idle it, drive it for a few miles. After that mine is within 2-3 degrees of the local temperature on Travel Link which is located locally a few miles from my home. My HVAC works great with remote start, summer or winter. I am not sure that the temperature readout in the vehicle is the same as used for the HVAC.

jordanolsonm 11-26-2012 01:44 PM

Re: Outside Temperature Sensor Problem
 
I should have mentioned that after driving it, the temperature comes down to where it should be, but that isn't the issue. It needs to have the correct temperature upon remote starting so it can accurately control the Remote Start Comfort Features. AAAA, just curious, do you have automatic temperature control? Also, I'm fairly certain the temp in the evic is the temp they use, because I drove to work this morning and it read 38, the correct temperature, so I remote started and the heated seat and steering wheel came right on... no HVAC though.

berk483 11-28-2012 01:26 AM

Re: Outside Temperature Sensor Problem
 
Does the HVAC need to be left in AUTO for it to operate with the Remote Start Comfort Features? I only ask because mine will do the same thing. Steering wheel and seat will come on but it seems to be random wether or not the HVAC will be on when I get in.

AAAA 11-29-2012 11:34 AM

Re: Outside Temperature Sensor Problem
 
I have auto temp and I leave it on AUTO. I do not have heated steering wheel. I have gloves.

AKHLK 11-29-2012 12:58 PM

[QUOTE=jordanolsonm;715428].......To add to the problem, the remote start comfort features aren't working because the temperature sensor reads 10-15 degrees warmer than it really is. .....

My temp is usually over by 10 degrees as well. This morning it was 4 degrees and Jeep said it was 14. Does anyone know where the sensor is located?

jordanolsonm 11-29-2012 03:22 PM

Re: Outside Temperature Sensor Problem
 
AKHLK, does your temperature drop down close to the correct temperature when you begin driving, or shortly thereafter.

berk483 11-29-2012 08:07 PM

Re: Outside Temperature Sensor Problem
 
Mine starts higher than actual as well but goes down shortly after.

AKHLK 11-29-2012 09:31 PM

Quote:

Originally Posted by jordanolsonm (Post 717170)
AKHLK, does your temperature drop down close to the correct temperature when you begin driving, or shortly thereafter.

Yep, it does drop down after driving (not just running parked though). It always starts 10 degrees high. Left the house this afternoon, 13 degrees outside, jeep showed 23. I've never noticed that it's interfered with the startup of the "comfort" features with remote auto-start though, so it's never bothered me. I just thought it was strange that it's always exactly 10 degrees high and wondered where the sensor was.

ColdCase 11-29-2012 09:47 PM

Re: Outside Temperature Sensor Problem
 
1 Attachment(s)
Ambient temp sensor is near the center front behind the grill/bumper.

The sensor reading high until there is air flow doesn't make much sense to me unless there is something insulating the sensor, blocking airflow, or warming it up. If its inaccurate you would think it would be inaccurate regardless.

I dunno, maybe the 5VDC reference being applied to the sensor to take the reading (the sensor is a resistor) is heating some of them up enough to be off 10 degrees when stationary. The airflow then removes the bit of heat.

BTW, my heated seats/wheel as well as AC after remote start have always worked as expected.

Theo P. 04-08-2013 06:14 PM

Re: Outside Temperature Sensor Problem
 
This is interesting - the outside air temp sensor on my 2014 Grand Cherokee Limited seems to be malfunctioning. This thread has observed high temps. Mine is fixed low and eventually eases up after 10 minutes or more. Example. Today, it insisted that it was 42 degrees out. It was 26 degrees warmer (68). The other day it was fixed on 39 when I drove it two times during the day - it was 58 out. We've had several cars and I've never had one where the car didn't just display the outside temp right off and right where you'd expect it to be (i.e. the actual outside temperature). This isn't a complicated bit, so I'm surprised to have the issues and see these posts. Is Jeep using a poor quality part or are these too hot / too cold stories the odd exceptions? I'll be taking it in for its first service visit to get the problem resolved.

jaxkxx 04-08-2013 08:38 PM

Re: Outside Temperature Sensor Problem
 
Quote:

Originally Posted by Theo P. (Post 798969)
This is interesting - the outside air temp sensor on my 2014 Grand Cherokee Limited seems to be malfunctioning. This thread has observed high temps. Mine is fixed low and eventually eases up after 10 minutes or more. Example. Today, it insisted that it was 42 degrees out. It was 26 degrees warmer (68). The other day it was fixed on 39 when I drove it two times during the day - it was 58 out. We've had several cars and I've never had one where the car didn't just display the outside temp right off and right where you'd expect it to be (i.e. the actual outside temperature). This isn't a complicated bit, so I'm surprised to have the issues and see these posts. Is Jeep using a poor quality part or are these too hot / too cold stories the odd exceptions? I'll be taking it in for its first service visit to get the problem resolved.

I have the same problem with my 2014 Overland. It was 60 degrees outside but Jeep only showed 50


All times are GMT -5. The time now is 12:18 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2012 - JeepGarage.Org
The Jeep Grand Cherokee Owners Community