outside temperature
Pro
Joined: Mar 2010
Posts: 690
Likes: 1
From: Wisconsin
Mine does the same thing. Sometimes it will stay stuck on a certain temp for an hour or more. It will be obviously warmer or colder outside but it wont register correctly. Then for no reason it will just start working again. Never have been able to figure it out.
Safety Car
Joined: Apr 2006
Posts: 4,254
Likes: 5
From: Anaheim Hills, Ca
The owners manual explains it. Basically, you have to be at 30 or so MPH for a certain amount of time to get the outside temp to reset itself. If you're in stop and go traffic, it won't update.
Tech Contributor
Joined: Oct 1999
Posts: 41,037
Likes: 9,798
From: Charlotte, NC (formerly Endicott, NY)
Safety Car
Joined: Oct 2003
Posts: 4,024
Likes: 13
From: Loveland CO to Central Coast CA
"...There is a sensor located behind the front bumper.
This sensor reads the outside air temperature and
helps to maintain the temperature inside the vehicle.
Any cover on the front of the vehicle could give a
false reading in the temperature.
If the outside temperature goes up, the displayed
temperature will not change until:
• The vehicle’s speed is above 12 mph (19 km/h) for
five minutes.
• The vehicle’s speed is above 32 mph (52 km/h) for
two and a half minutes.These delays prevent false readings. If the temperature
goes down, the outside temperature will be shown
when you start the vehicle. If it has been turned off for
less than three hours, the temperature will be recalled
from the previous vehicle operation."
The above is from pg 3-29 in the 2009 owners manual: http://www.gmpartshouse.com/download...09corvette.pdf
This sensor reads the outside air temperature and
helps to maintain the temperature inside the vehicle.
Any cover on the front of the vehicle could give a
false reading in the temperature.
If the outside temperature goes up, the displayed
temperature will not change until:
• The vehicle’s speed is above 12 mph (19 km/h) for
five minutes.
• The vehicle’s speed is above 32 mph (52 km/h) for
two and a half minutes.These delays prevent false readings. If the temperature
goes down, the outside temperature will be shown
when you start the vehicle. If it has been turned off for
less than three hours, the temperature will be recalled
from the previous vehicle operation."
The above is from pg 3-29 in the 2009 owners manual: http://www.gmpartshouse.com/download...09corvette.pdf
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
To update the outside temperature immediately, push the following 3 buttons on the A/C controls simultaneously:
fan speed, windshield defrost, rear window defrost.
This sequence is NOT in the manual, AFAIK.
fan speed, windshield defrost, rear window defrost.
This sequence is NOT in the manual, AFAIK.
Pro
Joined: Mar 2010
Posts: 690
Likes: 1
From: Wisconsin
Instructor
Joined: Dec 2008
Posts: 144
Likes: 0
From: Weatherford Okla
temp sensor
Yes, it works. I'll tell you something my gm friend to me about this subject. Our o/s temp sensor failed and it would read waaay to high, like 120 degrees when it was only 90 outside. I made the comment to him that it was not a big deal if it didn't get fixed. I mean, you know, we lived without those thing for years and years. He said, well, it might be a big deal. If it had failed on the low side and registered below 50 degrees your A/C wouldn't work. Needless to say, I got busy and changed it that day.
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Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
Using the 3 buttons at the same time is representative of what temperature?
Pro
Joined: Mar 2010
Posts: 690
Likes: 1
From: Wisconsin
Yes, it works. I'll tell you something my gm friend to me about this subject. Our o/s temp sensor failed and it would read waaay to high, like 120 degrees when it was only 90 outside. I made the comment to him that it was not a big deal if it didn't get fixed. I mean, you know, we lived without those thing for years and years. He said, well, it might be a big deal. If it had failed on the low side and registered below 50 degrees your A/C wouldn't work. Needless to say, I got busy and changed it that day.
Cool, thanks for the info. It will come in handy. That would suck if the A/C would not work because of the temp sensor.
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
It's the actual temperature that the sensor under the hood near the radiator is reading. It's the temperature you usually will see in the middle of the climate control window. Granted, it will probably go down once the car has been driven enough to cool things off in that area under the hood.
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
It's the actual temperature that the sensor under the hood near the radiator is reading. It's the temperature you usually will see in the middle of the climate control window. Granted, it will probably go down once the car has been driven enough to cool things off in that area under the hood.
ptmosphere?
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
Team Owner
Joined: Mar 2008
Posts: 21,502
Likes: 461
From: Southern Utah
Yup, that's why the system is set to delay until the car has been moving for a while. Push and hold the first, second and fourth buttons from the right simultaneously and you get the actual sensor temp immediately. On a hot day after driving, that could be very much higher than the outside temp.
Team Owner
Joined: Dec 2002
Posts: 32,074
Likes: 296
From: San Francisco CA
Yup, that's why the system is set to delay until the car has been moving for a while. Push and hold the first, second and fourth buttons from the right simultaneously and you get the actual sensor temp immediately. On a hot day after driving, that could be very much higher than the outside temp.
yeap people can't believe that's the real temperature
