Does anyone else with a 2005 have a problem with the vehicle taking 2 miles or more to adjust to the correct outside temperture. I have driven it for short distances (like 1 mi.) for multiple times within the time frame of 1 hour and it still registers the temperature it was the first time I drove it earlier in the day. The dealer prints me out a bulletin that they say it works that way. (though I don't get that from reading the bulletin) i have not seen where anyone else is having that problem. i had a 2002 that worked fine. Can anyone else tell me if they are having a similar problem? In some cases if the outside temp earlier in the day was 35 to 40 degrees the air conditioner will not work though the actual temperture later in the day may have gotten up to 70. If i make a few short trips the air does not work. Some times it takes up to five miles of driving for the outside temp sensor to start registering properly.

 

It is normal. The delay is intentional. It isn't just a thermometer like in some other cars. The climate control system uses the OAT to regulate the temperature and fan speed of the climate control system. It delays so that it can get a valid reading rather than react to a false reading.


Here is the excerpt from your owners manual, Section 3, pages 27-28

There is also 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 10 mph (16 km/h)
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.

 

I guess I have made a fool out of myself to the dealership. I have asked for it to be fixed numerous times and could not believe that GM/Corvette would make such a change. My 2002 worked wonderful. Never had to go without a/c and always knew what the outside temp was. I hardly ever drive my car for longer trips than 1 to 2 miles during the mid day, and you can see how (with the way it now works) the a/c or the the temp is always wrong during times when the orig temp is less than 40 degrees. My good friend owns and operates a BMW repair shop and he could not believe this is the way it was supposed to work.
Well I will go apologize for my ranting at the dealership. I appreciate your information. I had no trouble with my 2002 but with this one I have noise from the rear end, recall on the top from seperation, and the sensor that takes miles to adjust. $60,000 cars (in my humble opinion) should have better technology. I guess BMW's have their issues too.
I shut up now. thanks again for your reply

 

Although not required to get the A/C to run, it is used by the A/C (eventually) to set the interior temp..

Sounds like good engineering to me.

 

That's a bummer. You might consider checking here first if you suspect you have a problem. There are many things different about the C6 from that of the C5. The electronics for the climate control vary from the C5 in that they use readings from both an inside air temperature and an outside air temperature to regulate the climate control functions. If you want to use your AC you need to disable the Auto function and you can regain manual control of the temperature and fan settings.

 

Please don't think I am trying to be cute but it seems to me that Most of what I get is false readings, unless I go on longer trips. Would it have been better to use this feature internally and only present the reading when it was accurate. After all the only reason I can see for displaying it is to let humans know what the outside temperature is. (I am a programmer by profession and to put out false data is usually a bad idea) Put the word calculatiing........ I know there is not enough room but you get my point.

 

I understand your point completely. Had it not specifically stated in the manual that this was the intended operation of the display I would agree with it as well.

 

Something like "XX", "NA" or even just leaving the characters blank would seem appropriate.

 

Actually, in looking back at my 1997 owners manual it would seem that they operated in a similar fashion. Shorter durations and speeds were required to activate the display but they still displayed the old information until moving for a period of time.


Outside Air Temperature Sensor
This sensor is located in the air intake under the front
bumper of the vehicle. Information from this sensor
is used for the outside air temperature readings
shown on thed igital display for the automatic
climate control system.

If the outside temperature goes up, the displayed
temperature will not change until:
0 The vehicle’s speed is above 20 mph (32 km/h)
for one and a half minutes.
The vehicle’s speed is above 45 mph (72 km/h)
for one minute.
These delays help prevent false readings. If the
temperature goes down, the outside temperature
display is updated immediately.
If your vehicle has been turned off for more than three
hours, the current outside temperature will be shown
when you start the vehicle. If it has been turned off for
less than three hours, then the temperature will be recalled
from the previous vehicle operation.

 

talon90,
I think this is my point to the dealership, I had 2002 but it did not take as long to update. (it may have worked this way but without the extreme delays) It updated a lot sooner and I never had a problem with a/c, so when I got the 2005 I just knew I had a problem because of the increased delay. I was more comparing the difference in time to update and not ready to accept the longer time to update. I have had times it took up to 5 miles to update. A question I would like to ask the Corvette techs is what is wrong with using the current temp? I would say in most cases it is more accurate than the last time you drove the car, what advantage does that give the vehicle. I come to work temp is 35 degrees, I go to lunch then it is 65 degrees, why use 35? If I drive frequently, I get out of vehicle temp is 90 degrees I get back in 1 hour later the temp is still 90 degrees but the vehicle thinks because of inflated false reading it is 100 degrees, who cares I need a/c immediately. I guess they could shed some light on it because they have done their home work but I can't see it. Let say the temp goes down well it says it updates down immediately so why not update upwards immediately. What does this mean "Any cover on the front of the vehicle could give a false reading in the temperature" I have no cover and still get a false reading.

 

Okay I will admit it, I am trying to say the outside temp should work like it does in 90 percent of other vehicles. I am used to having stuff working at a standard. If Chevy (Corvette )has something great about using outside temp to do some magic in the inner workings of the vechicle, then put another $3 sensor on the car that will start adjusting immediately as you ride so we can see some evidence it is working. Put the readout of the other sensor where they put the oil temp reading or something. Yeah I am whining. I guess I should have done it here instead of taking it out on the dealership. Just handing me the printout infuriated me. I know how it works (2002 vette) but I was wrong.