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Ambient Temp Sensor

Printed From: The W8 forum
Category: Problems, Tips and Tricks About the W8
Forum Name: Electronics
Forum Discription: Discussions about electronical parts of the W8, such as power windows, diagnosis, navigation, etc...
URL: http://www.w8forum.dk/forum_posts.asp?TID=97
Printed Date: 19-Oct-2018 at 22:49
Software Version: Web Wiz Forums 9.56a - http://www.webwizforums.com


Topic: Ambient Temp Sensor
Posted By: squish
Subject: Ambient Temp Sensor
Date Posted: 09-Jan-2007 at 23:24
why does my ambient temp display consistantly read 10-12 degrees higher than it should? my dealership said it read normal, but that's BS. my previous VWs (and wife's B6) are only within a couple of degrees of what i hear on the local weather reports.

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2005 V70 R
2007 2.0T 6MT



Replies:
Posted By: B5crazy
Date Posted: 10-Jan-2007 at 16:49
Well I'm glad to see someone else has this problem. I'm just not sure I want to wast my time and the dealer's to fix it.

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2004 W8 Variant 6MT Pacific Blue/Grey
1992 Cabriolet
2012 Golf R 4dr CW

http://mysite.verizon.net/b5crazy/


Posted By: squish
Date Posted: 16-Jan-2007 at 22:22
So everyone's temp sensor reads correctly (or close enough)? Based on the lack of responses, I will make the assumption that something in my ambient sensor system has failed.

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2005 V70 R
2007 2.0T 6MT


Posted By: B5crazy
Date Posted: 16-Jan-2007 at 23:06
Let me know what happens as mine is off too.

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2004 W8 Variant 6MT Pacific Blue/Grey
1992 Cabriolet
2012 Golf R 4dr CW

http://mysite.verizon.net/b5crazy/


Posted By: fitzski
Date Posted: 17-Jan-2007 at 15:53
Does your Climatronic display the same temp as the FIS (center cluster)?

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2003 Passat W8 Variant
(Pacific Blue, Tan, 6sp)


Posted By: B5crazy
Date Posted: 17-Jan-2007 at 16:31
Yes it does.

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2004 W8 Variant 6MT Pacific Blue/Grey
1992 Cabriolet
2012 Golf R 4dr CW

http://mysite.verizon.net/b5crazy/


Posted By: squish
Date Posted: 17-Jan-2007 at 18:24
yes, and that's the main reason why i'm annoyed with it. it is difficult to keep the car comfortable inside when the computer thinks it is much warmer outside than it really is

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2005 V70 R
2007 2.0T 6MT


Posted By: spinner
Date Posted: 18-Jan-2007 at 03:59
Actually, mine has kind of the same problem ... but not 10-12 degrees ... Celcius, anyway.

Don't know how much it is off in Fahrenheit, but it's typically 2-3 degrees higher in celcius than other outdoor thermometers. Always thought it was engine heat tricking it into believing it's hotter than it actually is.

And always thought that it had to take a lousy couple of engineers to place the sensor where it would be affected by the cars temperature...

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Posted By: justw8
Date Posted: 19-Jan-2007 at 14:24
Mine usually reads 7 higher than actual temperature also, vw said that was normal.

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justw8
2003 Blue Spirit Tiptronic


Posted By: fitzski
Date Posted: 19-Jan-2007 at 15:23
Do any of you have a VAG-COM? I wonder if any errors are reported.

Also, there is a long list of diagnostic "tricks" that can be done with the Climatronic - I wonder if any could be related to calibration of the outside temperature sensor?

http://istargazer.blogspot.com/2001_12_01_archive.html - http://istargazer.blogspot.com/2001_12_01_archive.html

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2003 Passat W8 Variant
(Pacific Blue, Tan, 6sp)


Posted By: SlimW8
Date Posted: 29-Jan-2007 at 10:48
Mine reads 5-6 degrees F warmer than it should. I vote bad engineering also. The thermometer in the Ford truck I got rid of to buy this car was always right on the money. I'm not sure but I think I actually saw in the owner manual that it was normal for it to be off a little. I could live with 1 or 2 degrees, but 5-6 or 10-12 is too much. They should have calibrated it to read closer or moved the sensor.

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2003 W8 Sedan
Silverstone Gray/Gray
Sport Pkg. (6SP,17"BBS,Susp.)


Posted By: coach_pilot
Date Posted: 30-Jan-2007 at 10:15
I haven't a problem like this with my car.

Usually the temp directly after the engine start is mostly wrong, especially if the engine is warm. It needs some kilometers to bring it in its normal way.

When do you have those differences? Always or just after the start of the engine?

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Posted By: B5crazy
Date Posted: 30-Jan-2007 at 10:25
It is always off by 7-9 degrees F. And always on the high side.

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2004 W8 Variant 6MT Pacific Blue/Grey
1992 Cabriolet
2012 Golf R 4dr CW

http://mysite.verizon.net/b5crazy/


Posted By: squish
Date Posted: 30-Jan-2007 at 19:05
yep, it's high when the engine is warm. but before the car is warm, it reads closely to the correct temp. i've seen the temp sensor. it is two inches from the radiator. that's where the engine heat is exchanged! i'd rather it read low at first...

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2005 V70 R
2007 2.0T 6MT



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