outside air temperature

[guest3884]

Hi all on my way home tonight I noticed my outside air temperature flashed for a  second and stopped the reading was 3 degrease any idea's why thanks john.

[monkeydave]

just to warn you when you start the engine that there could be ice about  sometimes you get a big snowflake if it goes below 3 degrees when driving


what i want to know is where is the probe for the temprature located i know on some cars its in the passenger mirror but i don't know about the jazz

[guest3170]

I believe the sensor is behind the front bumper. I think it has some logic behind it also, but we have 5 months of snow here and it still warns me with the snowflake sign every time I leave the garage

[guest1232]

Mine doesn't always give an ice warning even though the temperature is below 3 degrees, but this seems to be in dry weather, however, when the road surface is damp it gives a warning.

Is this correct? I wondered if there had to be a certain amount of humidity present to trigger the ice warning?

[culzean]

if it is the same as warning on Civic it ONLY gives a warning at 3 degrees,  if it goes below that it doesn't warn you.  I guess that 4 or 3 degrees sometimes does not feel cold enough to people to expect ice, but if it is below that you should kind of know there may be ice.

I have driven 35 miles each way to work every day since it snowed, and the temperature has been below 3 degrees all the time and the ice warning has not appeared once - so much for technology.

I would like it better if it warned you every 5 minutes when it was below 3 degrees.

[chrisc]

Being under the bumper and close to the road can give inaccurate readings.  Yesterday it was sunny and cloudless, but the air temperature was cool, probably about 20 deg.  Yet the temp sensor, reading reflection from the hot tar, told me it was 29 deg.  Within 5 mins of driving around, it dropped to 21 deg which was about right.

[guest3170]

Yep, we have a similar situation here in the cold north... air temps are below zero but road temps climb due to the sunshine. The difference can be five degrees or more: http://alk.tiehallinto.fi/alk/english/tiesaa/

I think the warning is sensible - when the temp display shows negative it's enough for most people to realise it may be icy but people tend not to make that association for the couple of degrees above zero.

Don't think I could live with the "warn every 5 minutes" option during a two hour winter drive at -20

The sensor also seems to remember the last reading of the previous journey and compares it to the first reading of the next journey. In winter if I park in the heated garage I get the warning again next time I go out.  If I park outside in the cold I don't.

[guest1232]

Being under the bumper and close to the road can give inaccurate readings.  Yesterday it was sunny and cloudless, but the air temperature was cool, probably about 20 deg.  Yet the temp sensor, reading reflection from the hot tar, told me it was 29 deg.  Within 5 mins of driving around, it dropped to 21 deg which was about right.

That is due to the retained heat in the panels which will be higher until you start to move and then the ambient temperature takes over. After all, it only needs to be 30 degrees outside to fry an egg on a black body panel, but it isn't really that hot elsewhere.