How accurate is the in dash thermometer?


Got in this afternoon and it said 44 degrees!

and this was with the tinted rear window towards the sun too!

Mine read 35 degrees today

Phew...hurray for A/C

Sorry, I don't know how accurate the thermometer is

as far as i know it takes the temperature from the outside
somewhere in the engine bay (correct me if im wrong)

i only got 33 degrees today

my office (clubs office should i say) has a flat roof which is part of an extension to the house... it must be 40 in here right now.. boiling hot!

today has to be the hotetst day so far!

I always compare mine with the big public ones and its usually about the same or one deg higher
so based on that I think its acurate-ish

Mine's pretty damn accurate methinks. The sensor is near the front to the underside of the bumper if I remember correctly.

Was stuck indoors all day tho didn't even get a lunch break. ...

The climate reading isn't all that accurate when the car has been parked for while cos of radiant heat from the road etc, once your moving they are pretty accurate to maybe +-1 or 2 deg's.

For info mine read 27 Deg C when I keyed on tonight leaving work, once moving reading dropped to 25 Deg C

Was getting a consistent 31° on the I.O.W. today

Mine seems to be pretty ok. It annoys me though when you first get in and its been standing for ages, the temp is high and takes ages to drop.

I wish they had used a higher sampling of the sensor! That way you could avoid the fans going off on one when they don't need to. Especially painful at night! (early eve should I say)

yeah they do read more when the car been parked in the sun (but most other cars do that too)

however, it was 31 degrees in the middle of the day yesterday so i guess it was right about one thing, it was HOT!

[quote name='kev dood' date='Jul 15 2003, 09:53 AM']I wish they had used a higher sampling of the sensor! That way you could avoid the fans going off on one when they don't need to. Especially painful at night! (early eve should I say)[/quote]
what fans are you talking about??????? if you mean the A/C condensor fan or the radiator fan then these are not linked to the outside temperature sensor.

I always just ignore what it says when I first get in the car as it will drop as soon as you drive away.

ok test time

going to get the car out of the garage in a sec

the outside temp at the mo is .....
24.8 degrees c
53 percent humidity
1015 mb
and its 11:21

21degrees c in garage

21 degrees
in car

25.2 in porch

moved sensor to car

temp readout for car is 21

temp readout on thermometer is 26.1

temp readout for car is 22

temp readout on thermometer is 28.5

temp readout for car is 22

temp readout on thermometer is 28.6

temp readout for car is 22

temp readout on thermometer is 27.9

going for a drive will report back

temp readout for car is 22

temp readout on thermometer is 28.4

going now

When I park down at the big supermarket for about half an hour, my car thermometer reads within one degree F of the thermometer on the big ole siign out by the big highway.

Back from a very nice lunch, and.......

temp readout for car is 27

temp readout on thermometer is 29.9

[quote name='wildrnes' date='Jul 15 2003, 11:56 AM']temp readout for car is 22

temp readout on thermometer is 28.4

going now[/quote]
mat where are you sticking that thermometer

this is an experiment mate

temp readout for car is 27

temp readout on thermometer is 29.9

so there you go
either mine is buggered or

[quote name='wildrnes' date='Jul 15 2003, 02:31 PM']so there you go
either mine is buggered or[/quote]
or................ what?

there is a temperal distortion around my car brought about by the use of meguires which creates what can only be discribed as a negative termerature field or a 'cool field'
so either my themometer isnt working or....

my car is cooler than yours

oh how I laughed!

Anyway, by fans I meant the blower fans that circulate the air. I have my system on auto all the time.

Also it does take a couple of mins for the outside temp to drop after driving away.

Any, lets not forget, it measures the outside temp, not inside so you must have been driving along with the thermometer outside the car (but with no wind on it!) otherwise experiment is null and void!!

[quote name='kev dood' date='Jul 15 2003, 04:49 PM']Any, lets not forget, it measures the outside temp, not inside so you must have been driving along with the thermometer outside the car (but with no wind on it!) otherwise experiment is null and void!![/quote]
The thermometer is static in the porch - constant readout of all ambient weather features

Ahhhhhh, thought you meant you were driving round with it!!

Mind you (and I don't know what your porch looks like) but wouldn't that upp the temp, if its glass enclosed or something. If its brick then maybe its cooler in there than outside??

Anyway, how accurate does it need to be, its only an indicator!

to make it accurate the thermometer will have to undergo the same trials as the cars meter is subjected to, you should also take the readings from the same point

i.e. FRONT LOWER GRILL RHS


are you using a houshold meter or medical grade one

[img]http://www.lexusownersclub.com/gallery/albums/Misc/Loz_crx_005.sized.jpg[/img]

porch in background

no glass

as scientific as i could make it

i moved the sensor so it was next to the car

i would hope that the themometers would be accurate the same way the mpg guage the speedo and others are accurate

how much do we pay for these?

so are you driving the car and taking a reading.......

remember also the cars pickup is made of black plastic, this will retain heat longer, it is also situated just in front of the aircon comdenser....

[quote name='Supracharged-IS340' date='Jul 16 2003, 10:23 AM']so are you driving the car and taking a reading.......

remember also the cars pickup is made of black plastic, this will retain heat longer, it is also situated just in front of the aircon comdenser....[/quote]
car was stationary
themometer is stationary

went for a drive took temp when i arrived back at the house

did the thermomometer go for a drive aswell

dunno didnt ask it
might have
i mean the keys are in the house
it could have

nice house mate.

Yeah see your point - I was surprised how accurate the mileage gauge is.