Outside Temp Gauge Going Bonkers - '03 EX V-6

In the last few days I have noticed that the outside temperature gauge
in our 2003 EX V-6 w/nav is reading way too high. This morning, when
the outside temperature was 29F, even after 10 minutes of driving at
55 mph the gauge still read 49F. When we first bought the car, the
temp gauge would stabilize at the correct temp very quickly after
starting down the road. Strangely, after we drive it for a while, it
seems to come back to the approximate outside temp. Maybe it was just
the outside temp catching up with the gauge reading. Anyone else have
a problem with the outside temp gauge?

Dick
Remove 33 from address

 

It never shows instantaneous temperature, but some type of rolling average.
What was temp the last time it had been driven? It doesn't update until
above a minimum speed, etc. Someone once posted the algorithm it uses.

Search archives of this group.

 

Running 55 on a highway should be fast enough to update. Note that
this car is 7 months old, and has never exhibited this kind of
behavior before.

Dick

 

From: (Dick)
wrote:

Even though this feature is basically inconsequential to the
driveability of the car, I must confess this would drive me nuts as I
LOVE having the outside temp gauge on my Lexus. Something about knowing
what the outside temperature is floats my boat.

If it persists, and it were me, I'd be taking it to the dealer for a
fix.

 

Even though this feature is basically inconsequential to the

Got a Lexus for the outside temp? What a moron!





"If life were like a box of chocolates, everyone would be black and expire in 2
years."

 

Here's how it's supposed to work, from Honda ServiceNews February 2003.

Outside Temperature Indicator Logic: '03 Accord
On '03 Accord EXs with leather and '03 Accord EX V6s, the outside
temperature indicator keeps bogus readings to a minimum by delaying the
refreshing of the display until you're driving the vehicle faster than 19
mph, and by limiting the display change rate.

Here's how the logic works:
When you turn the ignition switch to ON (II):
.. If the engine coolant temperature is less than 60°C (140°F), the display
shows the current outside air temperature.
.. If the engine coolant temperature is greater than 60°C (140°F), the
display shows the temperature that was stored in memory when you turned the
switch to LOCK (0). The display doesn't refresh from this reading until you
drive the vehicle faster than 19 mph for at least 90 seconds. Once this
criteria is met:
.. If the measured outside air temperature is greater than the displayed
temperature, the displayed temperature rises 1°C per minute (about 1.8°F)
until the two temperatures match.
.. If the measured outside air temperature is less than the displayed
temperature, the displayed temperature drops to match the measured outside
air temperature after about 20 seconds.

 

As far as I remember, it did read the garage temperature.

I drove 55 mph for at least five miles.

The outside temperature was < 30F. The displayed temperature stayed
near 50F for at least a half hour. After the car sat in a parking lot
while we were shopping, and the ambient temperature did rise to around
50F, then the temp gauge agreed with the outside temp. I would guess
it takes at least an hour to stabilize at the correct temperature.

Thanks for the information. It will give me something to use when I
talk to the dealer. Not looking forward to that as the dealer is 100
miles away, and the gauge will not be malfunctioning when I get there.
They will want it overnight, which means hotel expenses, etc. I guess
I will just put up with it for a while.

Dick

 

You do realize that by having your head _so far_ up your ass, it cuts
off the necessary air needed for your brain to think. At all.

Unless, of course, your comments are getting their life from the noxious
farts you're giving your brain. That could explain a lot about you,
asshole.