[s-cars] Re: outside temp sensor MIA - WTF?

[Bob Rossato]

There is a fresh air intake duct temp sensor, and a fresh air blower ambient
temp sensor in the windshield cowling area.  I think the system compares the
readings from the bumper mounted sensor and the intake temp sensor.  Strange
though that the outside temp display would all of a sudden start reading
properly without a sensor there.  Have you checked the climate control
diagnostics?  It should tell you if you have a fault with any of the other
sensors.

Bob

> -----Original Message-----
> From: s-car-list-admin at audifans.com
> [mailto:s-car-list-admin at audifans.com]On Behalf Of Thompson
> Sent: Sunday, March 30, 2003 9:11 AM
> To: Bob Rossato
> Cc: s-car-list at audifans.com
> Subject: [s-cars] Re: outside temp sensor MIA - WTF?
>
>
> *This message was transferred with a trial version of CommuniGate(tm) Pro*
>
>
> Bob and gruppe,
>
> I found my problem. The wire and plug are there but the sensor is MIA!
> Last night we joined some friends for an early season BBQ and I let
> Donna drive der neu S6. Being an S4 driver herself, she immediately
> noticed that I was "wrong" and should have my climate control system
> set to "Auto". "Oh yeah, this is the right way, it will do it all
> itself - just set the temp."  "Alright honey I said..."
>
> Well, I can tell you that the outside temp reading said -40 below again
> right when we started to drive, and since she switched it over to 67
> deg on Auto that S6 did every thing in it's heating powers to make the
> car 67 deg thinking that it was -40 below outside! Holygesh, the heater
> was on max! Dropping it to LO fixed it, but was then cold. The outside
> temp sensor IS somehow connected into the climate control system. We
> figured this out quickly enough and I started to fritz around with
> trying to make the A/C go on. No go - it still thinks that it is -40
> below outside - why would you need the A/C? Then, the outside temp
> guage started to climb back out of Siberia (after 10 min) and level out
> to a normal +43 deg. Hmmm, just then the A/C snowflake appeared on and
> the system stabilized. I turned off the A/C and everything was still
> good. Inside temps were right.
>
> After finding a MIA front sensor this morning, what I don't understand
> is how could the whole system finally do a sub zero drop, then come
> back to normal? There must be another sensor somewhere lurking in
> there. Maybe I'll ask the hidden pollen filter where it is...
>
> Thompson
>
> On Wednesday, March 26, 2003, at 10:47  PM, Bob Rossato wrote:
>
> > *This message was transferred with a trial version of CommuniGate(tm)
> > Pro*
> >> I can't for the life of me find the outside temp sensor in the front
> >> anywhere. Give me some pointers as to BTDTs.
> >
> > The temp sensor is mounted pretty much smack dab in the center of the
> > front
> > bumper.  Open the hood, stick your hand behind the bumper and reach
> > towards
> > the front.  You should feel it there, though may not necessarily be
> > able to
> > see it.  If you look through the center bumper grille you should see it
> > though.  As I recall, a -40 reading is a sign of a disconnected, or
> > maybe
> > failed sensor,
> >
> > Bob
> >
> >
>
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