h> Your ambient temperature sensor should be mounted to the verticalh> support in front of the radiator.h>
h> Because of its location, there's complicated logic involved inh> whether the control head uses the temperature it reads from theh> sensor or keeps the old temperature. The logic is intended to noth> allow the heat from the radiator to influence the temperatureh> reading. Unfortunately, I know of nowhere where Hyundai specifiesh> what logic they use for this.
Thanks for the good info (as usual). I will have a look and make sure there
is no debris or anything there.
When I drove off and noticed the constant 60 deg.F reading, it was sitting
on a concrete parking lot in open sun -- a situation that tends to give an
initial false high reading. Normally, after driving off the read temp would
drop to the correct temperature. In this particular case, it was behaving
counter to that.
Have you seen m/any complaints regarding this sensor in your shop?
I can't speak about Hyundai yet because it has been OK so far and I've not
had it during the summer. On my Buick, even on a very hot day, the
temperature would not always show if it is higher than the last reading when
the car was shut down for only a few hours. If I did not use the car all
day, it would usually be on the high side as you note, then comes down after
If the actual temperature was lower, it would come down to the correct
reading very shortly after the car is moving. If the actual temperature is
higher, I'd have to drive for at least 3 miles before the reading would go
up. It is possible to take a couple of short trips, say 1 to 1.5 miles, and
have the reading the same as the earlier low reading. The reason for the
lag to increase is so that sitting in traffic the sensor is not quickly
fooled by engine heat.
The there was the day I was listening to the radio station. 101.0 FM at 1:01
on a hot summer afternoon when the temperature was 101 degrees. I thought
the computer just went crazy for that moment.
Haven't had any complaints with Tiburon. I believe there are TSBs about
inaccuracy on Sonata, Azera, and Santa Fe, however.
What may have been happening with your car is that the control unit
thought the higher actual temperature was influenced by the radiator, so
it kept the cooler temperature instead of changing.
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