Eli5: How does a thermometer on a car work?

Question

I can’t think of a location within the bodywork of a car that would provide accurate data considering wind-chill when it’s moving, excessive heat from either the engine, or stationary in the sun.

In: 242

Answer 1

I remember reading somewhere that there is a set of criteria used when to update the temperature reading displayed on the dash or wherever to avoid super high readings from sitting out in the sun. Something like x number of minutes after the car has been going at a certain speed. I assume the display just shows the last good reading when that criteria isn’t met.