I found these answers on the "internets"
Where is the temp sensor on our jeeps?
"You can see it through the two drivers side grille openings. There is a square tube that runs across the width of the jeep, in front of the radiator. It's a little black sensor that is affixed to that square tube with a plastic push-screw.
Alright... My jeep needs servicing lol. It's easily 90 degrees in Abilene TX and my dash reads 72.. She must be dreaming :')
"Here is the ambient temperature sensor behavior for the JK:
Vehicle with the key off for more than 4 hours...The CCN will update the ambient temperature reading immediately.
Vehicle with key off for more than 2 hours but less than 4 hours....The CCN will update the ambient temperature reading immediately after vehicle reaches above 20 mph (with no duration constraint) and will update every 500 ms thereafter.
Vehicle with the key off for less than 2 hours...The CCN will display the last temperature reading (which is stored in memory) just prior to the ignition being turned off. The CCN will not update the value in the display until the car has been driven at 20 MPH or above for 3 consecutive minutes. If the vehicles speed and drive time does meet the criteria the CCN will continue to display the stored value until the criteria is met. Once the criteria is met, then the CCN will update the display every 500 ms based off of the ambient temperature sensor output."
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