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Hi,

I notice when driving my car around on warmer days (in this case - 78-85 degrees) the ambient temperature sensor:

1) Seems to be off by 5-6 degrees v.s. what my phone's weather service (weather.com) says. This is when driving the car around for a while (at least 10-15 minutes) and then checking the cars temperature v.s. weather.com.
2) When the car is parked in the sun, and I drive it around, it seems very slow to react and takes a while to drop.

Is this a common experience or do I have a bad sensor?
 

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Nope that's normal. The sensors are very sensitive to heat. Alternatively, it may be more accurate than your phone, which is just getting data from wherever the weather service is monitoring temperature. If you're parked the temp sensor will be artificially inflated, but once you start driving it will be more accurate after a bit.

You'll find that if you park in the shade the temp sensor will be more accurate.
 
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