The sensor detects the temperature outside the vehicle.
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If the vehicle has been stationary, the sensor reading may be higher than the actual temperature.
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When the ambient temperature is between –5 °C and +2 °C (23 °F and 36 °F), a snowflake symbol will illuminate to alert the driver of the risk of slippery conditions.
The symbol is also temporarily lit in the head-up display* if the vehicle is equipped with one.
Change the measurement standard for the temperature sensor etc. via system settings in the center display's Top view.