The sensor detects the temperature outside the vehicle.
If the vehicle has been stationary, the sensor reading may be higher than the actual temperature.
When the ambient temperature is between -5 °C and +2 °C (23 and 36 °F), a snowflake symbol will be displayed in the instrument panel as a warning for possible slippery conditions.
The snowflake symbol is also temporarily lit in the head-up display if the vehicle is equipped with one.
To change the measurement standard for the temperature sensor and other readings, go to system settings in the center display's Top view.