Pretty certain it comes on when the button is pressed and not to do with external temperature. If i turn my one on it will give a “heat haze” effect once it is up to temperature at any time of the year.
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Volvo XC60 SE LUX NAV D4 VEA GT MY16 - Osmium Grey, Family Pack, Winter Pack, Front Parking Sensors & Tempa Spare Wheel
Gone but not forgotten: 2006-2015 Volvo V50 2.0D SE MY06 - 46.7 MPG
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