SUNLOAD Sensor
WARNING: This page is about a different car, the 2020 Jaguar XE and 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
The sunload sensor is installed in the center of the instrument panel upper surface and is powered by a 5 V feed from the HVAC.
The sunload sensor consists of two photoelectric cells that provide the HVAC with inputs of light intensity. One as sensed coming from the left side of the vehicle and one as sensed coming from the right side. The inputs are a measure of the solar heating effect on vehicle occupants. These inputs are used by the HVAC, to adjust blower speed, temperature and air distribution to improve comfort.