Heated Rear Window (HRW)
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 HVAC controls the operation of an electrical heater element to rapidly defrost/demist the rear window. For additional information, Refer to: GLASS, FRAMES AND MECHANISMS