Washer Jet Heaters
WARNING: This page is about a different car, the 2006 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.
The ATC module automatically energizes the washer jets relay, on the central junction box (CJB), when the ignition is on and the ambient temperature is less than 3°C (37°F). If the ambient temperature increases to more than 6°C (43°F), the ATC module de-energizes the washer jets relay.