Heated Washer System Operation

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

The intent of the Heated Washer Fluid Feature is to automatically clear the windshield of snow or ice upon activation. The system may also be used to improve the bug clearing performance of the wash feature under summer driving conditions. When the heated wash switch is pressed, the driver information center (DIC) will display the HEATING WASH FLUID WASH WIPES PENDING message for 2 seconds and the heater assembly heats the wash fluid to approximately 70°C (160°F). The total duration of the initial heat up cycle may take up to 45 seconds. Once the proper temperature is reached, the heater assembly will request the body control module (BCM) to activate the windshield wash cycle. The heater assembly will maintain an active wash request until the wash fluid temperature drops to 40° C when the wash cycle request will be de-activated allowing the wash fluid to heat up again. The fluid heating and wash application will automatically be repeated 3 more times. Upon completion of the 4 wash cycles, the system will transition to off. The automatic heated wash mode may be terminated at any time by pressing the heated washer fluid switch. The DIC will then display the HEATED WASHER FLUID WASHER SYSTEM OFF message.