Other information:
The engine block heater warms the engine, and permits quicker starts in cold
weather. Connect the cord to a standard 110-115 Volt AC electrical outlet with a
grounded, three-wire extension cord.
The engine block heater must be plugged in at least one hour to have an adequate
warming effect on the engine...
Automatic Operation
Push the AUTO button on the faceplate, or the AUTO button on the touchscreen
on the Automatic Temperature Control (ATC) Panel.
Next, adjust the temperature that you would like the system to maintain
by adjusting the driver and passenger temperature control buttons...