Automatic Climate Control

The request for rear defrost is received by the BCM over serial data (class II). The BCM will energize the relay which send voltage to the rear defrost grid

The first time in an ignition cycle that the rear defrost is activated, rear defrost will remain On for 15 minutes or until the ignition switch is turned OFF. If rear defrost is activated again during the same ignition cycle, rear defrost will remain On for 7.5 minutes or until the ignition switch is turned Off.