Operation CHARM: Car repair manuals for everyone.

Delay Mode

The delay mode is used to prevent the vehicle occupant's breath from fogging the windshield when the outside temperature is low and the engine is cold. The heater-A/C control will set the doors so that airflow is directed to the windshield with low blower operation. The system will stay in the delay mode until engine coolant temperature reaches 49°C (120°F) or after four minutes whenever comes first. The heater-A/C control then operate normally in the selected mode