Engine Block Heater (If Equipped) - How Does the Engine Block Heater Work

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How Does the Engine Block Heater Work

The engine block heater warms the engine coolant. This allows the climate control system to quickly respond. The equipment includes a heater element installed in the engine block and a wire harness. You can connect the system to a grounded 220-240 volt AC electrical source.

Note: The heater is most effective when outdoor temperatures are below 0 °F (-18 °C).

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2021 Bronco Owner's Manual