300E (124.030) L6-3.0L (103.983) (1986)
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Auxiliary Water Pump: Description and Operation
Recirculation (Auxiliary) Coolant Pump Location
PURPOSE
The recirculating (auxiliary) coolant pump, which is located at the lower right side of the engine compartment, is arranged in the return circuit to provide
constant coolant flow through the heat exchanger during heating operations.
OPERATION
When a heating function is selected, the Climate control unit energizes the recirculating pump continuously. When the control unit determines that
heating is no longer required the pump is switched off.
