XK-8 Coupe (X100) V8-4.0L (AJ27) (1999)
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Auxiliary Water Pump: Description and Operation
Auxiliary Water Pump
Heater System Components - XK Series
Located in the same area as the water valve, the water pump continually circulates coolant through the heater matrix except when the conditions below
apply:
The engine coolant is below 16 °C.
The ignition is OFF.
Under engine stall conditions, when ignition is ON.
Control panel OFF
