500SEC (140.070) V8-5.0L (119.970) (1993)
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Washer Fluid Heater: Description and Operation
The windshield washer fluid reservoir is heated by a heat exchanger connected to the engine cooling circuit. The hoses from the reservoir to the
washer nozzles and the nozzles themselves are electrically heated. A thermoswitch switches on the electrically heated components of the windshield
washer at an outside temperature below 41°F and off again at 59°F.
