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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1602 (Wipers And Washers (Except Electric)) >> Description And Operation >> Wipers and Washers - System Operation and Component Description >> Rear Window Washer

Rear Window Washer

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

When the wiper/washer switch is pushed away from the driver, the SASM sends the request to the BCM through the LIN. The BCM energizes the rear washer relay (internal to the BCM) and activates the rear window wiper motor. When the BCM activates the rear window wash relay, voltage is provided to the washer pump, directing washer fluid to the rear window. When the switch is released, the rear window wiper motor continues to operate for 3 additional wipes and then turns off.

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