Rear Window Wiper

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

When the wiper/washer switch is in the INT 1 or INT 2 (continuous wipe) position, the SCCM sends the request to the windshield wiper motor through the LIN. When the request is received, the windshield wiper motor momentarily supplies ground to the rear window wiper motor, activating the motor. The position of the wiper/washer switch determines how many times per minute the windshield wiper motor provides ground to activate the rear window wiper motor.

The rear window wiper motor is self-parking.

Rear Window Washer

When the rear window washer switch is activated, the SCCM sends the request to the windshield wiper motor through the LIN. The windshield wiper motor energizes the rear washer relay (located in the BJB) and activates the rear window wiper motor. When the windshield wiper motor 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.

Ground for the washer pump is provided through the windshield washer relay within the windshield wiper motor.