Rear

The rear windshield wiper and washers can be operated when the ignition switch is in the RUN position.

If equipped with Manual Temperature Controls (MTC), the rear wiper/washer switch is integral to the HVAC control unit. It replaces what was formerly the ON/OFF switch. If equipped with Automatic Temperature Controls (ATC), the rear wiper/washer switch is located on the accessory switch panel in the center stack of the instrument panel.

When rear wiper operation is required, the BCM will provide ignition ON voltage to the rear wiper motor (Export and ATC equipped vehicles only). When the wiper switch is turned OFF, the BCM provides circuit ground to operate the motor until the wipe cycle is complete and the wiper arm returns to the base of the rear window.

Switch only offers an intermittent rear wiper mode. The wiper motor will cycle every 7 seconds. The intermittent delay time is also adjusted based upon vehicle speed. With the vehicle traveling greater than 50 mph, the cycle changes to every 5 seconds.

When rear washer is requested by depressing and holding down the switch, the BCM then provides a ground for the washer motor. Until the switch is released, the motor will be in a continuous wipe mode, then return to an intermittent wipe mode.