JEEP GRAND CHEROKEE TRAILHAWK 2017 Manual Online

Windshield Washer Operation
To use the washer, push on the end of the lever (toward the
steering wheel) and hold while spray is desired. If the lever
is pushed while in the intermittent setting, the wipers will
turn on and operate for several wipe cycles after the end of
the lever is released, and then resume the intermittent
interval previously selected.If the end of the lever is pushed while the wipers are in the
off position, the wipers will operate for several wipe cycles,
then turn off.