Jeep 2010 Liberty - Owner Manual - Manual (Page 159)

If you activate the washer while the wiper control is in
the delay range, the wipers will operate in low-speed for
two wipe cycles after releasing the lever and then resume
the intermittent interval previously selected.
If you activate the washer while the wiper control is in
the off position, the wipers will operate for two wipe
cycles and then turn off.
Mist Feature
Push downward on the windshield wiper/washer con-
trol lever to activate a single wipe cycle to clear the
windshield of road mist or spray from a passing vehicle.
The wipers will continue to operate until you release the
lever.
Mist Control
158 UNDERSTANDING THE FEATURES OF YOUR VEHICLE