Jeep 2006 Wrangler - Manual (Page 140)

Rear Window Wiper/Washer
To utilize the rear wiper, press the switch to the
first detent. To activate the rear washer, depress the
switch to the second detent. The washer will
continue to spray as long as the switch is held. The switch
will return to the wiper mode when released. To turn the
rear wiper off, lift the bottom of the switch.
Rear Wiper/Washer Switch
140 UNDERSTANDING THE FEATURES OF YOUR VEHICLE