Rear Wiper/Washer — If Equipped
The rotary switch on the center of the windshield wiper/washer lever controls the rear wiper/washer operation.

Rear Wiper/Washer Control
Turn the switch up to the first detent position for intermittent operation and to the second detent for continuous rear wiper operation.
Move the wiper lever toward the instrument panel to activate the rear washer. The washer pump and wiper will continue to operate as long as the lever is held.
NOTE:
As a protective measure, the washer will stop if the switch is held for more than 20 seconds. Once the switch is released, the washer will resume normal operation.
If the rear wiper is operating when the ignition is in the OFF position, the wiper automatically returns to the "park" position. When the vehicle is restarted, the wiper resumes operation from whatever position the switch is set to.
Test yourself
A quick Jeep Wrangler quiz: every answer comes with an explanation and a link to the manual page.