Jeep 2013 Grand Cherokee SRT - Owner Manual - Manual (Page 208)

Intermittent Wiper System
Use one of the four intermittent wiper settings when
weather conditions make a single wiping cycle, with a
variable delay between cycles, desirable. At driving
speeds above 10 mph (16 km/h), the delay can be
regulated from a maximum of approximately 18 seconds
between cycles (first detent), to a cycle every one second
(fourth detent).
NOTE: If the vehicle is moving less than 10 mph
(16 km/h), delay times will be doubled.
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
Intermittent Wiper Operation
206 UNDERSTANDING THE FEATURES OF YOUR VEHICLE