Chrysler 2004 PT Cruiser - Manual (Page 174)

CAUTION!
To avoid damaging the electrical conductors, do not
use scrapers, sharp instruments, or abrasive window
cleaners on the interior surface of the rear window.
Labels can be peeled off after soaking with warm
water.
Rear Wiper/Washer Switch
A push-button at the center of the instrument panel,
below the radio, turns the rear wiper ON or OFF. When
this switch is pressed the rear wiper will operate at a
fixed interval of about 4 seconds between wipes.
Press and hold the switch as long as spray is
desired. If the switch is depressed while the wiper
is on, the wiper will operate for a few seconds after
the switch is released then resume the previously set
mode of intermittent wiper.
174 UNDERSTANDING YOUR INSTRUMENT PANEL