For emergenciesFor emergencies  - Mitsubishi Carisma Owner's Manual - Mitsubishi Carisma

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Performance
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Rear window wiper and washer switch (Hatchback)
The rear window wiper and washer switch can be operated with the ignition switch at the “ON” or “ACC” position. Rear window wiper Turn the knob, and the rear window wiper will operate. ...

Precautions to observe when using wipers and washers
(1) If the moving wipers become blocked by ice or other deposits on the glass, the motor may burn out even if the wiper switch is turned to OFF. If obstruction occurs, park your vehicle in a safe ...