See also:

Windshield wiper and washer switches
The wiper operates only when the ignition switch is in the “ON” or “Acc” position. ...

Acc
In this position the electrical accessories (audio, accessory power outlet, etc.) can be used. ...

Using the cover
To extend the cover, pull the end of the cover out of the housing, then insert its hooks into the catches as shown. To rewind it, unhook it from the catches and it will rewind automatically. You ...