The wiper lever can be found on the right side of your steering wheel.
For slow intervals: Push the lever up once.
For fast intervals: Push the lever up twice.
For very fast intervals: Push the lever up thrice.
To turn off the wipers: Push the lever down to its original position.
To turn on jet spray: Pull the lever towards you.
Note: The Polestar 2 comes with an automatic wiper feature which turns itself on if your windscreen detects rain. To turn on the automatic wiper feature, press the button as shown in the photo. A wiper icon will appear on your dashboard.