This lever can be found on the Right side of the steering wheel.
Follow these steps to turn it on:
Push the lever up lightly (slow intervals)
Push and hold the lever up for 2 seconds (fast intervals)
Follow these steps to turn it off:
Push it back down to its original position
To activate the wiper at the back, turn the switch on the right side of the lever up once. Remember to switch this off once you are done.
To spray the water jet onto the windscreen, pull the same lever towards you.