The best way to switch on the wipers of the Vezel is to leave it in the setting as shown in the picture. This lever can be found on the Left side of the steering wheel.
The lever have 3 levels of wipers speed, push down 1 level for low speed, level 2 is mid speed and level 3 will be speed.
There is a turn switch that allows you to toggle ON/OFF for the rear wipers which goes from low speed to high speed.
To use the water jet spray on the car's windscreen, pull the same lever towards you for a quick jet spray.