Front washers
Pull the stalk towards you and hold it there for a few seconds.
The front windscreen washers activate. If the headlights' high beam or passing beam is active, the headlights are also washed.
Rear washer
Push the stalk away from you and hold it there for a few seconds.
The rear windscreen washer activates.
When you let go of the right-hand stalk, the wipers make a few passes to wipe away excess fluid.
Note
Low washer fluid and washing headlights
If the washer fluid level is low, the headlights won't be washed. This is to prioritise the windscreen washers to keep the windscreen clean and clear.