CITROEN C4 Cactus Handbook & Instructions page 120

Visibility
Rear wiper
Rear wiper selection ring:
Park.
Intermittent wipe.
Wash-wipe (set duration).
118
Reverse gear
When reverse gear is engaged, the rear wiper
will come into operation automatically if the
windscreen wipers are operating.
Activation or deactivation of this automatic
function can be set in the touch screen tablet.
F Select the "Driving assistance"
menu.
F In the secondary page, press
"Vehicle settings".
This function is activated by default.
If a significant accumulation of snow or
ice is present, or when using a bicycle
carrier on the boot, deactivate the
automatic rear wiper.
Windscreen wash
Pull the wiper stalk towards you.
The windscreen wash, then the windscreen
wipers, operate for a pre-determined time.
Your vehicle is fitted with an innovative
windscreen wash system.
The screenwash fluid is sprayed all
along the length of the wiper blade, so
avoiding impairment of the driver's view
or that of the passengers.