McLaren P1 Owner's Handbook Manual page 40

BEFORE YOU DRIVE
WASHERS AND WIPER
Single Wipe
1. For a slow single wipe, briefly push the
wiper stalk and release. The wiper will
operate once at slow speed, without
washers.
2. For a fast single wipe, push and hold the
wiper stalk down. The windscreen wiper
will perform a continuous fast wipe until
the stalk is released.
1.34
Windscreen Wash/Wipe
Pull the wiper stalk towards you.
The windscreen washers and wiper will
operate at a slow speed for as long at the stalk
is held.
When the stalk is released, the wiper will
complete its cycle and return to the parked
position. After a period of time the wiper will
operate once more to wipe any remaining
washer fluid from the windscreen.
NOTE: The position of the washer jets are
set during vehicle manufacture and
should not need adjusting. If a problem
occurs, consult your McLaren Retailer.