McLaren P1 Owner's Handbook Manual page 75

DRIVING CONTROLS
HANDLING AND POWERTRAIN CONTROLS
4. Press the LAUNCH button.
NOTE: L will flash in the gearbox mode
indicator, see Manual/Automatic Mode,
page 2.19 and 'Launch Mode Active -
Awaiting Throttle' will be shown in the
central screen display.
5. With your left foot remaining on the
brake pedal, press and hold the
accelerator pedal down fully with your
right foot, the engine speed will increase
to 3,250 RPM.
NOTE: To abort launch control release
the brake pedal before pressing the
accelerator pedal or wait for
approximately 60 seconds until launch
control is deactivated.
NOTE: The message 'Launch Mode
Active - Boost Building' will be shown in
the central screen display. Once
sufficient boost has been achieved, the
message 'Launch Mode Active - Boost
Ready' will be shown in the central
screen display.
6. Release the brake pedal with your left
foot and the launch control system will
perform a launch start to give maximum
acceleration. If the brake is not released
after 6 seconds the launch control will
abort automatically.
NOTE: To abort launch control release
the accelerator pedal or wait for
approximately 5-10 seconds until launch
control is deactivated. If the launch is
aborted, release the accelerator pedal
and then press again to drive away.
7. Launch control will operate if procedure
has been followed correctly until
aborted.
NOTE: Whilst in launch control, the
vehicle will carry out automatic gear
shifts, and optimise traction. It will
continue to do so until launch control is
aborted. To abort launch control, release
the accelerator pedal, apply the brake, or
operate one of the gearshift paddles.
2.31