McLaren P1 Owner's Handbook Manual page 82

DRIVING CONTROLS
DRIVING SAFETY SYSTEMS
NOTE: The TPMS can suffer interference
if you are operating radio transmitting
equipment (e.g. radio headphones, two-
way radios) in or near the vehicle.
TPMS Operation
If a low tyre pressure is detected, the
TPMS warning light will illuminate along
with an associated error message in the
central screen display.
Stop the vehicle as soon as possible, check all
your tyres and inflate them to the
recommended pressure, see Tyre Pressures,
page 5.46. The warning light will extinguish
once the tyres have been inflated to the
correct pressure.
Driving on a significantly under-inflated tyre
causes the tyre to overheat and can lead to
tyre failure. Under-inflation also reduces fuel
efficiency and tyre tread life, and may affect
the vehicle's handling and stopping ability.
Over-inflation can also have an adverse effect
on tyre tread wear and vehicle handling.
2.38
WARNING: TPMS is not a substitute for
proper tyre maintenance, and it is the
driver's responsibility to maintain correct
tyre pressure, even if under-inflation has
not reached the level to trigger
illumination of the TPMS low tyre
pressure warning light.
Each tyre should be checked weekly when
cold and inflated/deflated to the pressure
recommended on the tyre inflation pressure
label.
Navigate through the 'Vehicle Info' screen in
the left-hand display to view the current tyre
pressures, see Vehicle Info, page 3.16.
The display shows the pressures of each of
the four tyres. If the pressure figure appears in
green, no action is required. If it appears as
red text, inflate the associated tyre to the
correct pressure as soon as possible and
inspect the tyre(s) for any possible causes of
reduced pressure.