Shift in P before vehicle stop, parking mechanism could be damaged and this will be no warranty give from Punch.

Shift in P after the vehicle completely stopped, this is the normal driving step. In this condition, parking mechanism locked the secondary pulley as well as the output shaft and wheels. So the vehicle cannot move.

Locked state

Shift to P before vehicle completely stop is a very dangerous operation. Parking mechanism is a mechanic control, if the driver shift to P before vehicle completely stop, Parking mechanism will faced a huge force from whole car. This can cause damage for parking mechanism or the whole transmission will be damaged.

So shift in P after car completed stopped, reducing unnecessary damage.