Volvo 2002 S80 Operation And Care Manual page 54

Automatic transmission - shift gate positions
The gear selector can be moved freely between N and D.
Depressing the selector knob enables you to move the gear selector to positions P, R, N, D, 3, 2 and 1.
W Winter/Wet driving mode - enhanced vehicle traction
· Mode W will only function if the gear selector is in the (D)rive position.
· Press the button at the base of the gear selector to engage/disengage this driving mode (see illustration).
· An LED in the button will light up to indicate that W is engaged and this will also be displayed in the instrument
panel (see page 23).
· This mode may be selected for starting/moving off on slippery roads.
pg. 72 Automatic transmission (Geartronic)
P (Park)
Use this position when starting the engine or parking the car.
Never use P while the car is in motion.