Porsche 928 S 1986 Driver Manual page 52

Selector positions
D
This is the gear to select for normal driving.
The four forwards gears are automatically en­
gaged, according to the accelerator pedal
position and the speed of the vehicle.
3
This is the gear to select when pulling a trailer
on shallow upward and downward gradients
and for mountainous terrain without a trailer.
The engine's power is better utilised, and also
the retardation effect of the engine is greater.
The vehicle pulls away in 1st gear and changes
automatically up to 3rd gear. 4th gear is locked
out. During driving, this position can be se­
lected, even with the accelerator depressed.
However, as 3rd gear is then immediately en­
gaged, this should not be done at speeds in
excess of 190 km/h (115 mph).
48
2
This position should be selected when it ap­
pears advisable to hold the vehicle in 1st or
2nd gear, e. g. steep uphill or downhill stretches,
or when operating with a trailer in mountainous
terrain.
The vehicle remains in 1st or 2nd gear, and 3rd
and 4th gears are locked out.
This position can be selected from position
3 during driving by pressing the lock-out but­
ton, but should only be done at speeds lower
than 120 km/h (75 mph).
Ρ
Must only be selected when the vehicle is
stationary.
In this position, the driving wheels are me­
chanically locked. To select Ρ the lock-out but­
ton must be pressed.
Ρ should only be selected after the hand­
brake has been applied, and should be dis­
engaged before the handbrake is released.
The engine can be started in this position.
Ν
In this selector position, no gears can be en­
gaged. It is the same as neutral in a manual
gearbox, and should be selected when the
vehicle is stationary for any length of time,
e. g. traffic jam. This position should only be
selected when the engine rpm. are at tick-
over.
The engine can be started in this position.
R
This position must only be selected at tick-
over, and with the vehicle stationary. The
lock-out button has to be pressed to select
R. At speeds in excess of 15 km/h (10 mph) a
hydraulically operated lock-out prevents R
and Ρ from being engaged. With the ignition
on, the reversing lights come on automatic­
ally when R is selected.