Porsche 911 TURBO - 1975 WORSHOP, Manual

Page: 147 / 252

Shifting Gears
147
Shifting up
f Press upper part ( + ) of a rocker switch.
Shifting down
f Press lower part ( – ) of a rocker switch.
Depending on driving speed and engine speed,
you can shift up or down at any time.
Gear changes which would exceed the upper or
lower engine-speed limit are not executed by the
controller.
You can change down two gears by quickly
pressing the rocker switches twice.
If the engine-speed limit is reached, an automatic
upward shift is performed or, just before idling
speed is reached, a downward shift is performed.
Select an appropriately low gear on upward and
downward slopes.
This will ensure optimum use of engine power and
engine braking.
PSM switched off and/or Sport mode
switched on
f Please observe the chapter “SWITCHING OFF
PSM” on page 49.
f
Please observe the chapter “SPORT MODE” on
page 46.
If the PSM is switched off and/or Sport mode is
switched on, an automatic upshift does not occur
when the engine speed limit is reached.
Cancelling upshift suppression
The restriction can be cancelled for one gear
change by depressing the accelerator to
kickdown. If, for example, the engine speed limit
is reached during overtaking and the automatic
upshift does not occur, the transmission in this
case shifts up as a result of kickdown operation.
f
Depress the accelerator pedal beyond the full-
throttle point (kickdown).
Manual mode failure
If manual mode fails, the control electronics
switch to automatic mode. In this event, the instru-
ment cluster will display selector lever position D .
f
Have the fault remedied.
Consult a qualified specialist workshop. We
recommend a Porsche partner for this work as
they have trained workshop personnel and the
necessary parts and tools.