Porsche 911 turbo Owner's Manual page 33

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Automatic Gate
Gear shifting
characteristics depend
on
the
accelerator
pedal position,
road speed, engine
speed,
axial and
lateral
acceleration.
Five
different shift curve families are available
be-
tween economy and
sport, whereby the
shift
points are changed
to
lower
or
higher
speeds
depending on driving
habits.
Upshifting before curves
can be
avoided
by
-releasing
the
accelerator
pedal" quickly.
A
ateral acceleration sensor recognizes
driving
rn a curve and
avoids unwanted upshifts;
the
certinent gear is held
up
to the speed limit,
at
w'tr
ch
point
there is then automatic
upshift.
The engine braking effect is thus
fully
utilized
before entering
a
curve and
this
makes
it
possible
to
drive through curves
in
under
power.
Selector Lever Positions
Position
P
-
Park
Select
only when car has
been stopped.
Drive gears are
locked mechanically with
the
selector lever
in
"P".
Engage
"P" only
when
car has
been stopped and
disengage
only
after applying the
brakes.
Position
R
-
Reverse
Engage only
after
car has
been
stopped
and brakes
have been applied.
Accelerate only after the lockup clutch
has
engaged.
Position
N
-
Neutral
Selector lever position "N" is the same as
the
idle position of
a
manual
transmission
and
should
be
selected
for
long stops (e.9.
traffic
jams) or towing.
A driving range may only
be
selected
with the
engine running
at
idle
speed.
The
selector lever should not be
moved from
"D" to "N". lf
this occurs be
careful
to
match
RPMS
to
vehicle speed when
moving
the
lever
back into "D" (keep to
the same RPM as
that while
leaving range
-D'
whenever
possible).
Excessive engine speed could
sub-
ject
transmission clutches
to
heavy loads
and
damage could result.
The
selector lever
may be
moved into
"N"
while driving
if there is danger of the car
skid-
ding on slippery ice. Othenvise "N"
should not
be selected while
driving.
Position
D
This position js
selected
for
normal driving.
All
forward speed gears are shifted aulomatically
depending
on the
accelerator
pedal
position
and
road speed.
ln selector lever position "D" the
car starts
in
2nd gear by
accelerating
slightly
or
in
1st
gear by
accelerating strongly.
Only
accelerate after connection
between
the
engine and transmission.
Position
3
- Overall Operation
Maximum permissible downshift speeds:
from
D to 3
=
4400 rpm
or
111
mph.
The car moves off in
1st
gear. This position
is
preferred on slight uphill or downhill
gradients
while hauling a trailer as well as on
mountain
roads without trailer hauling. There
is
better
use
of engine power and
the
braking
effect
from the
engine
is
also stronger. The
trans
from the en
shifted
automaticallly
up
to
3rd
gear,
but
will not
engage 4th
gear.
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