Porsche 968 - Tempostat (Automatic Speed Control); Tempostat Operation and Settings

1 Set/accelerate
2 Recall
3 Cancel
Tempostat
(Automatic Speed Control)
The Tempostat will maintain any desired speed
within the range 40-220 km/h (25 - 137 mph)
without you operating the accelerator . Irrespec -
tive of this, you can brake, change gear and ac -
celerate as normal.
The operation of the Tempostat is controlled by
the stalk behind the wiper stalk .
38
The vehicle's current. road speed can be stored
in an electronic memory by briefly pressing the
control stalk forwards (1 ). You can then take
your foot off the accelerator and this speed will
be maintained. ·
When the vehicle is braked or stopped , the unit
automatically cuts out, but the last information
(speed) stored remains in the memory. This in-
formation can be recalled by pressing the stalk
downwards (2). If the ignition is turned off, the
electronic memory is cancelled.
If you wish to drive faster than the speed en-
tered, you can increase speed with the accelera -
tor
or by moving the stalk forwards (1) and hold-
ing until the desired speed is attained . The
speed driven when you release the control stalk
is then maintained automatically . If you accel-
erate from the programmed speed using the ac-
celerator pedal (e .g. when overtaking), the pro-
grammed speed will automatica ll y be resumed
as soon as you remove your foot from the ac-
celerator.
If the programmed speed is too high, briefly pull
the control stalk towards the steering wheel (3)
or brake; this interrupts the Tempostat control.
Once the required lower speed is attained, tap
the control lever forwards (1); the new speed is
stored in the memory and maintained automat-
ically.
Note
When you depress the clutch, the speed control
is interrupted, but resumes again when the
c lutch is released.
To avoid accidentally overrevving the engine ,
do not move the gearshift lever into neutral
at road speeds above 40 km/h (25 mph)
while the Tempostat is engaged .
On steep up or downhill inclines it is possible
that the vehicle will not maintain the selected
speed in a higher gear; in this case you should
change down to avoid overloading the engine
(uphi l l) or to achieve sufficient engine braking
(downhill).
For safety reasons the Tempostat should not be
used in heavy traffic or when road conditions
are unsuitable (e.g. winding or slippery roads) .