Porsche 911 TURBO - 1975 WORSHOP, Manual

Page: 120 / 252

120
Controls, Safety, Instruments
Decelerating
Option 1
f Pull operating lever towards the steering wheel
(position 2 ) until the desired speed is reached.
The speed reached is maintained and stored
when the lever is released.
Option 2
f Briefly move lever towards the steering wheel
(position 2 ) (a maximum of 10 times).
The speed is reduced by 2 km/h (1 mph) each
time.
Vehicles with Tiptronic
Additional downshifts are carried out to improve
deceleration (especially when driving downhill).
Interrupting cruise control operation
f
Pull operating lever downwards briefly
(position 3 ) or
f Operate brake or clutch pedal or
f Switch Tiptronic transmission to selector lever
position N .
f
Please observe the chapter “TIPTRONIC S” on
page 143.
The speed driven at before the interruption
remains stored in the memory.
Cruise control operation is interrupted
automatically:
– If the set vehicle speed is exceeded by more
than approx. 25 km/h (16 mph) for longer than
20 seconds.
– If the actual vehicle speed falls to approx.
10 km/h (6 mph) below the set vehicle speed
for longer than 5 seconds (upward slopes).
– For PSM control operations.
Resuming the stored speed
f
Briefly push operating lever upwards
(position 4 ).
The cruise control accelerates/decelerates
the vehicle to the stored speed.
The stored speed should only be recalled when
traffic conditions and the road surface so permit.
Switching cruise control readiness off
f
Press knob A on the cruise control lever –
the green readiness light in the speedometer
goes out.
The memory is cleared when the vehicle is parked
and the ignition switched off.
Tip on driving
On upward or downward slopes, the set speed
cannot always be maintained by the cruise control.
f To obtain sufficient engine braking or a better
engine-speed range, you therefore have to
change down to a lower gear.