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Warning!
f Do not obstruct the pedal travel with floor mats
or other objects.
The brake booster is ready for operation only
while the engine is running.
If the engine is switched off or there is a defect in
the brake booster, much greater force has to be
applied to the pedal when braking.
f Vehicles with defective brakes must not
be towed and must be transported on a flat
bed.
For information on towing and tow-starting:
f Please see the chapter “TOWING” on
page 316.
In heavy rain, while driving through water or after
leaving a car wash, the braking action may be
delayed and increased pressure may be required.
f For this reason, keep further back from the
vehicle in front and “dry” the brakes by
applying them at interval s. Make sure that the
traffic behind you is not affected. After a long drive over salted or gritted roads,
a coating may form on the brake discs and pads
that significantly reduces
friction and therefore
also braking effect.
f Even though the brake discs consist of alloyed
grey cast iron, they will unavoidably start to
corrode if your vehicle is parked for an
extended period. The brakes will tend to “rub”
as a result.
The nature, extent and effects of corrosion
depend on the amount of time the vehicle was
parked, whether road salt or grit was spread
and whether grease-dissolving agents were
used in car washes (not on vehicles with
Porsche Ceramic Composite Brake).
To prevent corrosion of the brake discs,
“brake them dry” before parking the vehicle
(not on vehicles with Porsche Ceramic
Composite Brake).
If braking comfort is no ticeably impaired, we
recommend that you have the brake system
checked by an authorized Porsche dealer. f
To relieve the brake system on downhill
stretches, change down to a lower gear in
good time (engine braking).
If engine braking is insufficient on steep
stretches, operate the footbrake at intervals.
Avoid continuous braking as it overheats the
brakes and reduces the braking effect.
For information on brake fluid and checking the
brake fluid level:
f Please see the chapter “BRAKE FLUID” on
page 258.
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Driving and Driving Safety
A- Switch cruise control on/off
1 - Set/increase desired speed
2 - Reduce desired speed
3 - Interrupt (OFF)
4 - Return to set speed (RESUME)Cruise ControlCruise control maintains any selected speed
between approx. 20–150 mph (30–240 km/h)
without you having to use the accelerator.
Cruise control is operated using the control stalk
at the bottom left of the steering wheel. Vehicles with PDK
Downshifts are carried out to help maintain the
pre-selected speed (especially when driving
downhill).
Warning!
Risk of accident while using cruise control in
heavy traffic and consequent personal injury
or death, on twisting roads or under
unfavorable road conditions (e.g. wintry or
wet conditions, varying road surfaces).
f Do not use the cruise control under such
conditions.
f Observe all local and national speed limits.
Risk of an accident, personal injury and loss
of control.
f Do not reach through the steering-wheel spokes while driving.
Switching cruise control readiness onfPress button A on the control stalk.Maintaining and storing speed1. Accelerate or decelera te to the desired speed
using the accelerator pedal.
2. Push the control stalk on the steering wheel forward (position 1).
The current driving speed is now stored as
the desired speed, which will be maintained
automatically.
Cruise control readiness
The grey symbol on the multi-function
display in the instrument panel indicates
readiness.
Desired speed
The desired speed that was stored is
displayed under the cruise control
symbol, which has now turned orange.
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Accelerating (e.g. to overtake)Variant 1
fIncrease the speed as usual with the
accelerator pedal.
When you ease off the accelerator, the
previously stored value is set again.
Variant 2
f Push the control stalk on the steering wheel
forward (position 1).
The desired speed is increased in steps of
1mph (1km/h).
or
Press the control stalk on the steering wheel
forward and keep it pressed (position 1).
The desired speed is increased in steps of
5 mph (10 km/h).
The new desired speed is displayed on the
multi-function display in the instrument panel.
Deceleratingf Briefly pull the control stalk on the steering
wheel towards the steering wheel (position 2).
The desired speed is decreased in steps of
1 mph (1 km/h).
or
Pull the control stalk on the steering wheel
towards the steering whee l and keep it pulled
(position 2).
The desired speed is decreased in steps of
5 mph (10 km/h).
The new desired speed is displayed on the
multi-function display in the instrument panel.
Vehicles with PDK
Downshifts are carried out to help maintain the
pre-selected speed (especially when driving
downhill).
Interrupting cruise control
operation–OFFThe speed driven before the interruption remains
stored in the memory and can be reactivated by
pressing the control stalk.
f Please see the chapter “RESUMING THE
STORED SPEED – RESUME” on page 178.
f Press the control stalk down (position 3).
or
Press the brake or clutch pedal or move
the PDK selector lever to position N.
For more information on driving with Porsche
Doppelkupplung:
f Please see the chapter “PORSCHE
DOPPELKUPPLUNG (PDK)” on page 193.
Cruise control operation is interrupted
automatically:
– If the set vehicle speed is exceeded by more than approx. 16 mph (25 km/h) for longer
than 20 seconds.
– If the actual vehicle speed falls below the set vehicle speed by approx. 37 mph (60 km/h)
for longer than 60 seconds (e.g. gradients).
– If Porsche Stability Management (PSM) intervenes for longer than 0.5 seconds.
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Driving and Driving Safety
Resuming the stored speed – RESUMEfPress the control stalk up (position 4).
Cruise control accelerates/decelerates the
vehicle to the stored speed.
Note on operation
The stored speed should on ly be recalled if traffic
and road conditions are conducive to driving at
that speed.Switching cruise control readiness offf Press button A on the control stalk.
The memory is cleared and the readiness
symbol disappears.
The stored desired speed is cleared when the
ignition is switched off when the vehicle is parked.
Tip on driving
On upward or downward slopes, the set speed
cannot always be maintained by cruise control.
f To obtain sufficient engine braking or a better
rev range, you therefore have to change down
to a lower gear.
Adaptive Cruise ControlAdaptive cruise control maintains any selected
speed between approx. 20–100 mph
(30–160 km/h) when driving on open roads
without you having to use the accelerator.
If a vehicle travelling ahead of you in the same lane
is detected as driving slower than the selected
speed, adaptive cruise control will automatically
maintain a set distance fr om the vehicle in front.
Adaptive cruise control slows your vehicle down if
the distance to the vehicle ahead becomes too
short and accelerates your vehicle if the distance
increases.
Warning!
Risk of accidents in heavy traffic, in city
traffic, on twisting roads or in unfavorable
road conditions (e.g. wintry or wet conditions
or varying road surfaces, etc.).
f Do not use adaptive cruise control under these
conditions.
Adaptive cruise control will not detect
stationary or slowly moving vehicles,
pedestrians, objects on the road, oncoming
vehicles in the same lane or cross traffic.
f You must pay attention to your vehicle’s
position in relation to other objects and
intervene as needed to ensure safe driving.
f Always keep the direction of travel in your field of view.
Radar sensorAdaptive cruise control uses a radar sensor
located in the middle of the front apron.
Maintenance note
fAlways keep the radar sensor clean and free of
ice and snow to ensure tha t it is fully functional.
For car care instructions:
f Please see the chapter “CAR CARE
INSTRUCTIONS” on page 269.
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Radiofrequency radiation exposure
Information
This equipment complies with FCC radiation
exposure limits set forth for an uncontrolled
environment. This equipment should be installed
and operated with minimum distance of 8 in.
(20 cm) between the radiator and your body.
This transmitter must not be co-located or
operating in conjunction wi th any other antenna or
transmitter
Warning!
Risk of accidents. Rada r sensor vision can be
impaired by rain, snow, ice or heavy spray.
Vehicles in front will not be detected properly
or may not be detected at all.
f Do not use adaptive cruise control under these conditions.
Warning message
Adaptive cruise control can be deactivated
automatically if the radar sensor is very dirty or
iced up, obstructed , in unfavorable weather
conditions (heavy rain) or when driving through
tunnels.
The message “Fault ACC sensor” will appear on
the multi-function display in the instrument panel.
For information on warning messages on the
multi-function display:
f Please see the chapter “OVERVIEW OF
WARNING MESSAGES” on page 152. Notes
This device complies with Part 15 of the FCC
Rules and with RSS-210 of Industry Canada.
Operation is subject to the following two
conditions:
1. This device may not cause harmful
interference, and
2. this device must accept any interference received, including interference that may
cause undesired operation.
Changes or modifications made to this equipment
not expressly approved by Porsche may void the
FCC authorization to operate this equipment.
This equipment has been tested and found to
comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference when the equipment
is operated in a commercial environment. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may
cause harmful interference to radio
communications. Operation of this equipment in a
residential area is likely to cause harmful
interference in which case the user will be required
to correct the interferen ce at his own expense.
This Class A digital apparatus complies with
Canadian ICES-003.
Cet appareil numérique de la classe A est
conforme à la norme NMB-003 du Canada.
Operating principle of adaptive cruise
controlNo vehicle detected in front – open road
driving
Adaptive cruise control operates like a cruise
control system. The desired speed that was set is
maintained constantly.
Vehicle detected in front – driving in traffic
If a vehicle travelling ahead of you in the same lane
is detected as driving slower than the selected
desired speed, adaptive cruise control will
automatically maintain a set distance from the
vehicle in front.
If the vehicle in front stop s, adaptive cruise control
will slow your vehicle down to a stop provided this
is possible within the cont rol limits of the system.
Adaptive cruise control actively keeps your vehicle
at a standstill.
If the vehicle in front drives off, automatic speed
control and distance control can be resumed.
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Override
The speed of the vehicle can be increased at any
time by pressing the accelerator.
If the set ACC speed is exceeded, the ACC is
deactivated.
The message “ACC passive” will appear on the
multi-function display in the instrument panel.
The desired speed that was stored is retained.
After releasing the accelerator pedal, the ACC
accelerates to the desired speed if there is no
vehicle in front and controls the distance if a
vehicle in front is present.
For information on the “ACC passive” status:
f
Please see the chapter “OPERATING STATES
WHEN ADAPTIVE CRUISE CONTROL IS
SWITCHED ON” on page 182.
R- Switch adaptive cruise control on/off
1 - Set/increase desired speed
2 - Reduce desired speed
3 - Interrupt (OFF)
4 - Operational readiness on/return to set speed
(RESUME)Using adaptive cruise controlAdaptive cruise control is operated using the
control stalk at the bottom left of the steering
wheel.
Note on operation
You can intervene manually at any time by
pressing the brake or accelerator.
A - Status display and desired speed
B - Current speed
C - Progress bar showing speed control range
(0–100 mph, 0–160 km/h)
D - Vehicle detected in front
E - Desired distance from vehicle in front
F - Current distance from vehicle in front
G - Current speed of vehicle travelling
in front
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Adaptive cruise control displayAll important information, messages and warnings
are displayed on the multi-function display in the
instrument panel.
“ACC” main menu
The adaptive cruise control display on the multi-
function display can be selected permanently
using the buttons on the multifunction steering
wheel or the control stalk at the bottom right of
the steering wheel.
For information on using the multi-function display:
f Please see the chapter “OPERATING THE
MULTI-FUNCTION DISPLAY IN THE
INSTRUMENT PANEL” on page 115. Status display
When adaptive cruise control is switched on, the
status display
A appears at the bottom left of the
multi-function display.
The status display A turns orange when adaptive
cruise control is active.
The status display A is grey when adaptive cruise
control is inactive. Examples:1.
Select
> “ACC ”
in the main menu.
If adaptive cruise control is switched on,
and no desired speed is stored, the
cruise control symbol appears but the
desired speed field remains blank.
If a desired speed is stored and no
vehicle was detected in front, the cruise
control symbol and the desired speed
are displayed.
If a desired speed is stored and a vehicle
was detected in front, a vehicle symbol
and the desired speed are displayed.
If the distance from the vehicle in front is
less than a safety distance which is
dependent on the set desired distance, a
yellow warning triangle appears when
adaptive cruise control is not active.
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Switching adaptive cruise control on
and offSwitching adaptive cruise control on
fPress button R on the control stalk.
The grey status display appears on the
multi-function display.
Adaptive cruise control is ready.
Switching adaptive cruise control off
f Press button R on the control stalk.
“ACC off” appears on the multi-function
display.
The desired speed that was stored is deleted.
The desired distance is set to the default value.Operating states when adaptive cruise
control is switched onThere are three possible operating states when
adaptive cruise control is switched on.
Adaptive cruise control active
Adaptive cruise control automatically regulates
the speed and distance fr om the vehicle in front.
The status display A turns orange. Adaptive cruise control is ready
Cruise control and distance control is inactive
after pressing the brakes or interrupting by
pressing the control stalk down (position
3, OFF ).
The desired speed that was stored and the
desired distance that was set are retained.
The status display A turns grey.
Adaptive cruise control is active again after
you release the accelerator.
For information on resuming cruise control and
distance control:
f Please see the chapter “RESUMING CRUISE
CONTROL AND DISTANCE CONTROL –
RESUME” on page 185.
Adaptive cruise control passive
Cruise control and distance control is inactive
after pressing the accelerator.
“ACC passive” appears on the multi-function
display.
The desired speed that was stored and the
desired distance that was set are retained.
The status display A turns grey.
Adaptive cruise control is active again after
you release the accelerator.
Setting and changing the desired speedPreconditions
– ACC is switched on.
– Vehicle is moving.
– No stationary objects are detected in front.
Setting the desired speed
1. Press the control stalk on the steering wheel forward (position 1).
The current driving speed is stored as the
desired speed, which will be maintained
automatically (within the control range from 20
to 100 mph, 30 to 210 km/h), and appears
orange in the status display A.
The red triangle B under the progress bar for
the speed control range shows the speed of
your vehicle.
2. Release the accelerator pedal. The desired speed is maintained automatically
unless a vehicle travelling in front is detected
as driving slower than the desired speed.
Note
If your vehicle is stopped, the message
“Impossible when parked” appears on the multi-
function display when you press the control stalk
forward (position 1).
If a stationary object wa s detected in front, the
message “Stationary ob ject” appears on the
multi-function display.