2011 PORSCHE BOXSTER S belt

For ward thrust |
Engine
For fuel consumption and CO2 emissions please refer to page 127.
The engine will restart as soon as you
operate the clutch or, in cars with PDK,
release the brake. This fuel-saving inno -
vation is designed primarily for use in
towns or congested motorway traffic.
The auto start /stop function can be
deactivated and reactivated using a sepa -
rate but ton on the centre console. The
function may be deactivated automatically
under particular circumstances, e.g. in
extreme outside temperatures, when the
SPORT but ton is selected or when there
is low bat tery charge.

Cruise control.
This optional automatic speed controller
for the 19 to 149 mph (30 to 240 km/ h)
speed range is operated using a switch
on a separate control stalk on the steering
column. The advantages are claer, not
only can cruise control be used as a
means of staying within the speed limit,
it also helps you to save fuel by maintain -
ing a constant speed.
Electrical system recuperation.
For enhanced efficiency the new Boxster
models are equipped with intelligent elec-
trical system recuperation. The vehicle
bat tery is recharged by the generator
predominantly under braking. Thanks to this selective recharging, when you
request full driving power the maximum
possible output can be directed straight
to the road.
Servicing.
In the Boxster models, the generator and
air conditioning system are driven by a
single self-adjusting belt. The drive chains
on the camshafts do not normally require
servicing. With the sole exception of the
spark plugs, the ignition system is also
maintenance-free in normal servicing. In
short, longer service intervals mean longer-
lasting driving pleasure.

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Chassis
Another key advantage of PCCB is the
extremely low weight of the ceramic
brake discs, which are approximately
50 % lighter than standard discs of similar
design and size. As well as enhancing
performance and fuel economy, this represents a major reduction in unsprung
and rotating masses. The consequence

of this is bet ter road holding and increased
comfort, particularly on uneven roads,
as well as greater agilit y and improved
handling. Please note that circuit racing, trackday
use and other forms of performance

driving can significantly reduce the
service life of even the most durable
pads and discs. As with conventional
high-performance braking systems, we recommend that all brake compo
-
nents be professionally inspected and
replaced where necessary after every
track event.
Electric parking brake.
The electric parking brake, which can
be activated and deactivated manually,
is released automatically as you pull
away with your seat belt fastened. A hill
hold function is integrated as standard for the manual gearbox and for PDK.
It assists you in making a comfortable,
smooth and roll-free start on an incline.
Whenever you come to halt on an incline,
this is detected automatically and the
braking effect of the electric parking brake is supplemented by application

of the wheel brakes. As long as a gear
remains engaged, the brake pressure
is maintained at all four wheels. To pull
away, simply apply throttle (manual gearbox: apply throt tle and release the
clutch pedal). The wheel brakes are
released as soon as sufficient starting
torque is available and the parking brake
is released as the vehicle moves off.

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The wider view |
Safety
Roll-over protection.
Dual roll - over protection creates survival
space in the event of a roll-over or side
impact. The front roll-over protection
element is made from super and ultra
high -strength steels. The rear roll - over
bars located behind the seats are a composite construction of aluminium and
steel. They are fully trimmed to blend in
and provide an excellent level of safet y.
The upper seat belt guides are mounted
on the roll-over bars for easier fastening.
Airbags.
To protect the driver and passenger, the
new Boxster models are equipped with
full-size airbags, which are inflated in

t wo stages depending on the severit y
and t ype of accident (e.g. frontal or offset
frontal). In less serious accidents, the airbags are only partially inflated, thereby
minimising discomfort to the occupants.
In addition to the central airbag control
unit on the transmission tunnel, a pair of
impact sensors is located near the head
-
lights. This allows a crash to be detected and evaluated far sooner and with

considerably greater accuracy.Porsche Side Impact Protection
System (POSIP).
Both new Boxster models are equipped
as standard with the Porsche Side Impact Protection System (POSIP). It comprises
t wo side airbags on each side. An integral
thorax airbag is located in the outer side
bolster of each seat, while the door panels
each contain an upwards-inflating head
airbag. Each thorax airbag has a volume of
10 litres and each head airbag 15 litres, ensuring excellent protection in the event
of a side impact even with the hood open.
POSIP additionally includes steel side
impact protection elements in the doors.
1 Engineered body design

2 Airbags and Porsche Side Impact Protection (POSIP)
Aluminium
Super high-strength steel
Multi-phase steel
Alloyed steel