traction control PORSCHE PANAMERA GTS 2011 1.G Information Manual

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force is distributed to the front by a more
powerful engagement of the multiplate
clutch. In addition, ASR reduces wheel
slip. When cornering, the front wheels
only ever receive as much drive force

as is necessary to guarantee optimum
lateral stabilit y. In this way, PTM, in inter -
action with Porsche Stabilit y Management
(PSM, p. 27) ensures that the perfect
distribution of drive is achieved every
time: whether on long straights, through
tight corners, or on surfaces with differ -
ent friction coef ficients. In this situation,
traction is additionally enhanced by the
automatic brake differential (ABD).
Whenever the brake control systems are
required to intervene, PTM decouples the
front axle completely so that PSM inter -
ventions can take place at each individual
wheel.
SportDesign steering wheel.
In the Panamera GTS, the SportDesign
steering wheel is fit ted as standard and
features gearshift paddles and a top
centre marking on its smooth-finish
leather rim.
The paddles are made from a strong
alloy and are ergonomically located
behind the right and left steering wheel
spokes. Pull the right-hand paddle to
shift up and pull the left-hand paddle
to shift down. A display in the left- and
right-hand steering wheel spokes tells
you whether SPORT, SPORT PLUS and
‘Launch Control’ (p. 28) are activated.
As an option, it is possible to have the
SportDesign steering wheel rim finished
in black Alcantara.
Porsche T raction Management (PTM).
Fit ted as standard in the Panamera GTS,
Porsche Traction Management (PTM)
comprises an active all-wheel drive with
electronic and mapcontrolled multiplate
clutch with automatic brake differential
(ABD) and antislip regulation (ASR).
The electronically controlled multiplate
clutch regulates the fully variable distrib -
ution of drive force bet ween the perma -
nently driven rear axle and the front axle.
Through continuous monitoring of driving
conditions, the electronics are able
to respond to a variet y of situations.
Sensors check, among other variables,
the rotation speeds of all four wheels,
the longitudinal and lateral acceleration
of the vehicle, and the steering angle.
If the rear wheels threaten to spin under
acceleration, a greater proportion of drive
[ 01 ] SportDesign steering wheel[
02 ] All-wheel drive
[
02 ]
The new P
anamera GTS |
Performance
[ 01 ]

26 27
The new P
anamera GTS
|
Performance
Porsche Stability Management (PSM).
PSM is an automatic control system
that stabilises the vehicle at the limits of
dynamic driving performance. Sensors
continuously monitor driving direction,
speed, yaw velocit y and lateral accelera -
tion. Using this information, PSM com -
putes the actual direction of motion. If
this direction deviates from the desired
course, PSM can, for example, initiate
braking interventions targeted at individual
wheels in order to stabilise the vehicle.
Under acceleration on wet or low-grip
road surfaces, PSM improves traction
using the ABD (automatic brake
differential) and ASR (antislip regulation)
functions.
For an even more involving driving
experience, you always have the option
to deactivate PSM. It is automatically
reactivated, for your safet y, only if you brake harder and either of the front
wheels (in SPORT PLUS mode, both

of the front wheels) requires ABS
assistance.
PSM comes with t wo additional
functions: precharging of the brake
system, enabling maximum braking
power to be achieved much sooner;
and brake assist, for maximum
deceleration in a critical situation.
Porsche Dynamic Chassis Control
(PDCC) including Porsche Torque
Vectoring Plus (PTV Plus).
PDCC is available as an option for the
Panamera GTS. This is an active anti-roll
system that anticipates and significantly
reduces lateral body movement during
cornering manoeuvres. In addition, it
minimises the lateral instability of the vehicle on uneven ground. The effect is
achieved with the aid of active anti-roll
bars on the front and rear axles which
respond to the current steering angle
and lateral acceleration by producing a
stabilising force that precisely negates
the roll of the body.
PT V Plus combined with PDCC is a

system that actively enhances vehicle
dynamics and stabilit y. Operating in con -
junction with an electronically regulated
rear differential lock, it works by varying
the torque distribution to the rear
wheels. To be more precise, this means
that when the car is driven assertively
into a corner, moderate brake pressure
is applied to the inside rear wheel.
Consequently, a greater amount of drive
force is distributed to the outside rear
wheel, inducing an additional rotational
pulse (yaw movement) around the vehi -
cle’s vertical axis. This results in a direct
and sport y steering action as the car enters the corner. At low and medium
vehicle speeds, PT V Plus significantly
increases agilit y and steering precision.
At high speeds and when accelerating out
of corners, the electronically regulated
rear dif ferential lock ensures greater

driving stabilit y. It also serves to improve
traction at the rear wheels on road sur -
faces with varying levels of grip, in the
wet and on snow.
For the driver, this means remarkable
lateral vehicle stabilit y, optimum traction
as well as a high degree of agilit y at
every speed with precise steering and
stable load transfer characteristics. In
short, it offers pure driving pleasure.