Porsche Stability Management (Psm) - Porsche Taycan Owner's Manual

Porsche Stability Manage-
ment (PSM)
General Safety Instructions
Loss of control over the
WARNING
vehicle
The PSM cannot reduce the risk of accidents due to
inappropriate speed.
The increased safety that is provided should not in-
duce you to take greater risks with your safety. The
limits set by the laws of driving physics cannot be
overridden by PSM.
e Despite PSM, drivers remain responsible for
adapting their driving style and maneuvers to the
road and weather conditions, as well as the traf-
fic situation.
Responding to warning symbols
Always observe any warning and information mes-
sages displayed in the vehicle.
> Please see chapter "Warning and information
messages" on page 244.
Operating principle
Porsche Stability Management (PSM) is a control
system for stabilizing the vehicle and is automati-
cally active when driving readiness is established.
The major components of the PSM are the auto-
matic brake differential (ASR), anti-slip regulation,
engine drag torque control and anti-lock braking
system (ABS).
PSM controls can be observed as follows:
– The PSM warning light on the instrument
cluster flashes
– Hydraulic noises can be heard
– Vehicle deceleration and a change in steering
wheel forces through targeted brake intervention
– Reduced drive power
– A pulsing brake pedal and changes in brake pedal
position when braking
Automatic brake differential
If one wheel on a driven axle starts to spin, it is
braked so that the other wheel on the same axle can
be driven.
Anti-slip regulation
Anti-slip regulation prevents wheels from spinning
through targeted adjustment of drive power, thereby
ensuring good lane-holding and stable handling.
Drive drag torque control
In the event of excessive slip, drive drag torque con-
trol prevents all the driven wheels from locking up
during acceleration. This is also the case when
downshifting on slippery road surfaces.
Anti-lock braking system (ABS)
ABS prevents the wheels from locking during full
braking.
> Please see chapter "ABS brake system (anti-lock
braking system)" on page 190.
Steering torque pulse
Steering torque pulse provides the driver with
steering assistance when braking on roads with
varying friction levels. Targeted impulses also assist
the driver during counter steering.

Porsche Stability Management (PSM)

Activating PSM Sport
Restricted PSM support
WARNING
In PSM SPORT mode, the support provided by PSM
is restricted in critical driving situations outside the
ABS control range.
e Always leave PSM SPORT switched off during
"normal" driving operation.
e Never activate PSM SPORT when driving with a
spare wheel.
Fig. 138: PSM OFF button
b b Vehicles with Sport Chrono package.
In PSM SPORT mode, the system is switched to a
sporty mode.
e Press the PSM OFF button briefly.
The button lights up yellow and a message ap-
pears on the instrument cluster.
Switching off PSM
No PSM support
WARNING
When PSM is switched off, the support provided by
PSM is absent in critical driving situations outside
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