Porsche 911 Turbo 2014, Руководство пользователя

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182
Driving and Driving Safety
Combined operation of PSM and PTV Plus
In order to ensure optimum stabilization of the
vehicle, the center differential lock is influenced
when PSM interventions occur on vehicles with
PTV Plus.
Combined operation of PSM and PTM
In order to ensure optimum stabilization of the
vehicle, torque distribution between the front and
rear wheels is adapted and the differential lock is
influenced when PSM interventions occur on
vehicles with PTV Plus.
In the event of a PTM fault, PSM cannot be
switched off.
If PSM is switched off, it is switched on again
automatically.
Automatic brake differential (ABD)
The ABD system controls the front and rear axles
separately. If one wheel of an axle starts to spin,
it is braked so that the other wheel on the same
axle can be driven.
ABD recognizes different driving states, and it
features control strategies adapted to these
states. In situations in which little propulsive power
is required, such as when the vehicle moves off on
a level gravel surface, traction control already
becomes active at low engine speeds. If a large
amount of propulsive power is required, e.g. when
driving off on an uphill slope or for rapid
acceleration, the ABD system is adapted
accordingly.
Anti-slip control (ASR)
The anti-slip control system prevents the wheels
from spinning by adjusting the engine power,
thereby ensuring good lane-holding ability and
stable handling.
Engine drag torque control (MSR)
In conditions of excessive slip, the engine drag
torque control system prevents all driven wheels
from locking up when the vehicle is overrunning.
This is also the case for downshifts on a slippery
road.
Steering torque pulse
The steering torque pulse provides the driver
with steering assistance when braking on road
surfaces with differing friction values.
Additional steering forces also assist the driver
during counter steering.
Switching off PSM
f
Press button for at least 1 second.
PSM is switched off after a short delay.
The indicator light on the button and the
PSM OFF warning light on the instrument
panel light up.
The warning “ PSM off ” appears on the
multi-function display in the instrument panel.
When you brake in the ABS control range ,
the vehicle is stabilized even when PSM is
switched off.
One-sided spinning
of the wheels is prevented,
even with PSM switched off.
14_991_Turbo_21.book Seite 182 Mittwoch, 9. April 2014 2:19 14