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Driving and Driving Safety
ABS brake system
(Anti-Lock Brake System)
ABS ensures:
–
Full steering control
The vehicle remains steerable.
–
Good driving stability
No skidding due to locked wheels.
–
Optimum braking distance
Shorter stopping distance in most cases.
–
Prevention of wheel locking
No flat spots on the tires.
Function
The decisive advantage of ABS lies in the driving
stability and maneuverability of the vehicle in
hazardous situations.
ABS prevents locking of the wheels during full
braking, on almost all road surfaces, until just
before the vehicle stops.
ABS begins to control the braking process as
soon as a wheel shows a tendency to lock.
This controlled braking process is comparable
with extremely rapid cadence braking.
The pulsating brake pedal and a “juddering noise”
warn the driver to adapt his driving speed to the
road conditions.
f
If full braking is necessary, fully depress the
brake pedal during the whole braking
operation, even though the pedal is pulsating.
Do not reduce the braking pressure.
If the ABS warning lights light up on the instrument
panel and on the multi-purpose display of the
instrument panel while the engine is running,
ABS has switched off because of a fault.
In this case, the brake system will operate
without
lock prevention,
as in vehicles without ABS.
f
Adapt your driving style to the changed
braking behavior.
The ABS must be checked immediately at your
authorized Porsche dealer in order to prevent
the occurrence of further faults with
unpredictable consequences.
The ABS control unit is adjusted for the approved
tire dimensions.
The use of tires with non-approved dimensions can
lead to different wheel speeds, causing ABS to
switch off.
Off-road ABS
(ABS in the off-road driving program)
When the off-road driving program is active,
an ABS configuration specially matched to
off-road driving is activated automatically.
In the event of braking on loose ground, the
permissible slip values for ABS braking are
increased so that the off-road braking distance
is reduced (wheels dig into the surface).
If the driver needs to steer, the off-road driving
program is automatically switched off to maintain
steerability.
HOLD function: Drive-Off Assistant,
standstill management
The HOLD function, as an assistance function,
assists the driver when stopping and driving off
on upward slopes.
The vehicle is automatically prevented from rolling
back away from the desired direction of travel.
When the HOLD function is active, the indicator
light
on the instrument panel comes on.
Driving off with the Drive-Off Assistant on
vehicles with manual transmission
1.
Hold the vehicle securely on the slope with
the footbrake.
The engine must be running.
2.
Press the clutch pedal fully.
3.
Engage a gear corresponding to the
direction of travel up the slope (1st gear or
reverse gear).
4.
Release the footbrake while keeping the clutch
pedal pressed.
The vehicle is held on the slope to facilitate
driving off and prevent it from rolling back.
5.
Drive off as usual.
ABS warning light USA
ABS warning light Canada