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P P o o r r s s c c h h e e S S t t a a b b i i l l i i t t y y M M a a n n a a g g e e m m e e n n t t ( ( P P S S M M ) )
e Briefly press the
A
button (vehicles with Sport
Chrono package: Press button for at least two
B
seconds).
C
PSM is switched off after a brief delay.
The light indicator on the button and the PSM
D
OFF warning light
in the instrument cluster
E
come on.
A message stating that PSM is deactivated ap-
F
pears on the instrument cluster.
G
Information
H
I
When braking in the ABS control range, the vehicle
is stabilized even when PSM is switched off. One-
J
sided spinning of the wheels is prevented even
K
when PSM is switched off.
L
However, in exceptional situations it can be advan-
tageous to temporarily switch off PSM:
M
– On loose ground and deep snow.
N
– When "rocking the vehicle free".
O
Information
P
When PSM Sport mode is active, it is only possible
Q
to switch to PSM OFF mode if the PSM was acti-
R
vated beforehand.
S
T
Switching PSM back on
e Press button .
U
PSM is immediately active.
V
The light indicator on the button and the PSM
W
OFF warning light
on the instrument cluster
go out.
X
A message stating that PSM is activated ap-
Y
pears on the instrument cluster.
Z
200
Responding to warning symbols
For information on the PSM warning light :
> Please see chapter "Warning and Information
Messages" on page 256.
ABS brake system (anti-lock brak-
ing system)
Loss of control over the
WARNING
vehicle
ABS does not reduce the risk of accidents owing to
an inappropriate driving speed.
The increased safety provided should not induce
you to take greater risks with your safety. The lim-
its set by the laws of driving physics cannot be
overcome, even with ABS.
e Despite the advantages of ABS, the driver is
responsible for adapting his or her driving style
and maneuvers in line with road and weather
conditions, as well as the traffic situation.
ABS ensures:
– Full steering control: Vehicle remains steerable
– Good driving stability: No skidding due to
locked wheels
– Optimal braking distance: Shortening of brak-
ing 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 haz-
ardous situations.
ABS prevents the wheels from locking during full
braking on virtually all road surfaces until just be-
fore the vehicles come to a standstill.
ABS begins to take control as soon as one wheel
shows a tendency to lock.
The controlled braking process is comparable to
cadence braking in very rapid succession. The
driver is warned to adapt the driving speed to the
road conditions by a pulsing brake pedal and a
"juddering noise".
Full braking is necessary:
e Fully depress the brake pedal during the entire
braking operation, despite the pulsing pedal.
Do not reduce the braking pressure.
Responding to warning symbols
For information on the ABS warning light:
> Please see chapter "Warning and Information
Messages" on page 256.
Multi-collision braking
During an accident, multi-collision braking can help
the driver reduce the risk of skidding and further
collisions during the accident through automati-
cally initiated braking.
Prerequisites
Multi-collision braking works exclusively:
– During front, side, and rear-end collisions.
– When the airbag control unit detects an appro-
priate activation threshold during an accident.
– During an accident at a driving speed above
approx. 5 mph (10 km/h).
Information
The vehicle is decelerated automatically by the
PSM system, provided the hydraulic brake system,
PSM, and electrical system remain undamaged
and operational during the accident.
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