Operation Manual

i Canada only:
This device complies with RSS‑210 of
Industry Canada. Operation is subject to
the following two conditions:
R
This device may not cause
interference, and
R
this device must accept any
interference received, including
interference that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority to
operate the equipment.
Driving safety systems
Introduction
G
Warning!
The following factors increase the risk of
accidents:
R
Excessive speed, especially in turns
R
Wet and slippery road surfaces
R
Following another vehicle too closely
The driving safety systems described in
this section cannot reduce these risks or
prevent the natural laws of physics from
acting on the vehicle.
Always adapt your driving style to the
prevailing road and weather and traffic
conditions and keep a safe distance to
other road users and objects on the street.
i
In winter operation, the maximum
effectiveness of the ABS, the hydraulic
brake assistant, and the ESP
®
is only
achieved with winter tires (Y page 145)
or snow chains* as required.
Antilock Brake System (ABS)
G
Warning!
Do not pump the brake pedal. Use firm,
steady brake pedal pressure instead.
Pumping the brake pedal defeats the
purpose of the ABS and significantly
reduces braking effectiveness.
The Antilock Brake System (ABS) regulates
the brake pressure so that the wheels do not
lock during braking. This allows you to
maintain the ability to steer your vehicle.
On slippery road surfaces, the ABS will
respond even to light brake pressure.
The ABS indicator lamp in the instrument
cluster (Y page 22) comes on when you
switch on the ignition. It goes out when the
engine is running.
Braking
At the instant one of the wheels is about to
lock up, a slight pulsation can be felt in
the brake pedal, indicating that the ABS is
regulating the brake pressure.
X
Keep firm and steady pressure on the
brake pedal while experiencing the
pulsation.
Continuous, steady brake pedal pressure
yields the advantages provided by the ABS,
namely braking power and the ability to
steer the vehicle.
A pulsating brake pedal can be an
indication of hazardous road conditions
and functions as a reminder to take extra
care while driving.
Emergency brake maneuver
X
Keep continuous full pressure on the
brake pedal.
G
Warning!
When the ABS is malfunctioning, the
hydraulic brake assistant and the ESP
®
are
also switched off.
When the ABS is malfunctioning, the wheels
may lock during hard braking, reducing
steering capability and extending the
braking distance.
46
Driving safety systems
>> Safety.
* optional
BA 451 USA, CA Edition A 2011; 1; 4, en-US
hereepe Version: 3.0.3.6
2010-05-11T15:12:26+02:00 - Seite 46