Antilock Brake System (Abs) - freightliner Sprinter Operator's Manual

Driving safety systems
50
G
Warning
There is an increased risk of an accident if
you:
drive too fast, in particular when corner-
ing and on a wet or slippery road surface
drive too close to the vehicle in front
The driving safety systems described in this
section cannot reduce this risk and are un-
able to override the laws of physics.
Always adapt your driving style to the prevail-
ing road and weather conditions, and main-
tain an adequately safe distance from other
road users as well as from any obstacles on
the road.
i
Only use wheels with the recommended tire
sizes ( page 290); otherwise, the driving safety
systems will not work correctly.
Anti-lock Brake System (ABS)
ABS regulates the brake pressure in such a
way that the wheels do not lock when you
brake. This allows you to continue steering
when braking. ABS works from a speed of
about 3 mph (5 km/h) upwards, regard-
less of road surface conditions.
ABS works on slippery surfaces, even
when you only brake gently.
G
Warning
Do not depress the brake pedal several times
in quick succession (pumping). Depress the
brake firmly and evenly. Pumping the brake
pedal may reduce the braking effect.
There is a malfunction if the ! indicator
lamp is permanently lit while the engine is
running ( page 212). Despite this, the
normal driving and braking functions re-
main available.
Braking
If ABS intervenes during braking, you will
feel the steering wheel vibrate gently and
the brake pedal pulsate.
If ABS intervenes: continue to de-
press the brake pedal firmly until the
braking situation is over.
For full brake application: depress
the brake pedal with maximum force.
G
Warning
Always adapt your driving style to the prevail-
ing road and weather conditions, and main-
tain an adequately safe distance from other
road users as well as from any obstacles on
the road.
If ABS malfunctions, the wheels could lock
when you brake. This means that the steer-
ability of the vehicle is restricted during brak-
ing and the stopping distance may increase.
If ABS is deactivated due to a malfunction,
BAS is also deactivated.
Brake Assist (BAS)
Brake Assist operates in emergency brak-
ing situations. If you depress the brake
pedal quickly, BAS automatically increases
the brake pressure, thereby reducing the
stopping distance.
Keep the brake pedal firmly depressed
until the emergency braking situation is
over.
ABS prevents the wheels from locking.
When you release the brake pedal, the
brakes will work as normal again. BAS is
deactivated.
Vehicles without steering wheel buttons:
There is a malfunction if the : indicator
lamp is permanently lit while the engine is
running ( page 51).
G
Warning
If BAS malfunctions, the brake system is still
available with the full brake boosting effect.
In an emergency braking situation, however,
the braking force will not be additionally
boosted automatically and the stopping dis-
tance may increase.