freightliner Sprinter 2020, Operating Instructions Manual

Page: 145 / 344

Function of driving systems and driving
safety systems
In this section, you will find information about the
following driving systems and driving safety sys‐
tems:
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ABS (Anti-lock braking system)
(
/
page 143)
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ASR (acceleration skid control) (
/
page 143)
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BAS (Brake Assist System) (
/
page 143)
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ESP ® (Electronic Stability Program)
(
/
page 144)
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EBD (Electronic Brakeforce Distribution)
(
/
page 145)
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Active Brake Assist ( / page 145)
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Cruise control (
/
page 148)
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Active Distance Assist DISTRONIC
( / page 149)
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Hill start assist (
/
page 151)
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HOLD function ( / page 151)
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Parking Assist PARKTRONIC (
/
page 152)
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Rear view camera (
/
page 153)
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Surround view camera (
/
page 156)
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ATTENTION ASSIST (
/
page 158)
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Blind Spot Assist (
/
page 159)
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Active Lane Keeping Assist (
/
page 162)
Functions of ABS (Anti-lock Braking System)
Observe the important safety guidelines for the
driving safety system.
ABS controls the brake pressure in critical situa‐
tions:
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The wheels are prevented from locking when
braking, e.g. during maximum full-stop brak‐
ing or when there is insufficient tire traction
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The steerability of the vehicle in terms of
physical possibilities is ensured when braking
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ABS is active from speeds of approx. 3 mph
(5 km/h). On a slippery road surface, ABS
intervenes even if you only brake gently.
System limits
If there is a malfunction and the yellow ! ABS
warning lamp lights up continuously in the instru‐
ment display after starting the engine, ABS may
be impaired or inoperative.
If ABS intervenes, you will feel a pulsing in the
brake pedal. The pulsating brake pedal may be an
indication of hazardous road conditions and func‐
tions as a reminder to take extra care while driv‐
ing.
If ABS intervenes: keep the brake pedal firmly
depressed until the braking situation has passed.
To carry out maximum full-stop braking:
depress the brake pedal with full force.
Function of BAS (Brake Assist System)
& WARNING Risk of an accident caused by
a malfunction in BAS (Brake Assist Sys‐
tem)
If BAS is malfunctioning, the braking distance
in an emergency braking situation is
increased.
#
Depress the brake pedal with full force
in emergency braking situations. ABS
prevents the wheels from locking.
BAS supports you with additional braking force in
an emergency braking situation.
If you depress the brake pedal quickly, BAS is
activated:
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BAS automatically boosts the braking force of
the brakes
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BAS can shorten the braking distance
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ABS prevents the wheels from locking
When you release the brake pedal, the brakes
function as usual again. BAS is deactivated.
Functions of ASR (Acceleration Skid Control)
ASR can neither reduce the risk of an accident
nor override the laws of physics if the driver does
not pay attention when pulling away or accelerat‐
ing. ASR is only an aid. Always adapt your driving
style to suit the prevailing road and weather con‐
ditions.
If you activate or deactivate the all-wheel drive in
a vehicle with this option, ASR will be deactivated
for the duration of the activation/deactivation
process.
Vehicles without steering wheel buttons: if
ASR is malfunctioning, the ÷ indicator lamp
lights up while the engine is running and the
engine output may be reduced (
/
page 22).
ASR improves traction, i.e. the transfer of power
from the tires to the road surface, for a sustained
period and thereby, also improves the driving sta‐
Driving and parking 143