ted, the speed limiter brakes the vehicle by
4 km/h by applying the continuous brake.
Lower speed tolerance
The
Å
lower speed tolerance can be set on
vehicles with PPC. By reducing power output at
the top of a hill at the correct time, the lower
speed tolerance helps save fuel.
For all drive programs except
A economy
and
A
fleet
, you can set the upper speed tolerance
between 0 and 10 km/h. In the
A economy
and
A fleet
drive programs, the setting can only be
adjusted to between 3 and 10 km/h.
When PPC is active, the on-board computer
shows the lower speed tolerance next to the
speed.
Setting the speed tolerance
X
Press the
Ù
button repeatedly until
Eco
Drive
is displayed in the input window.
X
With the
r
or
s
button, select the
Ä
or
Å
menu bar.
In the
Ä
menu bar, set the value by which
the stored speed may be exceeded. In the
Å
menu bar, set the value by which the
stored speed may be fallen short of.
i
To optimize consumption, PPC can affect
the speed tolerances:
R
by falling below the speed tolerance by a
few km/h
or
R
in the drive programs
A economy
and
A
fleet
, by briefly exceeding the speed tol-
erance by a maximum of 4 km/h
R
by briefly exceeding the speed tolerance in
all other drive programs by a maximum of
1 km/h
X
Press the
t
or
u
button to increase/
reduce speed tolerance in 1 km/h incre-
ments.
X
Press the
9
button to exit the input window.
or
X
Wait for approximately 3 seconds.
The setting is stored automatically.
Active Brake Assist
Important safety notes
The term, Active Brake Assist, used in the fol-
lowing sections applies to Active Brake Assist 4.
G
WARNING
Active Brake Assist with cross-traffic function
will initially brake your vehicle by a partial
application of the brakes if a danger of colli-
sion is detected. There may be a collision
unless you brake yourself. Even after subse-
quent full application of the brakes a collision
cannot always be avoided, particularly when
approaching at too high a speed. There is a
risk of an accident.
Always apply the brakes yourself and try to
take evasive action, provided it is safe to do
so.
G
WARNING
Active Brake Assist cannot always recognise
other road users and complex traffic condi-
tions.
In such cases, Active Brake Assist may:
R
give an unnecessary warning and then
brake the vehicle
R
neither give a warning nor intervene
There is a risk of an accident.
Continue to drive carefully and be prepared to
brake, particularly if Active Brake Assist
warns you.
G
WARNING
Active Brake Assist does not react to:
R
animals
R
oncoming vehicles
As a result, Active Brake Assist might not warn
you or intervene in these situations. There is a
risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
If Active Brake Assist detects the risk of a colli-
sion with the vehicle in front, it issues an audible
and visual warning. If you do not react and the
284
Driving systems
Driving mode
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