Mercedes-Benz Actros Operating Instructions Manual page 279

The on-board computer shows the status of
PPC by colour:
Grey symbol é: cruise control is deac-
R
tivated.
White symbol é with PPC: PPC is acti-
R
vated and cruise control is active.
Green symbol é with PPC: PPC actively
R
regulates the speed and gear selection in
cruise control or for the distance control
assistant.
PPC can be deactivated and activated using
the Systems menu window in the ä settings
menu ( Y page 162).
Speed tolerance in the driving sys-
tems
Overview
Example: display with PPC
Speed tolerance lets you determine the
extent to which the vehicle speed is allowed
to fall below/exceed the set speeds of vari-
ous driving systems.
Driving systems
Upper speed tolerance
The Ä upper speed tolerance helps to bet-
ter utilise momentum from downhill gradients
and thus save fuel. The upper speed tolerance
operates on the cruise control, distance con-
trol assistant and PPC driving systems.
For all drive programs except
A fleet, you can set the upper speed toler-
ance between 2 and 15 km/h. In the
omy A fleet
and drive programs, the setting
can only be adjusted to between 4 and
15 km/h. If you set the upper speed tolerance
to between 4 and 15 km/h, the value remains
saved even after you restart the engine.
The on-board computer shows the upper
speed tolerance next to the set speed. When
cruise control or distance control assistant is
activated, the speed limiter brakes the vehi-
cle by 4 km/h by applying the continuous
brake, regardless of the set speed tolerance.
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 fleet, you can set the upper speed toler-
ance between 0 and 10 km/h. In the
omy A fleet
and 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
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
277
A economy
and
A econ‐
A economy
and
A econ‐
Eco
Z