Mercedes-Benz Actros 2017, Operating Instructions Manual

Page: 257 / 436

Drive programs and drive functions
Automatic
The transmission control shifts gears depending
on a number of factors including:
R
engine speed
R
accelerator pedal position
R
application of the continuous brake
R
load status of the vehicle
R
condition of the road surface
In addition, EcoRoll mode and crawler mode can
be deactivated and activated as drive functions
using the
Systems
menu window in the
ä
set-
tings menu (
Y
page 149).
On vehicles without a hydrodynamic clutch and
with the offroad gearshift program, the crawler
mode, which is specially suited for driving off-
road, can be activated or deactivated using the
í
button (
Y
page 257).
Automatic transmission with drive-spe-
cific gearshift program
Depending on the type of transmission and pro-
gramming, the gearshift program is either
designed for:
R
the performance-oriented dynamic driving
mode with higher engine speeds – power or
R
the driving mode that saves fuel – economy
or
R
the performance-oriented driving mode with
higher engine speeds for light off-road terrain
and building sites – offroad or
R
the performance-oriented dynamic driving
mode with higher engine speeds and a high
gross combination weight – heavy or
R
fleet mode – fleet or
R
refuse collection vehicle — municip or
R
the dynamic driving mode with optimal accel-
eration for emergency callouts and journeys
when sirens are used on fire engines – fire-sv
In the power, offroad, heavy and fire-sv gear-
shift programs, automatic control only shifts to
the next gear at higher engine speeds. EcoRoll
mode cannot be activated in these gearshift
programs.
In the
offroad gearshift program, the crawler
mode adapted for road use is deactivated. On
vehicles without a hydrodynamic clutch, the
specially adapted crawler mode for driving off-
road can be activated using the
í
button
(
Y
page 257). Crawler mode can be deactivated
and activated using the Systems menu window
in the
ä
settings menu (
Y
page 151).
In the heavy gearshift program, the transmis-
sion is not automatically shifted up when you
depress and hold the accelerator pedal over the
point of resistance (kickdown).
In the
economy gearshift program:
R
EcoRoll mode is always activated
R
the adjustable speed of cruise control is limi-
ted to 85 km/h
In the fleet gearshift program:
R
EcoRoll mode is always activated
R
the maximum speed is limited to approx-
imately 85 km/h
R
the automatic drive program is always active,
except in reverse gear
In the municip gearshift program:
R
the previously selected drive program is
always active after starting the engine
R
EcoRoll mode is deactivated
R
crawler mode is deactivated
R
the acoustic clutch overload warning is deac-
tivated
Manual drive program
In the manual drive program, the driver is
responsible for selecting gears. The gearshift
recommendation is shown in the status area of
the on-board computer.
In particularly difficult driving conditions, switch
to the manual driving program. This will enable
you to avoid any undesired interruptions to the
tractive power that may occur with automatic
gearshifting.
Automated transmission
255
Driving mode
Z