Mercedes-Benz Actros 2017, Руководство по эксплуатации

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X When loading or unloading the vehicle, lower
the leading/trailing axle.
X
To raise/lower: press the
â
button.
When the leading/trailing axle is raised, the
¡
(trailing axle) or
}
(leading axle) indi-
cator lamp lights up yellow in the status area
of the on-board computer.
Vehicles with four air-sprung axles: the trailing
axle lowers automatically when you apply the
parking brake. As a result, braking performance
is increased. As the vehicle briefly lowers, the
yellow
!
indicator lamp flashes in the instru-
ment cluster.
If the trailing axle has not lowered, the yel-
low
!
indicator lamp flashes continuously
when the ignition has been switched on. After
the key has been removed from the ignition, the
yellow
!
indicator lamp flashes for another
ten minutes and then goes out.
If the trailing axle has not lowered, secure the
vehicle in particular against rolling away. Have
the trailing axle checked immediately at a quali-
fied specialist workshop.
Steerable additional axle
! When manoeuvring close to kerbstones or
when travelling through narrow passages,
there is a risk of tyre damage. In such cases,
centre the steering of the additional axle.
The electro-hydraulically controlled additional
axle steers in accordance with the angle of the
steering wheel when driving forwards and
reversing. This active steering reduces tyre
wear. A steerable trailing axle also reduces the
turning circle of the vehicle.
In extreme driving conditions, e.g. when braking
hard on a slippery or uneven road surface, the
steerable additional axle may deactivate itself. It
will then only steer passively. After the engine is
restarted, the steering function of the additional
axle is re-activated automatically.
X Start the engine.
X To centre manually: press the upper section
of the
Õ
button.
The steering of the additional axle is centred.
The wheels on the additional axle move to the
straight-ahead position. When the
Õ
indi-
cator lamp lights up in the status area of the
on-board computer, the additional axle is cen-
tred.
X
To unlock a steering function: press the
upper section of the
Õ
button again.
When the
Õ
indicator lamp in the status
area of the on-board computer goes out, the
steering function of the additional axle is acti-
vated. The additional axle again steers
actively.
If the steerable additional axle is malfunctioning
or no longer steers actively:
R
The
D
indicator lamp in the status area of
the on-board computer lights up.
R
The on-board computer displays a corre-
sponding event window.
When the
{
indicator lamp lights up grey in
the status area of the on-board computer, the
difference in the steering angle between the
fully locked front axle wheels and the steerable
additional axle is too great. The vehicle was
parked with the steering at full lock, for exam-
ple. The steerable additional axle will not steer
actively.
X
Turn the multifunction steering wheel to the
left and the right as far as it will go.
The steerable additional axle is picked up by
turning the steering wheel. The additional axle
again steers actively. The
{
indicator lamp
in the status area of the on-board computer
goes out.
or
X
Pull away slowly.
The additional axle again steers actively. The
{
indicator lamp in the status area of the
on-board computer goes out.
Information on raising and lowering a height-
adjustable additional axle can be found in "Lead-
ing/trailing axles" (
Y
page 300).
Additional axles
301
Driving mode
Z