Example: condensation sensor on the
compressed-air reservoir (compressed-air reser-
voir on the chassis, inner side)
Vehicles with a condensation sensor: if the
condensation level in the compressed-air res-
ervoir is too high, this is displayed by the yel-
low
Condensation in compressed-air
Condensation in compressed-air
reservoir
reservoir
event window. In this case, have
the compressed-air brake system checked at a
qualified specialist workshop. If your vehicle is
equipped with a condensation sensor, the fol-
lowing check is not applicable.
Example: condensed water valve on the
compressed-air reservoir (compressed-air reser-
voir on the chassis, inner side)
Vehicles without a condensation sensor are
equipped with condensation valve
:
on the
compressed-air reservoir.
X
Start the engine.
X
Check the reservoir pressure in the
compressed-air brake system.
X
If the on-board computer displays the red
Brake supply pressure in circuit 1
Brake supply pressure in circuit 1
too low
too low
and/or
Brake supply pressure
Brake supply pressure
in circuit 2 too low
in circuit 2 too low
event window,
leave the engine running until the red event
window goes out.
The compressed-air system is charged.
X
Switch off the engine.
X
Pull ring
;
on condensation valve
:
and
drain off the condensation.
X
If a large amount of condensation runs out,
have the compressed-air brake system
checked at a qualified specialist workshop.
Checking the vehicle height
G
WARNING
When you drive with the chassis lowered or
raised, the vehicle's braking and driving
characteristics can be significantly impaired.
You could also exceed the permissible vehi-
cle height if the chassis is raised. There is a
risk of an accident.
Adjust the vehicle level before pulling away.
X
Vehicles with level control: set the driving
level (
Y
page 142).
The
¸
indicator lamp in the instrument
cluster goes out.
Pulling away
!
Do not pull away during the first engine
rotations. After starting the engine, allow it
to run in idle for a short time, until sufficient
oil pressure has been attained. Do not run
the cold engine at high engine speeds .
In this way, you will avoid increased wear
and possible engine damage.
You should pay special attention to road con-
ditions when temperatures are around the
freezing point.
There is a delay in displaying a change in out-
side temperature.
If the brake system is defective, braking
behaviour may change or the brake system
may fail. If you notice a reduction in braking
power when testing the brakes, stop the vehi-
cle as soon as possible while paying attention
to traffic conditions. Have the brake system
checked and repaired at a qualified specialist
workshop.
If you ignore warning lamps and messages in
the display, you will not recognise failures and
faults affecting the brake system components
and systems. Braking behaviour may change.
The pedal travel and pedal force required to
brake the vehicle may increase. Have the
106
Driving
Dr
ivi
ng
mo
de
Summary of Contents for EconicSD
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