i
The starting procedure is automatically
canceled after approximately 60 seconds.
X
If the engine fails to start:rectify the cause
of the poor starting characteristics.
Possible causes of poor starting characteris-
tics are, for example:
R
ablocked fuel filter
R
an empty fuel tank (Y page 151)
R
fuel system not bled (Y page 176)
X
Repeat the starting procedure.
X
If the engine still fails to start,contact a
qualified specialist workshop.
Safety inspection
Checking the reservoir pressureinthe
compressed-air brake system
G
WARNING
It is not possible to brake the vehicle if the
compressed-air brake system has aleak or
if there is insufficientreservoir pressure.
There is arisk of an accident.
Do not pull away until the required reservoir
pressures have been reached.
In the event of loss of pressure while driving,
immediately bring the vehicle to ahalt in
accordancewith the traffic conditions.
Secure the vehicle using the parking brake.
Have the compressed-air system repaired at
aqualified specialist workshop.
X
Start the engine.
X
Leave the engine runninguntil the J
warning lamp in the instrument cluster goes
out.
X
Call up the Reserve pressureReserve pressure menu win-
dow (Y page 80) and check the current res-
ervoir pressure.
Observe the event window in the on-board
computer and the indicator lamps in the status
area of the on-board computer/instrument
cluster for the reservoir pressure and the
compressed-air brake system.
Checking the reservoir pressureinthe
transmission/clutch circuit
G
WARNING
If there is aloss of pressure or insufficient
reservoir pressure in the transmission/
clutch circuit, you can no longer shift gears.
There is arisk of an accident.
Do not pull away,orstop the vehicle as soon
as possible, paying attention to road and
traffic conditions. Secure the vehicle against
rolling away,e.g. with the parking brake.
Have the compressed-air system repaired at
aqualified specialist workshop.
The reservoir pressure in the transmission/
clutch circuit is supplied once brake circuits 1
and 2have been charged.
If the reservoir pressure in the transmission/
clutch circuit is too low, the on-board com-
puter will display the yellow : Transmis‐Transmis‐
sion/clutch reserve pressure too lowsion/clutch reserve pressure too low
event window.
X
Start the engine.
X
Leave the engine runninguntil the yel-
low :Transmission/clutch reserveTransmission/clutch reserve
pressure too lowpressure too low event window in the on-
board computer goes out.
Checking the function of the
compressed-air dryer
G
WARNING
If the condensation level in the compressed-
air reservoir is too high, the braking effect
could be reduced or the compressed-air
brake system could fail. There is arisk of an
accident.
Before starting ajourney check the
compressed-air system for condensation. If
the condensation level is high, have the
compressed-air brake system checked as
soon as possible at aqualified specialist
workshop.
Driving
105
Driving mode
Z
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