Status Indicator - Mercedes-Benz Unimog Operating Instructions Manual

Instrument cluster
114
Problem
The ; indicator
lamp lights up.
The engine power out-
put is reduced. The on-
board computer also
shows an event window
in the display.
The ; indicator
lamp lights up.
Vehicle speed is limited
to approx. 20 km/h.
Simultaneously, the on-
board computer shows
the · indicator
lamp in the status area.
Once the AdBlue
the system check does not detect any other faults, the ; indicator lamp goes out after the
system's status indicator. It may take several journeys to complete the system check.
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BlueTec exhaust gas aftertreatment

status indicator

The status of the BlueTec exhaust gas after-
treatment is signalled for a quick on-site
check by authorities.
There are three successive signalling phases
shown by the ; indicator lamp. These
commence when you have turned the key in
the ignition lock to position 2, and end when
the engine is started.
The first phase is the instrument cluster dis-
play check. The indicator lamp lights up for
approximately five seconds and then goes out
for approximately ten seconds.
Possible causes/consequences and M Solutions
You have not had a detected emissions-related malfunction rec-
tified.
X
Follow the instructions in the event window.
X
Drive carefully to the nearest qualified specialist workshop and
have the malfunction rectified as soon as possible.
If you do not follow the instructions in the event window, a speed
limitation may be imposed, as per the message displayed:
20 hours after the first occurrence of a malfunction, e.g. if a low-
R
grade diluted reducing agent is being used or if the dosage is
incorrect
100 hours after the first occurrence of a malfunction, e.g. if the
R
exhaust gas recirculation or if the monitoring system is faulty
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AdBlue has been used up or a detected emissions-related mal-
function has not been rectified.
X
Follow the instructions in the event message.
X
Drive carefully to the nearest filling station and refill AdBlue
( Y page 218).
or
X
Drive carefully to the nearest qualified specialist workshop and
have the malfunction rectified as soon as possible.
The operating permit is invalidated if you continue to use the vehi-
cle.
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tank has been refilled or the fault rectified, full engine output is restored. If
The second phase indicates the system check
status. The indicator lamp either lights up
again for five seconds or flashes for approx-
imately five seconds. Subsequently, it goes
out for five seconds.
In the third phase, the indicator lamp indi-
cates whether any emissions-related mal-
functions have been detected.
If no emissions-related malfunctions are
detected, the indicator lamp lights up briefly
and then goes out for approximately five sec-
onds. This flashing sequence is repeated until
the engine is started.
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