Mercedes-Benz Unimog Operating Instructions Manual page 216

Driving tips
214
Automatic regeneration can begin either
while the vehicle is in motion or stationary.
Automatic regeneration only begins when all
operating conditions have been fulfilled, such
as sufficiently high engine oil and exhaust
temperatures, for example. If an operating
condition is no longer fulfilled while regener-
ation is in process, the É indicator lamp
goes out and the regeneration is interrupted.
When all operating conditions are fulfilled
again, the regeneration starts again automat-
ically. Avoid interrupting the journey as long
as the É indicator lamp is lit. Breaks in
your journey increase the required regenera-
tion time, which leads to increased fuel con-
sumption.
The engine noise and the engine idling
i
speed may change while regeneration is in
process.
During the first few regenerations in par-
ticular, smoke and noise generation can
occur in the area of the exhaust system.
Regeneration block
If you need to prevent the raised exhaust
temperatures which occur during regenera-
tion, you can block regeneration, e.g.:
when driving into a hazard area
R
when working with intense pollution of the
R
vehicle with dry or flammable materials
Automatic and manual regeneration can then
no longer be started and any current regen-
eration will be interrupted.
X
To switch on/off: press button ;.
If indicator lamp : in the button lights up,
regeneration is blocked.
Only switch on the regeneration block for the
duration of the hazardous condition. If you
have switched on the regeneration block,
regeneration remains disabled even after
starting the engine again. This can result in a
large number of particles quickly collecting in
the diesel particle filter. In this case, the on-
board computer informs you that the regen-
eration block is still active by means of the
ÂRegeneration disabled
grey event window.
Starting stationary manual regenera-
tion
Start manual regeneration when the on-board
computer has prompted you to do so with
corresponding event windows (
In special cases and for official vehicles, man-
ual regeneration can be initiated earlier for
preventative particle filter regeneration. Man-
ual regeneration lasts approximately
30 minutes up to a maximum of 60 minutes.
X
Make sure the regeneration block is
switched off ( Y page 214).
X
Stop the vehicle, paying attention to road
and traffic conditions, and keep the engine
running.
While doing so, maintain a distance of at
least one metre to other vehicles, other
objects and all flammable materials.
X
Apply the parking brake.
message in a
Y
page 131).