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320 Maintenance and care
Notes on washing the engine
* NOTE Damage and malfunctions due to
washing the engine
Observe the following points to prevent
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engine damage and malfunctions:
when using high-pressure or steam
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cleaners, do not point the water jet
directly at electrical components
and the end of electric cables.
make sure that no water enters the
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air-intake, vent and ventilation open‐
ings.
treat the engine with preservation
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agents after it has been washed.
protect the belt drive from preserva‐
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tion agents.
Only use waxes specified in Sheet Number 385.4
of the Mercedes-Benz Specification for Operating
Fluids.
* NOTE Damage to the high-voltage igni‐
tion system of vehicles with a natural gas
engine
If the high-voltage ignition system is exposed
to the direct action of the water jet during
engine washing, it can be damaged.
Do not point the water jet directly
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towards the high-voltage ignition sys‐
tem.
Additionally pay attention to the "Notes on using
a high-pressure cleaner" section (
Maintenance
Notes on the maintenance system
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ENVIRONMENTAL NOTE Environmental
pollution due to disposal in a non-envi‐
ronmentally-friendly manner
If due to operating reasons, you need to per‐
form maintenance work yourself, ensure you
observe environmental protection require‐
ments. When disposing of operating fluids,
e.g. engine oil, you must comply with the
legal requirements. This also applies to all
parts, e.g. filters, that have been in contact
with operating fluids.
Dispose of empty containers, cleaning
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cloths and care products in an environ‐
mentally responsible manner.
Observe the instructions for care prod‐
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ucts.
Do not let the engine run longer than
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necessary when stationary.
The following settings can be made in the multi‐
media system in the menu
menu item Maintenance:
fuel grade
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resetting the values of the fluid coupling
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the state of the diesel particulate filter
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Like all technical equipment, the vehicle requires
care and maintenance. The scope and frequency
of maintenance work mainly depend on the oper‐
ating conditions, which can differ widely.
You must secure the vehicle on jack stands of
sufficient load capacity if work is being carried
out underneath the vehicle. Never use the jack
instead of stands. The jack could slip and the
vehicle could drop. The jack is designed only to
raise the vehicle for a short time, e.g. while a
wheel is being changed.
When working on the vehicle, comply with all
safety regulations, such as the operating instruc‐
tions, regulations concerning hazardous materi‐
als, environmental protection measures, work
safety and accident prevention regulations.
Inspection and maintenance work requires spe‐
cial skills that cannot be acquired by reading
/
page 314).
these Operating Instructions. Always have this
work and maintenance work carried out by a
qualified specialist workshop.
The filter elements of the air filter must not be
cleaned. Tapping, blowing or washing out the fil‐
ter medium could lead to structural changes and
damage. in this case, the required separation effi‐
ciency of the filter element can no longer be
guaranteed. this may lead to increased wear and
a reduced engine service life. Renew the air filter
elements, otherwise the implied warranty is inva‐
lidated and the engine could be damaged.
The maintenance system calculates maintenance
due dates for the vehicle and its major assem‐
blies based on the vehicle's operating conditions.
You can call up the maintenance due dates calcu‐
lated for the vehicle and its major assemblies in
the on-board computer .
Status
under the
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