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176 Maintenance and care
Information on regular maintenance work
* NOTE Premature wear through failure to
observe service due dates
Maintenance work which is not carried out at
the right time or incompletely can lead to
increased wear and damage to the vehicle.
Adhere to the prescribed service inter‐
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vals.
Always have the prescribed mainte‐
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nance work carried out at a qualified
specialist workshop.
Notes on special service requirements
The prescribed service interval is based on nor‐
mal vehicle use. Maintenance work will need to
be performed more often than prescribed if the
vehicle is operated under arduous operating con‐
ditions or increased loads.
Arduous operating conditions include:
Regular city driving with frequent intermedi‐
R
ate stops
Frequent short-distance driving
R
Frequent operation in mountainous terrain or
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on poor road surfaces
When the engine is often left idling for long
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periods
Operation in particularly dusty conditions
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and/or if air-recirculation mode is frequently
used
In these or similar operating conditions, have the
air filter, engine oil and oil filter, for example,
replaced more frequently.
If the vehicle is subjected to increased loads, the
tires must be checked more frequently. You can
obtain further information at a qualified specialist
workshop.
Non-operational times with the battery dis‐
connected
The ASSYST PLUS service interval display can
only calculate the service due date when the bat‐
tery is connected.
Display and note down the service due date
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on the instrument cluster before disconnect‐
ing the battery.
Displaying the service due date in vehi‐
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cles without steering wheel buttons
(
page 175).
/
Displaying the service due date in vehi‐
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cles with steering wheel buttons
(
page 175).
/
Engine compartment
Opening and closing the hood
& WARNING Risk of accident due to driving
with the hood unlocked
The hood may open and block your view.
Never release the hood when driving.
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Before every trip, ensure that the hood
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is locked.
& WARNING Risk of accident and injury
when opening and closing the hood
The hood may suddenly drop into the end
position.
There is a risk of injury for anyone in the
hood's range of movement.
Do not open or close the hood if there is
#
a person in the hood's range of move‐
ment.
& WARNING Risk of injury from touching
components under voltage
The ignition system and the fuel injection sys‐
tem work under high voltage. You could
receive an electric shock.
Never touch components of the ignition
#
system or the fuel injection system
when the ignition is switched on.
The following are examples of live components:
Ignition coils
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Spark plug connectors
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Injectors
R
& WARNING Risk of burns from hot com‐
ponent parts in the engine compartment
Certain component parts in the engine com‐
partment can be very hot, e.g. the engine, the
cooler and parts of the exhaust system.
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