Engine Compartment - Mercedes-Benz C-Class Convertible 2021 Operator's Manual

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
interior air filter, engine air cleaner, engine oil
and oil filter etc. changed more frequently. The
tires must be checked more frequently if the
vehicle is operated under increased loads. Fur‐
ther information can be obtained at a qualified
specialist workshop.
Battery disconnection periods
The ASSYST PLUS service interval display can
calculate the service due date only when the
battery is connected.
Note down the service due date displayed on
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the instrument display before disconnecting
the battery ( page 316).
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Engine compartment

Opening and closing the hood
& WARNING Risk of accident due to driv‐
ing 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
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is a person in the hood's range of move‐
ment.
Maintenance and care 317
& WARNING Risk of burns when opening
the hood
If you open the hood when the engine has
overheated or when there is a fire in the
engine compartment, the following situations
may occur:
You could come into contact with hot
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gases.
You could come into contact with other
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hot, escaping operating fluids.
Before opening the hood, allow the
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overheated engine to cool down.
In the event of a fire in the engine com‐
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partment, keep the hood closed and
call the fire service.
& WARNING Risk of injury due to moving
parts
Components in the engine compartment may
continue running or start up suddenly, even if
the ignition is switched off.