Engine Compartment - Mercedes-Benz CLS Owner's Manual

fied based on the actual operating conditions
and/or loads.
Examples of arduous operating conditions:
regular city driving with frequent intermedi‐
R
ate stops
mainly short-distance driving
R
frequent operation in mountainous terrain or
R
on poor road surfaces
when the engine is often left idling for long
R
periods
operation in particularly dusty conditions
R
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
tyres 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 only calculate the service due date 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 292).
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Engine compartment

Active bonnet (pedestrian protection)
Operation of the active bonnet (pedestrian
protection)
In certain accident situations, the actuation of
the active bonnet reduces the risk of injury to
pedestrians. The rear area of the bonnet is
raised by approximately 85 mm.
For the drive to the workshop, reset the actuated
active bonnet yourself ( page 293).
/
After the active bonnet has been actuated,
pedestrian protection may be limited.
Have the full functionality of the active bonnet
restored in a qualified specialist workshop.
Maintenance and care 293
Resetting the active bonnet
& 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.
Allow the engine to cool down and only
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touch component parts described in
the following.