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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, air filter, engine oil and oil filter,
for example, changed more frequently. The tyres
must be checked more frequently if the vehicle
is operated under increased loads. Further infor‐
mation 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
#
the instrument display before disconnecting
the battery (
page 310).
/
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 80 mm.
After being triggered, the active bonnet remains
in the raised position. Limited visibility due to
the raised bonnet cannot be ruled out.
After the active bonnet has been actuated,
pedestrian protection may be limited.
Have the full functionality of the active bonnet
restored immediately in a qualified specialist
workshop.
If necessary, adjust your seat position and drive
carefully to a qualified specialist workshop. If a
safe continued journey is not possible, contact a
qualified specialist workshop.
Maintenance and care 311
Opening and closing the bonnet
& WARNING Risk of accident due to driv‐
ing with the bonnet unlocked
The bonnet may open and block your view.
Never release the bonnet when driving.
#
Before every trip, ensure that the
#
engine bonnet is locked.
& WARNING Risk of accident and injury
when opening and closing the bonnet
The bonnet may suddenly drop into the end
position.
There is a risk of injury for anyone in the
engine bonnet's range of movement.
Do not open or close the bonnet if there
#
is a person in the bonnet's range of
movement.
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