Useful information
i
This Owner's Manual describes all models,
series and optional equipment for your vehi-
cle that were available at the time of going to
press. National variations are possible. Note
that your vehicle may not be equipped with all
of the functions described. This is also the
case for systems and functions relevant to
safety.
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Read the information on qualified specialist
workshops: (
Y
page 28).
Engine compartment
Bonnet
Important safety notes
G
WARNING
An unlocked bonnet may open up when the
vehicle is in motion and block your view. There
is a risk of an accident.
Never unlock the bonnet when driving. Before
every trip, ensure that the bonnet is locked.
G
WARNING
When being opened and closed, the bonnet
may suddenly fall into the closed position.
There is a risk of injury to persons in the range
of movement of the bonnet.
Open and close the bonnet only when nobody
is in the range of movement.
G
WARNING
If you open the bonnet while the engine is
overheating or while there is a fire in the
engine compartment, you could come into
contact with hot gases or other leaking ser-
vice products. There is a danger of injury.
Allow an overheating engine to cool down
before opening the bonnet. If there is a fire in
the engine compartment, leave the bonnet
closed and notify the fire brigade.
G
WARNING
There are moving components in the engine
compartment. Certain components may con-
tinue to move or suddenly move again even
after the ignition has been switched off, e.g.
the radiator fan. There is a risk of injury.
If you have to carry out work in the engine
compartment:
R
switch off the ignition
R
never touch the dangerous areas surround-
ing moving components, e.g. the rotation
area of the fan
R
remove jewellery and watches
R
keep items of clothing and hair, for exam-
ple, away from moving parts.
G
WARNING
The ignition system and the fuel injection sys-
tem operate with a high voltage. If you touch
the live components, you could receive an
electric shock. There is a danger of injury.
Never touch components of the ignition sys-
tem or the fuel injection system when the
ignition is switched on.
Active bonnet (pedestrian protection)
Operating principle
!
An active bonnet that had been triggered
must be repaired at a qualified specialist
workshop. The active bonnet function will
then be available again. The additional pedes-
trian protection provided by the active bonnet
will then be restored.
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The active bonnet is only available in certain
countries. It is available for all models, except
for the Mercedes-AMG GL 63.
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The active bonnet is only available in certain
countries. It is available for all models, except
for the Mercedes-AMG GLE 63.
The active bonnet can reduce the risk of injury to
pedestrians in certain accident situations. Rais-
ing the active bonnet increases the clearance to
hard components, such as the engine.
If the active bonnet has been triggered, it is
raised at the rear in the area around the hinge by
Engine compartment
373
Maint
enance
and
care
Z
