Mercedes-Benz A-Class Owner's Manual page 304

With your hand flat, push down active bonnet
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1 in the area around the hinges on both
sides (arrows).
In doing so, the actuator is depressurised
and you may hear a hissing sound.
The engine bonnet must engage in position.
If the active bonnet can be raised slightly at
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the rear in the area of the hinges, repeat the
step until it engages correctly.
Opening/closing the bonnet
& WARNING Risk of accident due to driv‐
ing with the engine bonnet unlocked
An unlocked engine bonnet may open up
when the vehicle is in motion and block your
view.
Never unlock the engine bonnet when
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driving.
Before every trip, ensure that the
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engine bonnet is locked.
& WARNING Risk of accident and injury
when opening and closing the engine
bonnet
When opening or closing the engine bonnet,
it may suddenly drop into the end position.
There is a risk of injury for anyone in the
engine bonnet's range of movement.
Only open or close the engine bonnet
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when there are no persons in the
engine bonnet's range of movement.
Maintenance and care 301
& WARNING Danger of burns when open‐
ing the bonnet
If you open the engine bonnet when the
engine has overheated or during a fire in the
engine compartment, you could come into
contact with hot gases or other escaping
operating fluids.
Before opening the bonnet, allow the
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engine to cool down.
In the event of a fire in the engine com‐
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partment, keep the engine bonnet
closed and call the fire service.
& WARNING Risk of injury due to moving
parts
Certain components in the engine compart‐
ment may continue to move or suddenly
move again even after the ignition has been
switched off, e.g. the cooler fan.
Make sure of the following before performing
tasks in the engine compartment:
Switch the ignition off.
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