Mercedes-Benz A-Class 2021 Operator's Manual page 65

Set the front passenger seat as far back as
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possible and move the seat into the highest
position if possible.
Adjust the seat cushion inclination so that
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the front edge of the seat cushion is in the
highest position and the back edge of the
seat cushion is in the lowest position.
Set the seat backrest to the most vertical
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position possible.
Install the child restraint system.
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The entire base of the child restraint system
must always rest on the sitting surface of the
front passenger seat.
Always make sure that the shoulder belt
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strap is correctly routed from the seat belt
outlet of the vehicle to the shoulder belt
guide on the child restraint system.
The shoulder belt strap must be routed for‐
wards and downwards from the seat belt out‐
let.
If necessary, adjust the front passenger seat
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accordingly.
Child safety locks
Activating or deactivating the child safety
lock for the rear doors
& WARNING Risk of accident and injury
due to children left unattended in the
vehicle
If children are left unsupervised in the vehi‐
cle, they could, in particular:
Open doors, thereby endangering other
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persons or road users.
Get out and be struck by oncoming traf‐
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fic.
Operate vehicle equipment and become
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trapped, for example.
In addition, the children could also set the
vehicle in motion, for example by:
Releasing the parking brake.
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Changing the transmission position.
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Starting the vehicle.
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Occupant safety
Never leave children unattended in the
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vehicle.
When leaving the vehicle, always take
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the SmartKey with you and lock the
vehicle.
Keep the vehicle SmartKey out of reach
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of children.
& WARNING Danger to life due to expo‐
sure to extreme heat or cold in the vehi‐
cle
If people, particularly children, are exposed
to extreme temperatures over an extended
period of time, there is a risk of serious
injury or danger to life.
Never leave persons, children in partic‐
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ular, unattended in the vehicle.
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