Mercedes-Benz C-Class Convertible 2021 Operator's Manual page 61

Fold the rear seat backrest forward.
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Attach Top Tether hook 2 to Top Tether
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anchorage 1.
Fold the rear seat backrest back.
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Make sure that Top Tether belt 3
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twisted and the rear seat backrest is locked
in place.
Secure the child restraint system with
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LATCH-type (ISOFIX).
Tension Top Tether belt 3 from the trunk.
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Make sure that there is sufficient seat belt
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strap for pulling tight.
It is essential to comply with the child
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restraint system manufacturer's installation
instructions.
Securing the child restraint system with the
seat belt
Securing the child restraint system with the
seat belt on the rear seat
& WARNING Risk of accident if the rear
bench seat, rear seat and seat backrest
are not engaged
The rear bench seat, rear seat and seat back‐
rest may fold forwards, even when you are
is not
driving.
As a result, the vehicle occupant will be
R
pushed into the seat belt with increased
force. The seat belt will not be able to
protect as intended and could cause
additional injury.
Objects or loads in the trunk or cargo
R
compartment will not be restrained by
the seat backrest.
Occupant safety
Make sure that the rear bench seat, the
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rear seat and the seat backrest are
engaged before every trip.
If the left and right seat backrests are not
engaged and locked in place, this will be shown
on the multifunction display on the instrument
cluster.
When installing a belt-secured child
restraint system, observe the following:
O Always comply with the manufacturer's
installation and operating instructions for
the child restraint system used.
O When using a weight category 0/0+
baby car seat and a weight category I
rearward-facing child restraint system
on a rear seat: adjust the front seat so that
the seat does not touch the child restraint
system.
O When using a weight category I forward-
facing child restraint system: remove the
head restraint from the respective seat, if
possible.
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