Mercedes-Benz A-Class Operator's Manual page 55

As a result, child restraint systems cannot
perform their intended protective function.
Rear seat backrests that are not locked can
also cause additional injuries, e.g. in the
event of an accident.
Always lock rear seat backrests after
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installing Top Tether belts.
Observe the lock verification indicator.
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If the rear seat backrest is not engaged and
locked, the red lock verification indicator will be
visible.
The risk of injury can be reduced by Top Tether.
The Top Tether belt facilitates an additional con‐
nection between the child restraint system
attached with LATCH-type (ISOFIX) and the vehi‐
cle.
The child restraint system must be equipped
with a Top Tether belt.
Vehicles with adjustable head restraints:
If necessary, move the head restraint
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upwards ( page 83).
→
Occupant safety
Route Top Tether belt 3 under the head
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restraint between the two head restraint
bars.
Vehicles without adjustable head restraints:
Top Tether belt with a seat belt strap: guide
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Top Tether belt 3 over the center of the
head restraint.
or
Top Tether belt with two seat belt straps:
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guide each Top Tether belt 3 to the right
and left side of the head restraint.
All vehicles
Install the LATCH-type (ISOFIX) child restraint
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system with Top Tether. Always comply with
the child restraint system manufacturer's
installation instructions when doing so.
Hook Top Tether hook 2 into Top Tether
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anchorage 1 without twisting.
Tension Top Tether belt 3. Always comply
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with the child restraint system manufactur‐
er's installation instructions when doing so.
Vehicles with adjustable head restraints:
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