Securing a Top Tether
WARNING Risk of injury or death if the rear seat backrests are not locked after fitting Top Tether belts
The rear seat backrests may fold forwards when driving.
In this case, child restraint systems may no longer perform their intended protective function. Additional injuries may also be caused.
Always lock rear seat backrests after fitting Top Tether belts.
Pay attention to the lock verification indicator.
If the rear seat backrest is not engaged and locked in place, the red lock verification indicator will be visible.
If the child restraint system is equipped with a Top Tether belt:
The risk of injury can be reduced by a Top Tether. The Top Tether belt enables an additional connection between the child restraint system attached with ISOFIX or i‑Size and the vehicle.
Vehicles with adjustable head restraints:
If necessary, slide the head restraint upwards More.
Guide Top Tether belt 
under the head restraint between the two head restraint bars.
under the head restraint between the two head restraint bars. Vehicles without adjustable head restraints:
Top Tether belt with a seat belt strap: guide Top Tether belt over the centre of the head restraint.
over the centre of the head restraint. or
Top Tether belt with two seat belt straps: guide one Top Tether belt past the head restraint on the right and left side respectively.
past the head restraint on the right and left side respectively. All vehicles:
Fit the ISOFIX or i‑Size child restraint system with Top Tether. Comply with the child restraint system manufacturer's installation instructions.
Hook Top Tether hook 
into Top Tether anchorage 
without twisting.
into Top Tether anchorage without twisting. Tension Top Tether belt . Comply with the child restraint system manufacturer's installation instructions.
. Comply with the child restraint system manufacturer's installation instructions. Vehicles with adjustable head restraints:
If necessary, slide the head restraint downwards More. Make sure that you do not interfere with the correct routing of Top Tether belt .
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