Mercedes-Benz GLC : Through-loading feature in the rear bench seat (EASY-PACK Quickfold) / Adjusting the angle of the rear seat backrests (cargo position)
To enlarge the cargo compartment, you can
adjust the seat backrests so that they are ten
degrees steeper (cargo position).

Fold the seat backrest
forwards.
Move bracket
in the direction of the
arrow.
Push seat backrest
back to bracket
until the backrest engages.
Requirements:
The left and center seat backrests are
engaged and joined together.
You can lock the center seat backrest release
catch if you want to secure the cargo compartment
against unauthorized access...
Other information:
WARNING Risk of injury or death due to
poorly secured objects
The cargo compartment cover alone cannot
secure or restrain heavy objects, items of
luggage or heavy loads.
You could be hit by an unsecured load, particularly
in the event of abrupt changes in
direction, sudden braking or an accident...
O..