Mercedes-Benz C-Class Coupe 2019 Operator's Manual page 105

Fold seat backrest 2 forwards.
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If necessary, reset the driver's or front
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passenger seat.
Folding the rear seat backrest back
* NOTE Damage to the seat belt
The seat belt could become trapped and thus
damaged when folding back the seat back‐
rest.
Make sure that the seat belt is not trap‐
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ped when folding back the seat back‐
rest.
Move the driver's or front passenger seat for‐
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wards, if necessary.
Fold the corresponding seat backrest
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back until it engages.
Left and right seat backrests: if the seat
backrest is not engaged and locked, this will
be shown on the multifunction display on the
instrument cluster.
A warning tone also sounds.
Center seat backrest: if the seat backrest is
not engaged and locked, red lock verification
indicator 2 will be visible.
Locking the release catch of the center rear
seat backrest
Requirements:
The left and center seat backrests are
R
engaged and joined together.
You can lock the center seat backrest release
catch if you want to secure the trunk against
unauthorized access. The center seat backrest
can then be folded forwards only together with
the left seat backrest.
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Seats and stowing 103