Opel CASCADA Owner's Manual page 49

Seat adjustment
9 Danger
Do not sit nearer than 25 cm from
the steering wheel, to permit safe
airbag deployment.
9 Warning
Never adjust seats while driving as
they could move uncontrollably.
Drive only with engaged seats and
backrests.
Seat lengthwise adjustment
Pull handle, slide seat, release
handle.
Seats, restraints
Seat backrest
Turn lever to the rear, adjust
inclination and release lever. Allow
the backrest to engage audibly.
47