Opel Astra J 1.4 Turbo 2019 Owner's Manual page 9

Seat adjustment
Longitudinal adjustment
Pull handle, slide seat, release
handle. Try to move the seat back and
forth to ensure that the seat is locked
in place.
Seat position 3 32, Manual seat
adjustment 3 33.
Backrest inclination
Pull lever, adjust inclination and
release lever. Allow the seat to
engage audibly.
Seat position 3 32, Manual seat
adjustment 3 33.
In brief
Seat height
Lever pumping motion
up : seat higher
down : seat lower
Seat position 3 32, Manual seat
adjustment 3 33.
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