Opel MOVANO Owner's Manual page 42

40 Seats, restraints
Lumbar support
Adjust lumbar support to suit personal
requirements.
Increasing and decreasing support:
turn the handwheel while relieving the
load on the backrest.
Suspension seat lumbar support
Adjust lumbar support to suit personal
requirements.
Operate hand pump repeatedly
(located on underside of unit) to
increase firmness.
Press release button (located at front
of unit) to decrease firmness.
Suspension seat sensitivity
Rotate knob to adjust the sensitivity of
the suspension seat.
Turn right = More stiff
Turn left = Less stiff