Opel CASCADA Owner's Manual page 56

54 Seats, restraints
Move switch upwards/downwards.
Seat inclination
Move front of switch upwards/
downwards.
Seat backrests
Turn switch forwards/backwards.
Lumbar support
Adjust lumbar support using the four-
way switch to suit personal
requirements.
Moving support up and down: push
switch up or down.
Increasing and decreasing support:
push switch forwards or backwards.
Note
If the seat setting is electrically
overloaded, the power supply is
automatically cut-off for a short time.
Adjustable thigh support
Pull the lever and slide the thigh
support.