Opel COMBO Owner's Manual page 38

36 Seats, restraints
Seat height
Lever pumping motion
up = higher
down = lower
Operate lever and adjust body weight
on seat to raise or lower it.
Armrest
Raise or lower the armrest as
required.
Heating
Activate seat heating by pressing
button ß for the respective front seat
with the ignition on.
Activation is indicated by the LED in
the button.
Pressing button ß once more
deactivates seat heating.
Prolonged use for people with
sensitive skin is not recommended.