See also:

Activating HDC
Press the button; the LED above the button lights up. ...

Telephone
...

Manually adjustable seats
At a glance 1 Forward/backward 2 Thigh support 3 Seat tilt 4 Backrest width 5 Lumbar support 6 Height 7 Backrest tilt Forward/backward Forward/backward Pull the lever and slide the seat ...