Volvo XC 90 EXCELLENCE 2018 Owner's Manual Supplement page 5

ADJUSTING THE REAR SEAT
The car's rear seats have different setting options for optimum seating
comfort.
Adjust the backrest rake by adjusting the control forward/backward.
Raise/lower the seat by means of adjusting the rear section of the
control up/down. Move the seat forward/backward by adjusting the
control forward/backward.
Raise/lower the seat cushion front edge by means of adjusting the
front section of the control up/down.
Settings for massage, side support, lumbar support and seat cushion
extension are linked to the multi-function control.
Only one movement (forward/back/up/down) can be made at a time.
The seat can be adjusted for a period of time after unlocking the door
without the car running. Seat adjustment can always be performed
when the car is running. Adjustment can also be performed for a
period of time after the car has been switched off.
The seats have overload protection which is triggered if a seat is
blocked by an object. If this happens, remove the object and then
operate the seat again.
To adjust the sleeping/comfort position, it may be necessary to first
move the seat forward slightly.