Volvo 2009 XC90 Owner's Manual page 38

01 Safety
Infant seats
01
Pull out the shoulder section of the seat belt
4. Pull the shoulder section of the seat belt
out as far as possible to activate the belt's
automatic locking function.
38
Ensure that the seat is securely in place
NOTE
The locking retractor will automatically
release when the seat belt is unbuckled and
allowed to retract fully.
5. Press the infant seat firmly in place, let the
seat belt retract and pull it taut. A sound
from the seat belt retractor's automatic
locking function will be audible at this time
and is normal. The seat belt should now be
locked in place.
6. Push and pull the infant seat to ensure that
it is held securely in place by the seat belt.
WARNING
It should not be possible to move the child
restraint more than 1 in. (2.5 cm) in any
direction.
The infant seat can be removed by unbuckling
the seat belt and letting it retract completely.