CITROËN DS 4 Handbook page 162

Locations for ISOFIX child seats
In accordance with European Regulations, this table indicates the options for installing ISOFIX child seats on seats in the vehicle fitted with ISOFIX
mountings.
In the case of universal and semi-universal ISOFIX child seats, the ISOFIX size category, determined by a letter from A to G, is indicated on the child
seat next to the ISOFIX logo.
Type of ISOFIX child seat
ISOFIX size category
ISOFIX child seats universal and semi-universal
which can be installed on the rear outer seats
IUF: seat suitable for the installation of an Isofix Universal seat, "Forward facing" secured using the upper strap.
IL-SU: seat suitable for the installation of an Isofix Semi-Universal seat either:
- rearward facing fitted with an upper strap or a support leg,
- forward facing fitted with a support leg,
- an infant car seat fitted with an upper strap or a support leg.
For advice on securing of the upper strap, refer to the "ISOFIX mountings" section.
* Infant car seats and "car cots" cannot be installed on the front passenger seat.
** The ISOFIX infant car seat, secured on the lower rings of a vehicle ISOFIX seat, occupies two rear seats.
Less than 10 kg
Less than 10 kg
(group 0)
(group 0)
Less than 13 kg
Up to approx.
(group 0+)
6 months
Up to approx. 1 year
Infant car seat* rearward facing
F G C
IL-SU**
Weight of the child/indicative age
From 9 to 18 kg (group 1)
rearward facing
d E C
IL-SU IL-SU
Remove and stow the head restraint
before installing a child seat with a
backrest on a passenger seat. Refit the
head restraint once the child seat has
been removed.
From approx. 1 to 3 years
forward facing
d A B
IUF
IL-SU
B1