For ISOFIX or i‑Size child restraint systems in which the child is secured using the seat belt integrated in the child restraint system, the permissible gross mass of the child and child restraint system is 33 kg.
If the child and the child restraint system together weigh more than 33 kg, the ISOFIX or i‑Size child restraint system with integrated seat belt does not offer sufficient protection. Too much load may be placed on the ISOFIX or i ‑Size child restraint systems and the child may not be restrained correctly in the event of an accident, for example.
in the manufacturer's installation and operating instructions for the child restraint system used
on a label on the child restraint system, if present
Regularly check that the permissible gross mass of the child and child restraint system is still complied with.
Always observe the correct use of the seats and consider their suitability for attaching a child restraint system. ISOFIX child seat securing system More i‑Size child seat securing system More- Be sure to observe the installation and operating instructions provided by the manufacturer for the child restraint system being used.
When fitting an ISOFIX child restraint system, also observe the following: - For certain child restraint systems in weight categories II or III, the maximum size setting may be restricted, for instance due to possible contact with the roof.
- The child restraint system must not be put under strain between the roof and the seat cushion and/or be fitted facing the wrong direction.
Before every journey, make sure that the ISOFIX child restraint system or the i‑Size child restraint system is engaged correctly in both mounting brackets in the vehicle.