Seats, restraints 471 = Only if front passenger seat airbag system is deactivated. If the child restraint system is being secured using a three-point seat belt, move seat height adjustment to uppermost position and ensure that vehicle safety belt runs forwardsfrom the upper anchorage point. Adjust seat backrest inclination as far as necessary to a vertical position to ensurethat the belt is tight on the buckle side.2 = Seat available with ISOFIX and Top-Tether mounting brackets 3 49.3 = Move the head restraint to uppermost position. If it interferes with the proper installation of the child restraint system,remove the headrest 3 33.U = Universal suitability in conjunction with three-point seat belt.X = No child restraint system permitted in this weight class.Permissible options for fitting an ISOFIX child restraint systemWeight class Size class Fixture On front passenger seat On rear outboard seats On rear centre seatGroup 0: up to 10 kg E ISO/R1 X IL1 XGroup 0+: up to 13 kg E ISO/R1 X IL1 XD ISO/R2 X IL1 XC ISO/R3 X IL1 XGroup I: 9 to 18 kg D ISO/R2 X IL1 XC ISO/R3 X IL1 XB ISO/F2 X IL, IUF XB1 ISO/F2X X IL, IUF XA ISO/F3 X IL, IUF X